A difference between electric and gravitational forces is that electric forces include
A) separation distance.
B) repulsive interactions.
C) the inverse-square law.
D) infinite range.
E) none of the above
Answer: B
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How much work is required to increase the velocity of a 4 kg car from rest to 5 m/sec?
a. 10 b. 20 c. 50 d. 100 e. 200 Joules
Which of the following is ordered correctly from smallest to largest?
a. arc minute, arc second, degree b. degree, arc minute, arc second c. arc minute, degree, arc second d. arc second, arc minute, degree
Suppose we have a box containing an electron with the lowest possible energy E1. Imagine that we slowly squeeze the box, making its length L smaller. What will happen to the electron’s energy? The electron’s energy will
A. Increase. B. Decrease. C. Remain the same.
The lungs occupy a small volume but have a very large surface area
What will be an ideal response?