Answer:
C
Explanation:
The answer is straight line motion
Answer:
C
Explanation:
straight line motion. Its the same as the linear motion.
a dynamite blast at a quarry launches a rock straight upward, and 2.1 s later it is rising at a rate of 12 m/s. assuming air resistance has no effect on the rock, calculate its speed (a) at launch and (b) 4.5 s after launch.
The rock was launched in the upward direction with an initial velocity of 8.58 m/s.The speed of the rock 4.5 seconds after launch is 35.52 m/s.
Given:
Time after launch (t) = 2.1 s
Rising rate (v) = 12 m/s
(a) By using the equation of motion v = u + at
where,
v denotes the final velocity, u initial velocity, a is the acceleration, and t is the time.
v = u + at
12= u + (9.8) × 2.1 s
u = 12 - (9.8 m/s² × 2.1 s)
u = 12 - 20.58
u = -8.58 m/s
The negative sign indicates that the rock was launched in the upward direction with an initial velocity of 8.58 m/s.
(b) To calculate the speed 4.5 seconds after launch,
v = u + at
v = -8.58 + (9.8) × 4.5 s
v = 35.52 m/s
The speed of the rock 4.5 seconds after launch is 35.52 m/s.
To know more about the equation of motion:
https://brainly.com/question/31314651
#SPJ4
true or false: clear fluid leaking out of your car is usually coolant and means you should check the water pump.truefalse
False. Clear fluid leaking from a car is not necessarily coolant, and it does not necessarily indicate a problem with the water pump.
Cars can have multiple fluids that are clear or nearly clear in color, such as water, windshield washer fluid, or even condensation from the air conditioning system. Therefore, without further information, it is not possible to determine the exact fluid leaking based solely on its color.
To properly diagnose the issue, it is important to identify the specific location of the leak and consider other factors such as the fluid's smell, consistency, and the vehicle's symptoms or warning lights. If there is a coolant leak, it could be due to various reasons such as a damaged radiator, a leaking hose, a faulty coolant reservoir, or a malfunctioning water pump. However, it is not accurate to conclude that a clear fluid leak always indicates a problem with the water pump.
To know more about air conditioning system, visit
https://brainly.com/question/32246245
#SPJ11
Dos carritos se colocan en una mesa sobre la que pueden moverse sin rozamiento y se sujetan comprimiendo un resorte entre ellos. El carrito 1 tiene doble masa que el 2. De pronto se sueltan. A) Compara las velocidades, cantidades de movimiento y energías cinéticas que adquieren, b) ¿Cómo serían las respuestas si la masa del carrito 1 fuese mucho mayor que la del 2?
Answer:
a) v₁ = - ½ v₂, K₁ / K ₂ = ½,)
Explanation:
A) Let's use the conservation of the moment, for this we define the system formed by the spring and the two cars, so the force during the separation is internal, therefore the moment is conserved
initial instant. Before releasing the carts
p₀ = 0
final instant. After jumping the cars
p_f = M v₁ + m v₂₂
how the moment was preserved
p₀ = p_f
0 = M v₁ + m v₂
v₁ = - m / M v₂
indicate that M = 2m
v₁ = - ½ v₂
the kinetic energy of each car is
K₁ = ½ M v₁²
K₁ = ½ 2m (v₂/ 2) ²
K₁ = m ₂v₂² / 4
K₂ = ½ m v₂²
the relationship between the kinetic energies is
K₁ / K₂ = ½
B) If the much greater than the mass of car 1 is mass of car 2
v = - m / M v₂
In this case, the speed of car 1 is very small, so the car 1 practitioner does not backtrack and car 2 leaves with a lot of speed.
The energy is still conserved, where almost all the energy has it is car 2
Which is NOT one of the four principals of Dalton’s atomic theory?
A. Atoms of one element are identical while atoms of different elements are different
B. Electrons orbit the nucleus in energy levels
C. Elements are made of particular called atoms
Answer:
Your answer would be letter B. Electrons orbit the nucleus in energy level.
Explanation:
Hope it helps..
Just correct me if I'm wrong, okay?
But ur welcome!!
(;ŏ﹏ŏ)(◕ᴗ◕✿)
Answer:
B
Explanation:
Dalton's 4 principles did not involve discussion of the electrons or their orbits.
