You have built a circuit that has one battery (1. 5V) and one light. When using a multimeter, the voltage at the light will read


volts. (Use numbers)

Answer:

440

Explanation:

1 mile =1760 yards

0.25 miles =?

\( \frac{0.25 \times 1760}{1} \)

=440 yards

Answer:

80

Explanation:

You calculate work by W(j)=Force(n) x distance moved (m)

So 20.0 N x 4.0 m = 80.

:)

The work done when a baker pushes a cart full of rolls with a force of 20.0 N for a distance of 4.0 m is 80 Nm.

The work done by a force can be defined as the product of the displacement of that object and the component of the applied force of the object which is in the same direction as that of displacement. When we push a block with some force 'f' and the body moves with some acceleration, work is done.

W = f × d

where, W = work done,

f = applied force,

d = displacement of the object

W = 20N × 4.0m

W = 80Nm

Therefore, the work done by the baker on that cart is 80 Newton meters.

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Answer:

A) Slower

Explanation:

    Less / low energy means less / slower speed.

Have a nice day!

    I hope this is what you are looking for, but if not - comment! I will edit and update my answer accordingly. (ノ^∇^)

- Heather

Answer:

radio TV set and telephone

The answer is: Reflected

Explanation:

An image is a copy of an object that is formed by reflected (or refracted) light. Regular reflection occurs when light reflects off a very smooth surface and forms a clear image. Diffuse reflection occurs when light reflects off a rough surface and forms a blurry image or no image at all.

In a rotating space habitat, the outward force felt by the person is called centrifugal force. This force acts perpendicular to the axis of rotation and creates artificial gravity, allowing the person to experience a sense of weight.

Consider someone in a rotating space habitat. The outward force felt by the person is the centrifugal force. This force is caused by the person's inertia as they move in a circular path around the center of the habitat. The faster the habitat rotates, the greater the centrifugal force the person will feel pushing them away from the center of rotation. This force is counteracted by the gravitational force of the habitat, which keeps the person from flying off into space.
In a rotating space habitat, the outward force felt by the person is called centrifugal force. This force acts perpendicular to the axis of rotation and creates artificial gravity, allowing the person to experience a sense of weight.

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Answer:

a. gravity & hand on book

b. yes - 3rd law

c. no, the are acting on the same object

Hope this helped!

Answer:

The first force is your hand holding the book up, and the other one is gravity pulling the book down. Hope i helped :D

Explanation:

Answer:

Wire length, current value, and potential difference certainly belong to the continuous category.

Perhaps, eye color would be the 4'th value because of the continuity involved

The time takes for the green ball to reach the ground is equal to 0.78 s. As both balls are thrown from the same height they will take the same time to reach the ground irrespective of their velocity.

The equations of motion can be described as the equations which establish the relationship between the time, velocity, acceleration, and displacement of a moving object.

The equations of motions as the mathematical expressions:

\(v = u +at\\S = ut +(1/2)at^2\\v^2-u^2= 2aS\)

Given, the height from which the ball is thrown, h = 3

From the 2nd equation of motion, calculate the time taken by the ball reach to the ground:

H = ut + (1/2)gt²

3 = 0 + (1/2)× 9.8×t²

t = 0.78 s

As the time is independent of the velocity of a ball so both balls take the same time to reach the ground as they are thrown from the same height.

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Answer:

The true statements are;

C and D

Explanation:

The tendency of an atom to gain or lose electrons in a chemical reaction are given by its electronegativity and electropositivity respectively

Electronegativity is a measure of an atom's capacity to attract electrons from neighboring particles, with atoms that are more likely to gain an electron, being described as having a higher electronegativity

Electronegativity increases across the period with increasing number of valence electrons, therefore, elements with five, six, or seven electrons, which are located on the far right of the periodic table are said to have higher electronegativity and therefore more likely to gain electrons in a chemical reaction

Electropositivity is the quantification or measure of an element to donate or give electrons and become positively charged ions in a chemical reaction

The fewer the number of valence electrons an element has, the more likely the element will undergo a reaction by donating the valence electrons to a more electronegative atom and become positively charged

Electropositivity decreases across the period and therefore, elements with one, two, or three valence electrons which are located in groups I, II, and III, are more likely to lose electrons in a chemical reaction

Answer:

C+D

Explanation:

Answer:

The final velocity is 5.24 m/s

The initial speed is 65.5 m/s

Explanation:

Horizontal Motion

When an object is launched horizontally with an initial speed v from a height h, it describes a curved path ruled exclusively by gravity until it eventually hits the ground.

