- Find the Ideal Mechanical Advantage of an inclined plane wit length of 16 feet and a height of 4 feet
Answers
The ideal mechanical advantage (IMA) of an inclined plane with a length of 16 feet and a height of 4 feet is 4:1.
An inclined plane allows us to exert a smaller force over a longer distance, making it easier to move objects along the slope. The IMA is determined by dividing the length of the inclined plane by its vertical height. In this case, the length is 16 feet and the height is 4 feet, resulting in an IMA of 4. This means that for every 1 unit of vertical height, the object will move a distance of 4 units along the inclined plane. It demonstrates the mechanical advantage gained by utilizing the inclined plane to reduce the effort required to move objects. However, factors like friction can reduce the actual mechanical advantage in practical situations.
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Related Questions
Many smoke detectors use americium-241to detect very small particulates in the air. This is done by using a stream of radioactive particles that can be stopped by the small smoke particulate. Which type of radiation is MOST LIKELY used in a smoke detector, as it can be stopped by something this small?
a
neutrons
b
beta particles
c
alpha particles
d
gamma radiation
Answers
Answer: C.) Alpha Particles
Explanation: Just took it <3
which detection method or methods measure the gravitational tug of a planet on its star, allowing us to estimate planetary mass? (a) the transit method only (b) the doppler method only (c) the astrometric and doppler methods
Answers
Detection methods to measure the gravitational tug of a planet on its star that is allowing us to estimate planetary mass is : (c) the astrometric and doppler methods.
Method for finding extrasolar planets and brown dwarfs from radial-velocity measurements through observation of doppler shifts in the spectrum of the planet's parent star is called doppler spectroscopy.
It is also known as the radial-velocity method or the wobble method.
Method that detects the motion of a star by making precise measurements of its position on the sky is called astrometry. This technique can be used to identify the planets around a star by measuring small changes in the position of the stars.
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a spring has a relaxed length of 4 cm and a stiffness of 50 n/m. how much work must you do to change its length from 6 cm to 10 cm
Answers
The 0.1 joules of work must be done to change the length of the spring from 6 cm to 10 cm.
Using Hooke's Law, F = kx, where F is the force required, k is the stiffness of the spring (50 N/m), and x is the displacement.
At 6 cm, the displacement is 2 cm (6 cm - 4 cm), so force required is \(F = (50 N/m) * (0.02 m) = 1 N.\)
At 10 cm, the displacement is 6 cm (10 cm - 4 cm), so force required is \(F = (50 N/m) * (0.06 m) = 3 N.\)
To find work done, we use formula W = Fd, where W is work done, F is the force applied, and d is the displacement.
So, the work done to change the length of spring from 6 cm to 10 cm is \(W = (1 N + 3 N) / 2 * (0.06 m - 0.02 m) = 0.1 J\).
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If Europium (Eu) undergoes proton decay and loses 3 protons, which element will it become?
Answers
Answer:
Neodymium (Nd)
Explanation:
An element is made up of atom, which contains three subatomic particles namely; proton, electron, and neutron. In a neutral atom, the number of protons determines the atomic number of that element and the atomic number of an element is the identity of that element in the periodic table.
Hence, a change in the proton number of an element means a change in the atomic number and ultimately a change of that element. In this question, Europium (Eu) element with atomic number, 63, loses three protons. This means that that atom now has 60 protons, which denotes the atomic number of another element called Neodymium (Nd).
Therefore, Europium (Eu) element has become Neodymium (Nd) due to loss of protons.
Two billiard balls, each with a mass of 0.17 kg, collide with each other on a
pool table. Before the collision, one ball is moving south at 2.8 m/s and the
other ball is moving north at 1.6 m/s. What is the momentum of this system
after the collision?
A. 0.60 kg-m/s south
B. 0.20 kg-m/s south
C. 0.20 kg.m/s north
D. 0.60 kg.m/s north
Answers
The momentum of the system after the Collison have been obtained as 0.20 kg-m/s south.
