A proton has a total energy of 2.5 × 10^?10 J. How fast is it moving? (mp = 1.67 × 10^?27 kg)

a. 0.90c
b. 0.80c
c. 0.70c
d. 0.60c
e. 0.40c


b

Physics & Space Science

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Which of the following types of electromagnetic radiation has the smallest frequency?

a. X-rays b. visible light c. radio d. gamma rays e. infrared radiation

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Impedance: What inductance must be put in series with a 100-k? resistor at 1.0-MHz for a total impedance of 150 k??

A. 18 mH B. 0.15 H C. 0.17 H D. 1.5 H

Physics & Space Science

Which of these gases is least abundant in our atmosphere?

A) hydrogen B) nitrogen C) argon D) oxygen E) carbon dioxide

Physics & Space Science

A block is launched up an incline plane. After going up the plane, it slides back down to its starting position. The coefficient of friction between the block and the plane is 0.3 . The speed of the block when it reaches the starting position on the trip down:

a. is the same as the launching speed. b. is less than the launching speed. c. is more than the launching speed. d. cannot be compared to the launch speed with the information given.

Physics & Space Science