SAT Physics Practice Questions 2 & answer key

 1)one planet makes rotation around the sun every 628 days ,find the angular velocity of this planet ?

 A. $10  rad/day$
 B. $1  rad/day$
 C. $1.10^{-1} rad/day$
 D. $1.10^{-2} rad/day$

2) we add 8380 j of heat to  2kg of water at temperature of 30 C,find the temperature of water after this add?

A. 31 ºC
B. 36 ºC
C.  40 ºC
D.  41 ºC


3)A charge of 2 C moves with the velocity of 10 m/s  in  a magnetic field of 0.2 T ,the angle $\theta$ between velocity vector an magnetic field vector is $\theta=\pi/2$ .
find the value of magnetic force ?


A.  1 N
B.  2 N
C.  3 N
D. 4 N


4) A metal wire of lenght of 2 m and section area 10 $mm^{2}$ ,and resistivity equal$10^{-7}A.m$,connected to a battrey with potential of 5 V.
find the value of the current in the wire?


A. 100 A
B. 250 A
C. 300 A
D. 450 A


Answer key :


1.D
2.A
3.D
4.B