What is the momentum?According to the principle of the conservation of linear momentum, we know that the momentum before collision is equal to the momentum after collision.
In this case, we can see that the two ball are moving in the opposite direction thus the velocity vectors are directed in opposite directions. We would now try to be able to obtain the momentum of the system after the Collison as;
Momentum of the ball moving south - Momentum of the ball moving north
Thus;
0.17 kg(2.8 m/s - 1.6 m/s)
Total momentum of the system =
0.20 kg-m/s south
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Two scientists decide to investigate the rate at which objects fall on different planets. They choose to use Earth and Mars as case studies. One scientist stays on Earth and the second goes to Mars. Each of them released a 2kg piece of stone at a height of 15 metres from the surface of the planet at exactly the same time. On which planet will the stone hit the ground first? Why do you think so?
Answers
Answer:
the stones are released from rest at the same time, the stone that is on Earth to have more acceleration must first reach the ground
Explanation:
For this exercise we will use the law of universal attraction on each planet and Newton's second law to calculate the body's acceleration on each planet
F = ma
F = G m M / r²
Where G is the universal gravitational constant, m the mass of the body, M the mass of the planet and r the distance
Let's start with the Earth
G m M / r² = m a
a = G M / r²
let's look for the distance
r = \(R_{e}\) + h
a = G M / (R_{e} + h)² = (G M /R_{e}²) 1 /(1 + h /R_{e})² ²
as h << R_{e} we can expand this function
(1 + h /R_{e})⁻² = 1 -2 h / Re + ...
with h /R_{e} it is very small we can despise it
a = G M /R_{e}
the amount in parentheses is called the acceleration due to gravity
g = G M / R_{e}²
g = 6.67 10⁻¹¹ 5.98 10²⁴ / (6.37 10⁶)²
g = 9.8 m / s ²
Now let's calculate the acceleration on Mars, let's use index 2 for this planet
a = G M2 / R_{2}²
a = 6.67 10⁻¹¹ 6.42 10²³ / (3.37 10⁶)
a = 3.77 m / s²
Let's analyze these results as the stones are released from rest at the same time, the stone that is on Earth to have more acceleration must first reach the ground
we can use the equation
y = v₀ t - ½ to t2
v₀ = 0
t = √ (2y / a)
we see that as the acceleration is greater the time decreases
Keeping the ending level at 2, try different starting orbits.What happens to the wavelength of the photon when the difference is small?When it is large?
Answers
When the difference is small, that is the starting orbit is just one level above the ending orbit, the wavelength of the photon will have a relatively small value.
Atomic emission is the process of light emission from an atom that occurs when the atom gets excited by either heating, bombarding with electrons, or a discharge of electric current. When an atom is excited, the electrons gain energy and move to a higher energy level or shell. When they return to the lower energy state, they emit energy in the form of electromagnetic radiation or light.
The energy of the emitted photon or light is directly proportional to the difference in the energy levels of the atom before and after the emission process. The relationship is given by:E=hfwhere E is the energy of the emitted photon, h is the Planck's constant, and f is the frequency of the emitted photon. The frequency of the emitted photon can be calculated using the formula:f=c/λwhere c is the speed of light and λ is the wavelength of the photon.
Thus, for an atom to emit radiation of a particular wavelength, the difference in energy levels of the atom must correspond to that wavelength. If the difference is small, the wavelength of the emitted photon will also be small, and if the difference is large, the wavelength of the emitted photon will be large.
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A galvanometer has an internal resistance of (RG-59), and a maximum deflection current of IGMax = 15 mA). If the shunt resistance is given by : Max RS (16) mar RG I max - (16) max Then the value of the shunt resistance Rs (in) needed to convert it into an ammeter reading maximum value of 'Max = 500 mA is:
Answers
The value of the shunt resistance Rs is calculated to be approximately (1.02 Ω).To convert a galvanometer into an ammeter with a maximum reading value of 500 mA, a shunt resistance (Rs) needs to be added.
