In a certain velocity selector consisting of perpendicular electric and magnetic fields, the charged particles move toward the east, and the magnetic field is directed to the north. What direction should the electric field point?
A) downward
B) toward the west
C) toward the south
D) toward the east
E) upward
A
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When water at 4°C is heated it expands. If it is instead cooled it will
A) contracts. B) also expand. C) neither contracts nor expands.
According to Newton's second law, when the same force acts on two bodies, the body with the larger mass will have the ________ acceleration
Fill in the blank(s) with correct word
The number of protons in a nucleus equals the number of neutrons
a. True b. False Indicate whether the statement is true or false
A car is moving down a straight, steep hill. By applying the brake, the driver is able to keep the speed of the car constant. Which of the following statements is true in this situation?
A. The net acceleration is positive. B. There is a net force on the car. C. The net acceleration is negative. D. There is no net force on the car.