Q:1

Heat has the same units as:

Temperature

Work

Energy/time

Heat capacity

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Q:2

A 5 . 0-C charge is 10 m from a âˆ’ 2 . 0-C charge. The electrostatic force on the positive charge is:

9 . 0 Ã— 10 8 N toward the negative charge

9 . 0 Ã— 10 8 N away from the negative charge

9 . 0 Ã— 10 9 N toward the negative charge

9 . 0 Ã— 10 9 N away from the negative charge

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Q:3

Units of a magnetic field might be:

C Â· m/s

C Â· s/m

C/kg

kg/C Â· s

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Q:4

Iron, rather than copper, is used in the core of transformers because iron:

Can withstand a higher temperature

Has a greater resistivity

Has a very high permeability

Makes a good permanent magnet

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Q:5

A 3 . 00-g bullet traveling horizontally at 400 m / s hits a 3 . 00-kg wooden block, which is initially at rest on a smooth horizontal table. The bullet buries itself in the block without passing through. The speed of the block after the collision is:

1 . 33 m / s

0 . 40 m / s

12 . 0m / s

40 . 0m / s

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Q:1

Heat has the same units as:

4/5

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Q:2

A 5 . 0-C charge is 10 m from a âˆ’ 2 . 0-C charge. The electrostatic force on the positive charge is:

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Question 3 of 5

Q:3

Units of a magnetic field might be:

2/5

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Q:4

Iron, rather than copper, is used in the core of transformers because iron:

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Question 5 of 5

Q:5

A 3 . 00-g bullet traveling horizontally at 400 m / s hits a 3 . 00-kg wooden block, which is initially at rest on a smooth horizontal table. The bullet buries itself in the block without passing through. The speed of the block after the collision is:

0/5