The value of the shunt resistance can be calculated using the formula Rs = (RG * IMax) / (IMax - Max), where RG is the internal resistance of the galvanometer, IMax is the maximum deflection current of the galvanometer (15 mA), and Max is the desired maximum current reading of the ammeter (500 mA).
To convert a galvanometer into an ammeter, a shunt resistance is connected in parallel with the galvanometer.
The shunt resistance diverts a portion of the current, allowing the remaining current to flow through the galvanometer.
By choosing an appropriate value for the shunt resistance, the ammeter can be calibrated to measure higher currents.
In this case, the shunt resistance value (Rs) can be determined using the formula Rs = (RG * IMax) / (IMax - Max), where RG is the internal resistance of the galvanometer, IMax is the maximum deflection current of the galvanometer (15 mA), and Max is the desired maximum current reading of the ammeter (500 mA).
Substituting the given values,
we have Rs = (RG * 15 mA) / (15 mA - 500 mA). Simplifying further, Rs = (RG * 15 mA) / (-485 mA).
Rearranging the equation,
we get Rs = - RG * (15 mA / 485 mA). Since RG is given as (RG-59), we substitute it into the equation to obtain Rs = - (RG-59) * (15 mA / 485 mA).
The result of this calculation gives us the value of the shunt resistance Rs, which is approximately 1.02 Ω. Therefore, a shunt resistance of approximately 1.02 Ω should be added in parallel with the galvanometer to convert it into an ammeter with a maximum reading value of 500 mA.
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While driving fast around a sharp right turn, you find yourself pressing against the car door. What is happening? (a) Centrifugal force is pushing you into the door. (b) The door is exerting a rightward force on you. (c) Both of the above. (d) Neither of the above.
Answers
While driving fast around a sharp right turn, you find yourself pressing against the car door because of Centrifugal force is pushing you into the door.
What is Centrifugal force?
The apparent force that appears to push an object travelling in a circle away from the centre of the circle is known as centrifugal force. It is an apparent force since the motion of the object is what is causing it, not an actual force.A continuous change in direction occurs when an object moves in a circular motion, which causes it to accelerate continuously. Newton's rules of motion state that every object that accelerates must be under the influence of a force. This force, known as centripetal force in the context of circular motion, pulls the object in the direction of the Centre of the circle and prevents it from travelling in a straight path.Centrifugal force is the apparent force that seems to act on an object moving in a circular path, pushing it away from the center of the circle. In the case of a car turning a corner, the car and its occupants are moving in a circular path, and centrifugal force acts on the occupants, pushing them away from the center of the circle. This force is responsible for the sensation of being pushed against the car door while turning.
Therefore, while driving fast around a sharp right turn, you feel the apparent force of centrifugal force pushing you outwards, which makes you press against the car door to counteract this force and maintain your balance.
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Q.1- A 3000 cm3 tank contain O2 gas at 20 °C and a gauge pressure of 2.5 x 106 Pa. Find the mass of oxygen in the tank.
Answers
Do atomic bombs and nuclear reactors function in the same manner?
Answers
Answer:
No, they do not function in the same manner.
Explanation:
I actually don't know why.
The flow of electricity in a certain path is called.
Answers
The flow of electricity in a certain path is the circuit.
While moving a box 10.0 m across the floor, Sam pushes with a force of 150 N to the right. The force friction acting on the box is 25.0 N to the left. What is the net work done on the box by these 2 forces
Answers
Answer:
Explanation:required formula is
W 1=F*S
W1=work done by Sam =?
F=force applied by sam=150N
S=displacement =10m
again
W2=F*S
W2=work done by friction =?