The horizontal component of the velocity is always constant because no acceleration acts in that direction, thus:

\(v_x=v_o\)

The vertical component of the velocity changes in time t because gravity makes the object fall at increasing speed given by:

\(v_y=g.t\)

The maximum horizontal distance traveled by the object can be calculated as follows:

\(\displaystyle d=v\cdot\sqrt{\frac {2h}{g}}\)

Another useful formula allows us to calculate the distance traveled by the object in terms of time t:

\(\displaystyle y=\frac{g.t^2}{2}\)

a.

The time taken for the arrow to reach the ground can be calculated by solving the above equation for t:

\(\displaystyle t=\sqrt{\frac{2y}{g}}\)

Since y=1.40 m:

\(\displaystyle t=\sqrt{0.2857}\)

t = 0.53 s

The final vertical speed is:

\(v_y=9.8.(0.53)=5.24\ m/s\)

The final velocity is 5.24 m/s

b)

The initial speed can be calculated by solving the following equation for v:

\(\displaystyle d=v\cdot\sqrt{\frac {2h}{g}}\)

\(\displaystyle v=d\cdot\sqrt{\frac {g}{2h}}\)

\(\displaystyle v=35\cdot\sqrt{\frac {9.8}{2(1.40)}}\)

v = 65.5 m/s

The initial speed is 65.5 m/s

The net electric field at the center of the square is directed along the positive y-axis and has a magnitude of kq/2^3/2.

We can choose a coordinate system with origin at center of square, so that the position vectors of the charges are:

\(r1 = (1,1) \\r2 = (-1,1) \\r3 = (1,-1)\)

The electric field at the center of square due to each charge can be calculated using Coulomb's law:

\(E1 = kq(r1 - r)/(r1 - r)^3 \\E2 = kq(r2 - r)/(r2 - r)^3\\E3 = kq(r3 - r)/(r3 - r)^3\)

Since the charges are all of the same magnitude q, the electric fields have the same magnitude:

|E1| = |E2| = |E3| = kq/2^3/2

To find the direction of the electric field at the center of the square, we need to add the three electric fields vectorially:

\(E = E1 + E2 + E3\)

Using vector addition:

\(E = kq/2^3/2 [(1,1)/(2^1/2) - (1,-1)/(2^1/2) - (-1,1)/(2^1/2)]\)

\(E = kq/2^3/2 (0,2)\)

The magnitude of the electric field is:

|E| = \(kq/2^3/2\)

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--The complete Question is, What is the net electric field at the center of a square with a side length of 2 cm, when three point charges of the same magnitude q are placed at three of its corners? Give the magnitude and direction of the electric field.--

Answer:

The ratio of the time period of object 1 to the time period of object 2 is \(\frac{1}{4}\). (T₁ : T₂) = 1 : 4

Explanation:

Let suppose that both objects are moving along the circular paths at constant speed, such that period of rotation of each object is represented by the following formula:

\(\omega = \frac{2\pi}{T}\)

Where:

\(\omega\) - Angular speed, measured in radians per second.

\(T\) - Period, measured in seconds.

The period is now cleared:

\(T = \frac{2\pi}{\omega}\)

Angular speed (\(\omega\)) and linear speed (\(v\)) are related to each other by this formula:

\(\omega = \frac{v}{R}\)

Where \(R\) is the radius of rotation, measured in meters.

The angular speed can be replaced and the resultant expression is obtained:

\(T = \frac{2\pi\cdot R}{v}\)

Which means that time period is directly proportional to linear speed and directly proportional to radius of rotation. Then, the following relationship is constructed and described below:

\(\frac{T_{2}}{T_{1}} = \left(\frac{v_{1}}{v_{2}}\right)\cdot \left(\frac{R_{2}}{R_{1}} \right)\)

Where:

\(T_{1}\), \(T_{2}\) - Time periods of objects 1 and 2, measured in seconds.

