(c) Two electrons with equal speeds, one moving east and one moving west, collide. After the collision, the electrons move north and south with smaller speeds than they had originally. Nothing else is emitted.
A. C
B. F
B. F
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Rotational Kinetic Energy: A solid uniform ball of mass 1.0 kg and radius 1.0 cm starts from rest and rolls down a 1.0-m high ramp. There is enough friction on the ramp to prevent the ball from slipping as it rolls down.(a) What is the forward speed of the ball when it reaches the bottom of the ramp?(b) What would be the forward speed of the ball if there were no friction on the ramp?(c) Since the ball starts from the same height in both cases, why is the speed different?
What will be an ideal response?
According to Wien's displacement law, if the absolute temperature of a radiating blackbody is tripled, then the peak wavelength emitted will change by what factor?
a. 1/3 b. 1 c. 3 d. 9
A cold front traveling at an average speed of 35 km/h eastward is 280 km due west of you. Approximately how long will it be before your location experiences a sudden temperature drop?
Capacitance: If the electric field between the plates of a given air-filled capacitor is weakened by removing charge from the plates, the capacitance of that capacitor
A. increases. B. decreases. C. does not change. D. It cannot be determined from the information given.