A satellite experiences a gravitational force of magnitude F when at rest at the surface of Earth. In a circular
orbit about Earth, the satellite experiences a gravitational force of magnitude F/16. What is the radius of the
orbit in terms of Earth's radius R?
The radius of the orbit of the satellite is four times the radius of Earth.
What is the radius of the orbit in terms of Earth's radius R?
The gravitational force experienced by an object in circular orbit is given by the formula:
F = GMm/r^2
where;
G is the gravitational constant, M is the mass of the central object (in this case, Earth), m is the mass of the orbiting object (in this case, the satellite), and r is the radius of the orbit.We are given that the magnitude of the gravitational force on the satellite in orbit is F/16, compared to the gravitational force F experienced by the satellite at rest on the surface of the Earth. Therefore,
F/16 = GMm/r^2
Dividing both sides of the equation by F, we get:
1/16 = (GMm/r^2)/F
Using the fact that GM/R^2 = g,
where g is the acceleration due to gravity on the surface of Earth,we can rewrite the equation as:
1/16 = (gR^2/r^2)
Multiplying both sides of the equation by r^2, we get:
r^2/16 = gR^2
Multiplying both sides of the equation by 16, we get:
r^2 = 16gR^2
Taking the square root of both sides, we get:
r = 4R
Learn more about gravitational force here: https://brainly.com/question/72250
#SPJ1
how long does it take to get to the titanic from the surface
Considering the depth and the speed, it would take approximately 2.5 to 3 hours to get to the Titanic from the surface.
The time it takes to get to the Titanic from the surface depends on various factors, such as the depth of the Titanic wreck and the speed of the vessel you are using to reach it. The Titanic is located approximately 12,500 feet (3,800 meters) below the surface of the ocean.
Assuming you are using a submarine or a deep-sea diving vessel, it typically takes around 2.5 to 3 hours to reach a depth of 12,500 feet. This is because these vessels generally have a cruising speed of about 4 to 5 knots (4.6 to 5.8 miles per hour).
Therefore, considering the depth and the speed, it would take approximately 2.5 to 3 hours to get to the Titanic from the surface.
To know more about Titanic
https://brainly.com/question/8159374
#SPJ11
What do you think Jose’s grandmother meant by saying that the bread was too dense? What other things can you think of that are “dense”?
Answer:
What I think that Jose's grandmother meant by saying that the bread was too dense is that she thinks the bread is too heavy or it can even mean to be too compacted in substance. The matter in the bread are close together and not spread out like in the air, when the matter in the air starts to come closer together it starts to make fog, because it is becoming more dense. Some more things that are heavy or dense are things like a big stereo speaker, an anvil, or even a big piece of wood used to build.
Explanation:
Which is a property of every heterogeneous mixture?
a.the mixture is made up of at least two different states.
b.the mixture is made up of something dissolved in a liquid.
c.the composition of the mixture is the same throughout.
d.the characteristics of the mixture change within a sample.
hana fills a cup with sandy ocean water. she pours the mixture through a filter. what does she collect that passes through the filter?
a.a sample of pure water
b.a solution of salt in water
c.a suspension of sand in water
d.a colloid of salt in water
which describe colloids? check all that apply.
1.heterogeneous mixtures
2.homogeneous mixtures
3.may have a uniform appearance
4.are made up of at least two substances
5.will settle out over time
when mixed, which states of matter form only a homogeneous mixture?
a.two liquids
b.two gases
c.a solid and
Answer: C for all of them
Explanation:
Because I'm smart
Jk
So basically its beacuse all of them have the same mixture since science can be interrelated and interchangebale in terms of formulas ok bye now
Thanks
Hope this helped you
Or not
Sorry if it didn't ig
At what time of day do we use more energy? Why?
Answer:
The bottom line
That's because our internal clocks tend to use up the most calories from 4 p.m. to 6 p.m. and the least from 4 a.m. to 6 a.m., researchers concluded. If we're up late and eating when our bodies are using up fewer calories, those calories get stored instead, which can result in weight
Explanation:
Mark as Brainliest Please, hope that helps
What is the voltage produced by a 180 amp current flowing through a resistance of 0.5 ohms?????