S=displacement =10m
F=friction =25N
W=W1-W2=net work done
please feel free to ask if you have any questions
Pls someone I need it urgently and explain Solving and explanation so I can understand Thank you
Answers
Answer:
f = 6.37 Hz, T = 0.157 s
Explanation:
The expression you have is
y = 5 sin (3x - 40t)
this is the equation of a traveling wave, the general form of the expression is
y = A sin (kx - wt)
where A is the amplitude of the motion, k the wave vector and w the angular velocity
Angle velocity and frequency are related
w = 2π f
f = w / 2π
from the equation w = 40 rad / s
f = 40 / 2π
f = 6.37 Hz
frequency and period are related
f = 1 / T
T = 1 / f
T = 1 / 6.37
T = 0.157 s
Since these three vehicles would all go the same speed at the bottom if released from the same height, would they all possess the same amount of kinetic energy? Mid-point between maximum height and zero
Answers
Since these three vehicles would all go the same speed at the bottom if released from the same height, they would not all possess the same amount of kinetic energy because they have different amounts of potential energy.
Kinetic energy is dependent on the velocity of the object as well as its mass. Therefore, the three vehicles, though they have the same speed, would differ in their kinetic energy due to their varying mass. This concept is known as mechanical energy and is the sum of kinetic and potential energy.
Mechanical energy is also constant in an ideal situation where no external forces are acting upon the object. For instance, the three vehicles will all have the same mechanical energy at the release point but would not possess the same amount of kinetic energy due to their mass difference. Therefore, they would have different amounts of potential energy when released.
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The volume per second of a fluid flowing through a horizontal pipe of length l is given by kpa/n where k is constant, p is the excess pressure (force per unit area) a is the radius of the pipe and U is the frictional quantity of dimension MLT-1 by dimensions find the number x
Answers
According to the given statement the number x is 2. The number x represents the dimensions of the term p * a in the given equation.
By comparing the dimensions of both sides of the equation, we find that x is equal to 2.
The equation given is:
Volume per second = k * (p * a) / n
Where:
- k is a constant
- p is the excess pressure (force per unit area)
- a is the radius of the pipe
- n is the frictional quantity of dimension MLT⁻¹
To find the number x, we need to determine the dimensions of each term in the equation.
1. Dimension of Volume per second:
- Volume has the dimension L³ (length cubed)
- Time has the dimension T (time)
- Therefore, Volume per second has the dimension L³ / T
2. Dimension of k:
- The equation states that k is a constant. Constants are dimensionless.
3. Dimension of p * a:
- Pressure has the dimension M / (L * T² ) (mass divided by length and time squared)
- Radius has the dimension L (length)
- Multiplying pressure by radius results in the dimension M / (L * T² ) * L = M / (L² * T² )
4. Dimension of n:
- Given in the question, n has the dimension MLT⁻¹
(mass times length times time to the power of -1)
Now, we can equate the dimensions:
L³ / T = k * (M / (L² * T² )) * MLT⁻¹
Simplifying the dimensions:
L³ / T = k * M / (L² * T² ) * MLT⁻¹
L³ / T = k * M / L² * M / T² * L^-1 * T⁻¹
L³ / T = k * M² / L² * T⁻¹
To equate the dimensions, both sides of the equation must have the same dimensions. Therefore:
L³ / T = k * M² / L² * T⁻¹
Comparing the dimensions on both sides, we can conclude:
L³ / T = k * M² / L²* T⁻¹
The dimensions on the left side are L^3 / T, and the dimensions on the right side are (k * M²) / (L² * T).
Therefore, the number x is 2.
The number x represents the dimensions of the term p * a in the given equation.
By comparing the dimensions of both sides of the equation, we find that x is equal to 2.
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How is blue colour made?
Answers
Answer:
In terms of the light spectrum, blue is a primary color, which means that it is one of the base colors that exist in the universe and it cannot be created by combining different colors together. The primary pigment colors are cyan, magenta, and yellow. Cyan absorbs red, yellow absorbs blue, and magenta absorbs green.
Explanation:
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Types. Blue pigments were originally made from minerals such as lapis lazuli, cobalt and azurite, and blue dyes were made from plants; usually woad in Europe, and Indigofera tinctoria, or true indigo, in Asia and Africa. Today most blue pigments and dyes are made by a chemical process. Mark as brainliest
Describe three tasks performed by a sound engineering technician.
