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drek231 [11]
2 years ago
7

You rub a rod of glass with a cotton cloth, then dip the cloth into a Faraday pail like we will be using in lab. Will a charge s

ensor connected to the pail give a negative reading, or a positive reading or will it read essentially zero?
Physics
1 answer:
Amiraneli [1.4K]2 years ago
4 0

Answer:

negative charge

Explanation:

As the glass rod is rubbed with the cotton cloth, then the glass rod becomes positively charged and the cotton cloth becomes negatively charged.

There is a tendency to lose the electrons by the glass rod and to grab the electrons by the cotton cloth.

So, the sensor shows negative charge.

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Power = Iω (constant) as they are connected together, since effort axle has large radius than resistance axle, so moment of inertia of effort axle is also more as compared to resistance axle, so angular speed of effort axle is less than the resistance axle. So answer is B. resistance axle  will have more angular speed as its moment of inertia is less for the same power.
8 0
3 years ago
A ball is dropped from the top of a building.After 2 seconds, it’s velocity is measured to be 19.6 m/s. Calculate the accelerati
zlopas [31]

Answer:

acceleration, a = 9.8 m/s²

Explanation:

'A ball is dropped from the top of a building' indicates that the initial velocity of the ball is zero.

u = 0 m/s

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t = 2s, v = 19.6 m/s

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v = u + at

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a = 9.8 m/s²

6 0
3 years ago
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A simple pendulum consists of a mass M attached to a string oflength L andnegligible mass. For this system, when undergoing smal
PilotLPTM [1.2K]

The frequency of the pendulum is independent of the mass on the end. (c)

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8 0
3 years ago
A car accelerates at a rate of 13m/s^2[S]. If the car's initial velocity is 120km/h[N]. What will its final velocity be in m/s,
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Answer:

the final velocity of the car is 59.33 m/s [N]

Explanation:

Given;

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initial velocity of the car, u = 120 km/h = 33.33 m/s

duration of the car motion, t = 2 s

The final velocity of the car in the same direction is calculated as follows;

v = u + at

where;

v is the final velocity of the car

v = 33.33 + (13 x 2)

v = 59.33 m/s [N]

Therefore, the final velocity of the car is 59.33 m/s [N]

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2 years ago
If the force on a spring is 2 N and it stretched 0.5 m, what is the spring constant?
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<h2>It solved by the Hooke's law states F=kx</h2>

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