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2 years ago

13

when an object is charged by contact, what kind of charge does the object have compared with the charge on the on the object giv

ing the charge?

1 answer:

sveta [45]2 years ago

5 0

Answer:

the charge that is given by the object is positive charge and the object which is taking the charge is negetively charged

Explanation:

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An object is placed at 1.5 m from a convex lens with a focal length of 1.0 m.

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A. Use the thin lens equation to determine the image distance from the lens. Is the correct answer because I have no idea why

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sleet_krkn [62]

Answer:

Electromagnetic waves are reflected

Explanation:

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2 years ago

A 2 kg rubber ball is thrown at a wall horizontally at 3 m/s, and bounces back the way it came at an equal speed. A 2 kg clay ba

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Answer:

THE RUBBER BALL

Explanation:

From the question we are told that

The mass of the rubber ball is $m_r = 2 \ kg$

The initial speed of the rubber ball is $u = 3 \ m/s$

The final speed at which it bounces bank $v - 3 \ m/s$

The mass of the clay ball is $m_c = 2 \ kg$

The initial speed of the clay ball is $u = 3 \ m/s$

The final speed of the clay ball is $v = 0 \ m/s$

Generally Impulse is mathematically represented as

$I = \Delta p$

where $\Delta p$ is the change in the linear momentum so

$I = m(v-u)$

For the rubber is

$I_r = 2(-3 -3)$

$I_r = -12\ kg \cdot m/s$

=> $|I_r| = 12\ kg \cdot m/s$

For the clay ball

$I_c = 2(0-3)$

$I_c = -6 \ kg\cdot \ m/s$

=> $| I_c| = 6 \ kg\cdot \ m/s$

So from the above calculation the ball with the a higher magnitude of impulse is the rubber ball

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2 years ago

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It is salt water because they are two things combined together.

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2 years ago

Read 2 more answers