Answers
Answer:
Operate, monitor, and adjust audio, video, lighting, and broadcast equipment to ensure consistent quality. Set up and take down equipment for events and live performances.
Which statements are true for an electron moving in the direction of an electric field and why? (There may be more than one correct choice.)
(a) Its electric potential energy increases as it goes from high to low potential.
(b) Its electric potential energy decreases as it goes from high to low potential.
(c) Its potential energy increases as its kinetic energy decreases.
(d) Its kinetic energy decreases as it moves in the direction of the electric field.
(e) Its kinetic energy increases as it moves in the direction of the electric field.
Answers
The correct statements of an electric field are: (a) Its electric potential energy increases as it goes from high to low potential. (d) Its kinetic energy decreases as it moves in the direction of the electric field.
(a) When an electron moves from a region of high electric potential to a region of low electric potential, its electric potential energy increases. This is because the electron experiences a change in potential energy due to the electric field. Moving in the direction of the electric field, the electron gains potential energy. (d) As the electron moves in the direction of the electric field, its kinetic energy decreases. This is because the electric field does work on the electron, converting its kinetic energy into potential energy. The electron loses kinetic energy as it accelerates in the direction of the field. (c) and (e) are incorrect statements. The potential energy and kinetic energy of the electron are not directly related in this context. While the electron's potential energy may change, its kinetic energy does not necessarily follow a predictable pattern solely based on the direction of the electric field.
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Please do ( Test your understanding)
Answers
Answer:
Just convert the answers down, plug in the numbers and move the decimal to where it needs to be equal to.
Answer:
I have already given answer
Explanation:
see in upper comment there is my answer :)
2) A skier stands at rest and begins to ski downhill with an acceleration of 3.0 m/s² {downhill). What is
her displacement after 15.0 seconds?
Answers
Answer:
her displacement s=337.5m
Explanation:
check out the above attachment ☝️
Displacement after 15.0 seconds s= 337.5 m
What is acceleration?
The rate of change of velocity is called acceleration.
Acceleration. speed is the charge of the exchange of displacement. Acceleration is the charge of the exchange of speed. velocity is a vector quantity because it consists of each significance and direction. Acceleration is also a vector quantity as it's far just the fee of alternate of pace.
Acceleration of 3.0 m/s²
Time= 15.0 seconds
S= ut + 1/2 at²
S = 0+0.5*3*15*15
=337.5 m
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Fiber optic cables allow bits to travel at the speed of light without any signal loss over long distances. Group of answer choices True False
Answers
Answer:
true
Explanation:
They're designed for long-distance, high-performance data networking, and telecommunications. Compared to wired cables, fiber optic cables provide higher bandwidth and transmit data over longer distances.13 May 2021
what force is driving the orbits positioning of the planets around the sun
Answers
Answer:
he found that a single forece known as gravity keeps the planets in their orbits around the sun gravity force that keeps planets in their orbits calculus a branch of mathmatics partially developed by Newton and used to explain his laws
Explanation:
I hope you have a nice day and please mark me(:
What is one use of ultraviolet light?
A. to broadcast TV signals
B. to kill harmful bacteria
C. airport security
D. in radios
Answers
Answer:
B. to kill harmful bacteria
Explanation:
Ultraviolet light can be used in a variety of ways including killing harmful bacteria and sterilization
how many data streams are used in 802.11ac wave 2 devices?
Answers
There are 4 data streams are used in 802.11ac wave 2 devices.
The 802.11ac standard specifies a theoretical maximum connection speed of up to 7 Gbit/s. By increasing the channel width to 80 MHz, increasing the spatial streams, and supporting the new 256-QAM modulation, we were able to significantly increase the data transmission rate. However, the Wave 2 standard could open the door to Gigabit WiFi.
