An automobile moving along a straight track changes its velocity from 40 m/s to 80 m/s in a distance of 200 m. What is the (constant) acceleration of the vehicle during this time?
a. 8.0 m/s
b. 9.6 m/s
c. 12 m/s
d. 6.9 m/s
e. 0.20 m/s
C
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A 1500 W portable heater is needed to replace the heat lost through a circular window in the wall of a home that is made of a single pane of glass 0.30 cm thick. Thermal conductivity for the glass is 0.63 W/mK. The temperature inside the house is 
and outside is 
What is the radius of the window?
A. 47 cm B. 53 cm C. 27 cm D. 7.1 cm E. 84 cm
Gauss's Law: Two point charges of +5.00 ?C and +8.00 ?C are placed inside a cube having sides 0.100 m long. What is the net electric flux passing through the surface of the cube? (k = 1/4??0 = 9.0 × 109 N ? m2/C2)
A. 0.340 × 106 N m2/C B. 0.450 × 106 N m2/C C. 1.47 × 106 N m2/C D. 3.80 × 106 N m2/C E. 4.20 × 106 N m2/C
The powerful ________ Jupiter is a result of the ________ and ________ in the interior of the planet.
A. wind on; Coriolis effect; heat generated B. magnetic field of; Coriolis effect; heat generated C. magnetic field of; rapid rotation; heat generated D. wind on; rotation; excess hydrogen
Tides are approximately 24 hours apart
Indicate whether the statement is true or false