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Re: Physics Questions set 3

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On 7/13/2016 1:34 PM, Sergio wrote:
>
>
> In a given process, 12 joules of heat is added to an ideal gas and the
> gas does 8 joules of work. Which of the following is true about the
> internal energy of the gas during this process?
>
>     (A) It has increased by 20 joules.
>     (B) It has increased by 4 joules.
>     (C) It has not changed.
>     (D) It has decreased by 4 joules.
>     (E) It has decreased by 20 joules.
>
>

B  12 - 8


>
> Which of the following is true of the magnetic field produced by a
> current in a long, straight wire?
>
>     (A) The field is uniform.
>     (B) The field increases in strength as the distance from the wire
> increases.
>     (C) The field lines are directed parallel to the wire, but opposite
> to the direction of the current.
>     (D) The field lines are directed radially outward from the wire.
>     (E) The field lines form circles about the wire.

A wrong 1/r decline
B wrong
C wrong
D Wrong
E correct
poorly worded stuff



>
>
>
> A ball, initially at rest at t = 0 seconds, rolls with constant
> acceleration down an inclined plane 10 meters long. If the ball rolls 1
> meter in the first 2 seconds, how far will it have rolled at t = 4 seconds?
>
>     (A) 2 m
>     (B) 3 m
>     (C) 4 m
>     (D) 5 m
>     (E) 8 m
>

A wrong
B and D wrong cause they are odd
E too far
  C must be it

(no math needed)

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Physics Questions set 3 Sergio <invalid@invalid.com> - 2016-07-13 13:34 -0500
  Re: Physics Questions set 3 Sergio <invalid@invalid.com> - 2016-07-13 15:42 -0500
  Re: Physics Questions set 3 gia meeks <invalid@invalid.com> - 2016-07-14 14:05 -0500

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