The physical PHY rate impacts the data transfer throughput rate, which is much higher in wave 2. Wave 1 PHY rate max reaches 1.3Gbps, and Wave 2 reaches 2.34Gbps. 802.11n and 802.11ac technologies support multiple antennas. 2x2 or 4x2 in the specification means 2 transmit antennas and 2 receive antennas or 4 transmit antennas and 2 receive antennas. See Wi-Fi, 802.11, wireless routers, and dual-band routers for more information.
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The graph represents the reaction 2H₂ + O₂ 2H₂O as it reaches
equilibrium. Based on the graph, which two statements about this reaction
are true?
Concentration (mol/L)
1
2
Time (s)
3
4
- H₂O
H
Answers
The following are true :
C. At point 2 the concentrations of H20...O2... & H2 are all changing toward their equilibrium concentrations
D. At point 1 more reactants are converted to products than products are converted to reaction.
What is equilibrium ?A state in which opposing forces or actions are balanced so that one is neither stronger nor greater than the other. Demand and supply were in balance chemical balance. An object is in equilibrium when all the forces acting on it are balanced. These forces are considered balanced if the rightward force balances the leftward force and the upward force balances the downward force. Examples of balance are: A book quietly placed on the table. A car that travels at a fixed speed. A reaction in which the forward and reverse reaction rates are equal.To learn more about equilibrium from the given link :
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Nuclear power stations convert the nuclear energy stored in nuclear fuel into what other store of useful energy?
Answers
Answer:
The right answer is "thermal energy" or "thermal" or "heat" or "heat energy" or "electricity" or "electrical energy"
Explanation:
Nuclear fuel is used to heat water, increasing its thermal energy. This hot water is used to turn turbines that generate electrical energy.
Nuclear power stations convert the nuclear energy stored in nuclear fuel into thermal energy.
What is thermal energy?
Thermal energy is defined as a type of energy which is contained within a system which is responsible for temperature rise.Heat is a type of thermal energy.It is concerned with the first law of thermodynamics.
Thermal energy arises from friction and drag.It includes the internal energy or enthalpy of a body of matter and radiation.It is related to internal energy and heat .It arises when a substance whose molecules or atoms are vibrating faster.
These vibrating molecules and atoms collide and as a result of which heat is generated in a substance , more the collision of particles , higher is the thermal energy.It has 3 types conduction, convection and radiation.
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4. A pipe enters a water tank at a point 6.50 m below
the surface of the contained water. What is the
water pressure in this pipe?
Answers
Answer:
165 kPa
Explanation:
Absolute pressure is:
P = Patm + ρgh
where Patm is the atmospheric pressure,
ρ is the density,
g is acceleration due to gravity,
and h is the depth.
P = 101,300 Pa + (1000 kg/m³) (9.8 m/s²) (6.50 m)
P = 165,000 Pa
P = 165 kPa
How does the mass of a star determine its lifetime? Why?
Answers
The mass of a star plays a crucial role in determining its lifetime. In general, more massive stars have shorter lifetimes, while less massive stars have longer lifetimes. This occurs due to two main factors: nuclear fusion rate and fuel availability.
Firstly, the nuclear fusion rate is the process by which a star converts hydrogen into helium, releasing energy in the form of light and heat. Massive stars have stronger gravitational forces, which leads to higher pressures and temperatures in their cores. This causes nuclear fusion to occur at a faster rate, releasing more energy and making the star shine brighter. However, this increased rate of fusion also means that the star consumes its fuel more rapidly.
Secondly, fuel availability refers to the amount of hydrogen a star has for nuclear fusion. Although massive stars contain more hydrogen, the faster rate of fusion means that they deplete their fuel much more quickly than less massive stars. As a result, they have shorter lifetimes.
In summary, a star's mass determines its lifetime because more massive stars have higher nuclear fusion rates and deplete their fuel more quickly, leading to a shorter lifespan. On the other hand, less massive stars have slower fusion rates, conserving their fuel and enjoying longer lifetimes.
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as the change in speed at the boundary of two materials is greater what happened to the angle of refraction (please help )
a. it becomes less
b. it becomes more
c. it stays the same
Answers
Hope this helps.