Answer:
90
Explanation:
v=ir
voltage,I current,while r is the resistance
v=180×0.5
90
Assume air resistance is negligible and gravitational acceleration is 32.2 ft/s^2, a projectile is launched at 52 degrees above the horizontal with an initial velocity of 30 ft/s. The launch and landing sites are at the same elevation. What is the projectile's range?
A. 22.0 ft
B. 72.7 ft
C. 27.1 ft
D. 42.0 ft
Answer:
The range of the projectile can be calculated using the formula:
R = (v^2/g) * sin(2θ)
where v is the initial velocity, g is the gravitational acceleration, θ is the launch angle.
Substituting the given values:
R = (30^2/32.2) * sin(2*52)
R = 72.7 ft
Therefore, the answer is B. 72.7 ft.
A Styrofoam ball has just been shot straight up. Air resistance is not negligible (free body diagram)
In a free body diagram for an object projected upwards;
the acceleration due to gravity on the object is always directed downwards.the velocity of the object is always in the direction of the object's motion.An object projected upwards is subjected to influence of acceleration due to gravity.
As the object accelerates upwards, its velocity decreases until the object reaches maximum height where its velocity becomes zero and as the object descends its velocity increases, which eventually becomes maximum before the object hits the ground.
To construct a free body diagram for this motion, we consider the following;
the acceleration due to gravity on the object is always directed downwardsthe velocity of the object is always in the direction of the object's motion.For instance:
upward motion for velocity ↑ downward motion for velocity ↓
↑ ↓
↑ ↓
acceleration due to gravity ↓
↓
↓
Learn more here: https://brainly.com/question/13235430
The apparent path of the Sun, relative to the stars on the celestial sphere, over the course of a year. It is the orbit of the earth extended to the celestial sphere is called?
The apparent path of the Sun, relative to the stars on the celestial sphere, over the course of a year. It is the orbit of the earth extended to the celestial sphere is called ecliptic.
The celestial sphere is an imaginary sphere that surrounds the Earth, used by astronomers to describe the positions and movements of celestial objects such as stars, planets, and galaxies. The concept of the celestial sphere was introduced by ancient Greek astronomers, who believed that the stars were fixed on a giant sphere that surrounded the Earth.
This sphere was thought to rotate around the Earth, creating the illusion of the stars moving across the sky. The celestial sphere is divided into 88 constellations, each containing stars that are visible from Earth. The celestial sphere has several important reference points, such as the celestial equator, which is the projection of Earth's equator onto the sphere, and the ecliptic, which is the path of the Sun across the sky throughout the year.
To learn more about Celestial sphere visit here:
brainly.com/question/13196153
#SPJ4
do you think they were used creatively?
(ahhhggg ignore i dont remember how to delete answers)
No. In my opinion, they were not used creatively. They were used speciously, disingenuously, and unimaginatively.
As always, others are free to disagree.
All types of electromagnetic radiation travel at the speed of light. True or False?
Answer:
True
Explanation:
Generally speaking, we say that light travels in waves, and all electromagnetic radiation travels at the same speed which is about 3.0 * 108 meters per second through a vacuum.
Answer:
absolutely true
Explanation:
as it travels in a speed of 30×108 m per second
express in standard form
(I)0.000038
Answer:
3.8 x 10^-5
Explanation:
all you doing is putting it in the standard form I hope this help
HEY CAN ANYONE PLS ANSWER THESE QUESTION!!!!!
1. A model can come in many shapes, sizes, and styles.
✅
2. Models can help scientists communicate their ideas, understand processes, and make predictions.
✅
3. Thomson's experiments with cathode ray tubes showed that all atoms contain tiny negatively charged subatomic particles or electrons.
✅
4. The plum pudding model has electrons surrounded by a volume of positive charge
✅
5. Electrons are kept in the orbit around the nucleus by the electromagnetic force.
IamSugarbee
the region enclosed by both of the cardioid r=1+cos(theta) and r=1-cos(theta)
The equation of the cardioid is r = a(1 + cos(θ)), where a is the distance of the center of the cardioid from the origin.
In this case, the two equations given are r = 1 + cos(θ) and r = 1 - cos(θ), which are the equations of two cardioids with the same center at the origin.
