Which of the following does the intensity of synchrotron radiation NOT depend on?
A) mass of the electron
B) temperature
C) speed of electrons
D) frequency of radiation
E) strength of the magnetic field
B
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Free Fall: An astronaut stands by the rim of a crater on the Moon, where the acceleration of gravity is 1.62 m/s2 and there is no air. To determine the depth of the crater, she drops a rock and measures the time it takes for it to hit the bottom. If the time is 6.3 s, what is the depth of the crater?
A. 10 m B. 14 m C. 26 m D. 32 m E. 38 m
Mike performed 5 J of work in 10 secs. Joe did 3 J of work in 5 secs. Who produced the greater power?
a) Mike produced more power b) Joe produced more power c) both produced the same amount of power
A force of stretches a very light ideal spring from equilibrium. What is the force constant (spring constant) of the spring?
A) 41 N/m B) 22 N/m C) 34 N/m D) 46 N/m
A race car moving quickly around a track collides with a mosquito, which splatters on the car's windshield. Which object experiences a greater magnitude impact force?
1.Both experience the same force. 2.One cannot tell, you need to know the speeds of the mosquito and the race car. 3.the mosquito 4.the race car