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Agata [3.3K]
3 years ago
10

For a Van de Graaff generator to acquire a charge on its surface what must happen?

Physics
1 answer:
horsena [70]3 years ago
3 0
The answer is D. A Van de Graaff generator is an electrostatic generator which utilizes a moving belt to aggregate an electric charge on an empty metal globe on the highest point of a protected section, making high electric possibilities. It delivers high voltage coordinate current (DC) power at low current levels.
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What component is used to measure the current in a circuit
iragen [17]
Measuring current. A device called an ammeter is used to measure current. Some types of ammeter have a pointer on a dial, but most have a digital readout. To measure the current flowing through a component in a circuit, you must connect the ammeter in series with it.
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3 years ago
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A ball with a horizontal speed of 1.0m/s rolls off a bench 2.0 m high. (a) how long will the ball take to reach the floor? (b) h
bixtya [17]
The motion of the ball is a composition of two motions:
- on the x (horizontal) axis, it is a uniform motion with initial velocity v_x = 1.0 m/s
- on the y (vertical) axis, it is a uniformly accelerated motion with acceleration g= 9.81 m/s^2 

(a) to solve this part, we just analyze the motion on the vertical axis. The law of motion here is
y(t) = h - \frac{1}{2} gt^2
By requiring y(t)=0, we find the time t at which the ball reaches the floor:
h- \frac{1}{2}gt^2=0
t= \sqrt{ \frac{2h}{g} }= \sqrt{ \frac{2\cdot 2.0 m}{9.81 m/s^2} }=0.64 s

(b) for this part, we can analyze only the motion on the horizontal axis. To find how far the ball will land, we must calculate the distance covered on the x-axis, x(t), when the ball reaches the ground (so, after a time t=0.64 s):
x(t) = v_x t = (1.0 m/s)(0.64 s)=0.64 m
4 0
3 years ago
What do I do if someone is choking me with both of their hands, inside of the classroom and the teacher isn't around? How do I g
guajiro [1.7K]

Answer:

If you are laying down then nee them in the X.

If you are standing up you gan take them by surprise and give them a hook punch.

Explanation:

Self defenc is very important.

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3 years ago
Two boys wearing roller skates are standing on a smooth surface with the palms of their hands touching and their arms bent, as s
vlada-n [284]

Boy X and Boy Y both move backward in opposite directions.
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2 years ago
Students who embrace an innate mindset might view their poor performance in math as inevitable or beyond their control
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Answer:

True

Explanation:

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3 years ago
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