The first equation, r = 1 + cos(θ), represents the outer cardioid, and the second equation, r = 1 - cos(θ), represents the inner cardioid. The region enclosed by these two cardioids is the area between the two curves, which is the space between the outer and inner cardioids.
This region is symmetric about the x-axis, as the equations are symmetric about the x-axis. The region is infinite as the equations are defined for all real values of θ.
To learn problems on cardioid:
https://brainly.com/question/12075566
#SPJ4
(PLS HELP ME NOW!!!!!)
Answer:
D
Explanation:
Why was Mistahimaskwa worried about Treaty 6?
Mistahimaskwa, also known as Big Bear, was a Cree leader who lived in what is now Canada during the late 19th century. He was worried about Treaty 6, a treaty that was signed between the Canadian government and several First Nations in 1876.
Mistahimaskwa was concerned about the implications of the treaty for the traditional way of life of his people. The treaty granted the Canadian government control over vast tracts of land, including areas that were important for hunting and fishing. In exchange, the government promised to provide certain goods and services to the First Nations signatories. Mistahimaskwa was skeptical about the government's promises, and he feared that the treaty would result in the loss of his people's independence and autonomy. He also believed that the treaty would lead to conflicts between different First Nations groups, as they competed for resources and territory. Ultimately, Mistahimaskwa's fears were borne out, as the treaty failed to protect the rights and interests of the First Nations signatories. Many of the promises made by the government were not kept, and the treaty contributed to the displacement and marginalization of Indigenous peoples in Canada.
For such more questions on government
https://brainly.com/question/12828544
#SPJ11
Which best describes why projectiles move in a curved path?
A) They have constant horizontal velocity and vertical acceleration.
B) They have horizontal acceleration and constant vertical velocity.
C) They have horizontal momentum and constant vertical velocity.
D) They have horizontal acceleration and vertical momentum.
Answer:
A. The have horizontal velocity and vertical acceleration.
Explanation:
Projectiles move in a curved path because : ( A ) They have constant horizontal velocity and vertical acceleration
Projectile movementProjectiles move in a curved path due to constant horizontal velocity and vertical acceleration due to gravity that acts on it. Projectile movement starts when an object is thrown/projected into the air. The object thrown into the air will travel in a curved path known as trajectory.
Hence we can conclude that Projectiles move in a curved path because They have constant horizontal velocity and vertical acceleration.
Learn more about Projectile motion : https://brainly.com/question/24216590
what is the kinetic energy in joules of a 1500kg car that is moving at a speed of 55 miles per hour (24.6m/s)
Answer:
453,870 J
Explanation:
KE = 1/2mv² = 1/2(1500 kg)(24.6 m/s)² = 453,870 J
PLSSSSSSSS ASAP!!!!!!
If the distance and time of an object are given, and I need to find speed, I will *
1.add the distance and time
2.divide the distance and time
3.multiply the distance and time
Answer:
2. divide the distance and time
speed=distance÷time
What happens to the energy produced by burning gasoline in a car engine? group of answer choices the energy heats the parts of the engine. the energy is transformed into work to move the car. all of the answer choices the energy is lost as heat in the exhaust.
The correct answer to the given question about burning gasoline in a car engine is all of the above.
Most spark-ignited internal combustion engines, often known as petrol engines, use gasoline as a fuel since it is a clear, petroleum-derived combustible liquid. It is primarily made up of organic compounds obtained from petroleum fractional distillation, reinforced with a number of additions. From a barrel of crude oil, U.S. refineries typically yield 19 to 20 gallons of gasoline, 11 to 13 gallons of distillate fuel, the majority of which is sold as diesel fuel, and 3 to 4 gallons of jet fuel. The processing in an oil refinery and the assay of the crude oil determine the product ratio. According to definitions, a barrel of oil can store 42 US gallons, which is equivalent to 159 liters or 35 imperial gallons.