\(v_{1}\), \(v_{2}\) - Linear speed of objects 1 and 2, measured in meters per second.

\(R_{1}\), \(R_{2}\) - Radius of rotation of objects 1 and 2, measured in meters.

If \(\frac{v_{1}}{v_{2}} = 2\), \(R_{1} = 10\,m\) and \(R_{2} = 20\,m\), the ratio of time periods is:

\(\frac{T_{2}}{T_{1}} = 2\cdot \left(\frac{20\,m}{10\,m} \right)\)

\(\frac{T_{2}}{T_{1}} = 4\)

\(\frac{T_{1}}{T_{2}} = \frac{1}{4}\)

The ratio of the time period of object 1 to the time period of object 2 is \(\frac{1}{4}\).

Explanation:

Qualitative is to observe and note a quality about something - like the paper airplanes are made out of "white" paper. White is a qualitative property.

Quantitative is to observe and measure a value - like the time of flight of a paper airplane.

Yes, the pivot point (i.e., the triangle in the diagram upon which the ruler balances) exert a force on the ruler. No, it does not exert a nonzero torque about the pivot.

Pivot point is that point where an object rotates around. Sometimes, it is called the fulcrum or rotational axis.

A lever has a rigid bar that is able to pivot at one point and this point of rotation is known as the fulcrum. Force is applied at some point away from the fulcrum.

Torque is a measure of how much force acting on the object causes that object to rotate. The object rotates about an axis, which is called as the pivot point.

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Answer:

Option: 3 Speed √

is the right answer

The charge of a newly formed oxygen ion would be -2

Hope this helps :)

Answer:

a) Regular participation in physical activity reduces the risk of developing various diseases.

Answer:

I think A

Explanation:

I did some research on this today for class, here is what I wrote if you want an understanding why I think A is the answer: Exercise can cause a temporary boost in the production of macrophages, the cells that attack bacteria. During moderate exercise, immune cells circulate through the body more quickly and are better able to kill bacteria, which can help you not get colds and viruses, after a few hours the immune system will return to normal, the more you exercise the longer the effects will last. So the more you exercise the better your immune system will be!

Hope this helps, I attached a pdf of the form and stuff I used earlier if you want some info...

(tell me if it doesnt work)

A(n) line of sight option for WiMAX is one in which a fixed-dish antenna points at the WiMAX tower from a rooftop or pole

There are two components to a WiMAX system:

A WiMAX tower, which functions similarly to a cell phone tower, A single WiMAX tower can cover an area as vast as 3,000 square miles (8,000 square kilometers), or very nearly that.

A WiMAX receiver could be a tiny box, PCMCIA card, or they could be integrated into a laptop like WiFi access is currently.

WiMAX tower stations can establish direct wired connections with high bandwidth to the Internet. It can also establish a line-of-sight microwave link with another WiMAX tower. WiMAX is able to give coverage to remote rural regions thanks to this link to a second tower (commonly referred to as a backhaul) and a single tower's capacity to cover up to 3,000 square miles.

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Answer:

Is this considered free points

Explanation:

Answer:

The velocity is 39.24 m/s

Explanation:

The time of fall t = 4 seconds

The initial velocity u = 0 m/s  (since the ball is dropped, meaning it starts from rest)

Final velocity v = ?

Using

v = u + gt

where g is the acceleration due to gravity = 9.81 m/s^2

substituting, we'll have

v = 0 + (9.81 x 4)

v = 39.24 m/s

At a given pressure, a substance in the saturated vapor phase will be at a lower temperature than a superheated vapor.

Saturated vapor refers to the state of a material in which it contains a maximum quantity of vapor that is uniformly blended with the liquid or solid state of the same chemical composition at a specified temperature and pressure.

A superheated vapor is a vapor that is heated beyond its boiling point or saturation temperature for its pressure. As a result, it will not condense back into a liquid phase until it has cooled sufficiently. As a result, it's simply vapor, with no liquid portion to it.

According to Charles's law, if the pressure of a gas is kept constant, the volume of the gas varies directly with the temperature. If pressure remains constant and temperature increases, the volume of a substance expands, indicating that molecules are gaining energy and colliding with one another more frequently. As a result, the kinetic energy of the system increases. When a substance is in a superheated vapor state, it is at a higher temperature than when it is in a saturated vapor state at the same pressure.

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During the interaction between the sliding object and the spring, the total momentum of the system is conserved. In other words, the momentum before the interaction is equal to the momentum after the interaction. This is known as the principle of conservation of momentum.

Initially, the sliding object has momentum in the direction of its motion, while the stationary object has zero momentum. When the sliding object hits the spring, the spring compresses and the sliding object slows down. However, the momentum of the sliding object is transferred to the spring and the stationary object. As the spring expands, it exerts a force on the stationary object, causing it to start moving in the same direction as the sliding object.

At the point where the spring is most compressed, both objects are moving at the same speed. This means that they have the same momentum, and the total momentum of the system is the sum of their momenta. When the spring expands fully and both objects move away from each other, the momentum of the sliding object is transferred back to it, while the stationary object continues to move in the same direction with the momentum it gained during the interaction.

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Answer:

I think its false cause with a slope you have acceleration

Answer:

See below

Explanation:

Assuming no resistance

DISTANCE =  1/2 a t^2

443 = 1/2 (9.81)t^2      Shows t = 9.5 seconds

From the table, we can see that the frequencies for scores 3 through 10 (excluding 0) are given. By summing those frequencies, we can obtain the total number of students who received a score higher than 0.

To determine the number of students who received a score higher than 0 on the happiness scale, we need to sum up the frequencies for all the scores greater than 0.

To find the point for the 86th percentile, we need to determine the happiness score that corresponds to that percentile. From the given table, we can see the cumulative percent column, which represents the percentage of participants with a happiness score up to that point.

To find the point for the 86th percentile, we look for the cumulative percent that is closest to 86%. From the table, we can see that the cumulative percent at the 77.8% mark corresponds to the score of 8 on the happiness scale. Therefore, the point for the 86th percentile would fall between the score of 8 and 9.

To determine the exact point for the 86th percentile, we can interpolate. By calculating the difference between the cumulative percent at 77.8% and 92.6% (which represents the next available score of 9), and then proportionally adding that difference to the score of 8, we can estimate the score for the 86th percentile.

Regarding the percentage of people who received an 8 on the happiness scale, we can find this information directly from the table. The valid percent for the score of 8 is given as 18.5%, indicating that 18.5% of the participants received a score of 8.

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The dwarf planet Eris orbits the Sun every 557 years. The average distance (semimajor axis) from the Sun is 67.7 a.u.

A line segment that passes through the center and periphery foci and terminates at the broadest points of the perimeter is known as an ellipse's main axis in geometry. The semi-major axis goes from the center via a focus and out to the periphery since it is one of the main axes. In essence, it is the radius of an orbit at its two farthest points. The radius serves as the semi-major axis for the unique instance of a circle. The semi-major axis can be compared to the long radius of an ellipse.

A line segment associated with most conic sections, such as ellipses and hyperbolas, and which forms right angles to the semi-major axis is known as the semi-minor axis (a semi-minor axis).

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The probability that a voltage surge will not damage the television when two surge protectors are arranged in parallel is 99.75%.

The probability that a voltage surge will not damage the television when two surge protectors are arranged in parallel can be calculated using the formula P(A) = 1 - P(A') where P(A) is the probability of an event occurring and P(A') is the probability of an event not occurring.

If we assume that each surge protector has a 95% chance of protecting the television from a voltage surge, then the probability of a surge protector not protecting the television is 5% or 0.05.

Using the formula, the probability that a voltage surge will not damage the television is:

P(A) = 1 - P(A')
P(A) = 1 - (0.05)(0.05)
P(A) = 1 - 0.0025
P(A) = 0.9975

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