To learn more about gasoline click here
brainly.com/question/12847098
#SPJ4
Blocks A (mass 3.50 kg) and B (mass 10.00 kg) move on a frictionless, horizontal surface. Initially, block B is at rest and block A is moving toward it at 9.00 m/s. The blocks are equipped with ideal spring bumpers. The collision is head-on, so all motion before and after the collision is along a straight line. Let +x be the direction of the initial motion of A. Find the maximum energy stored in the spring bumpers and the velocity of each block at the time of the collision
The total energy that can be stored in the spring bumpers is 43.8 J, or KE = 43.8.
What is the formula for energy capacity?The battery's power capacity is the amount of energy it can hold. Its power is commonly stated in Watt-hours (the symbol Wh) (the symbol Wh). A Watt-hour is equal to the voltage (V) and current (Amps) that a battery can produce for a specific period of time (generally in hours). Voltage * Amps * hours = Wh.
Block A's momentum before to the impact can be calculated using the formula p1 = m1v1 = (3.50 kg)(9.00 m/s) = 31.5 kgm/s.
Block B's initial momentum is p2 = m2v2 = 0, indicating that it is at rest.
Prior to the collision, the system's total momentum was equal to 31.5 kgm/p1 + p2.
\(p1 + p2 = (m1 + m2)v\)
\(31.5 kgm/s = (3.50 kg + 10.00 kg) * v\)
\(31.5 kgm/s = 13.50 kg * v\)
\(v = 31.5 kg*m/s / 13.50 kg = 2.33 m/s\)
The kinetic energy of block A before the collision is given by KE1 = (\(1/2)m1v1^2 = (1/2)(3.50 kg)(9.00 m/s)^2 = 141.8\) J
The kinetic energy of block B before the collision is KE2 = \((1/2)m2v2^2 = 0\)
The total kinetic energy before the collision is KE1 + KE2 = 141.8 J
\(ΔKE = KEf - KEi = (1/2)(m1 + m2)v^2 - KE1 - KE2\)
\(ΔKE = (1/2)(3.50 kg + 10.00 kg)(2.33 m/s)^2 - 141.8 J - 0\)
ΔKE = 43.8 J\(31.5 kgm/s = 13.50 kg * v\)
To know more about energy visit:-
https://brainly.com/question/1129555
#SPJ1
How to find the acceleration?
Answer:
speed/time
Explanation:
Answer:
a= (Vf - Vi)
t
To find acceleration (a) you need to subtract the finale velocity (Vf) minus the initial velocity (vi) divided by time (t) as shown in the equation above.
Nathan is standing 2 feet away from a plane mirror. Hiva is standing 5 feet further than
Nathan in comparison to the mirror. The distance between Nachan and Hiva's image is:
Answer:
They are standing 3 feet away from each other
Explanation:
If Nathan Is standing 2 feet away from the mirror. Then Hiva is standing 7 feet away from the mirror is she is standing 5 feet further than him. They are standing 3 feet away from each other.
The pocket of hot air appears to be a pool of water becauseA. Light reflects at the boundary between the hot and cool air.B. Its density is close to that of water.C. Light refracts at the boundary between the hot and cool air.D. The hot air emits blue light that is the same color as the daytime sky.
The pocket of hot air appears to be a pool of water because light refracts at the boundary between the hot and cool air. The answer is C.
When there is a pocket of hot air above a surface, it creates a mirage effect, which makes the surface appear as if it is reflecting a pool of water. This happens due to the bending of light as it passes through air of varying temperatures. Hot air has a lower density than cool air, which causes the light to refract or bend away from its original path as it passes through the boundary between the hot and cool air.
This bending of light causes the image of the ground or distant objects to appear displaced from their actual positions, creating the illusion of a pool of water. The effect is similar to looking at an object through a lens. This phenomenon is called a mirage, and it is a common occurrence in desert regions, where the temperature can vary greatly between the hot sand and the cooler air above it. Option C is correct choice.
To know more about light, here
brainly.com/question/29026084
#SPJ4
Three-fourths of the elements on the
periodic table are:
a. Metals
b. Nonmetals
c. metalloids
Answer:
b
Explanation:
because the metalloids are the thing in the middle
How does the time in air change with initial horizontal velocity
Answer:
The projectile's horizontal speed is constant throughout the entire trajectory because gravity only acts downwards in the vertical direction.
Explanation:
I did this in Physics a while ago but I believe my answer is correct.
Hope this helps! (: