An electron has a relativistic momentum of 1.1 × 10-21 kg ? m/s. What percent of its total energy is its kinetic energy? (melectron = 9.11 ×10-31 kg, c = 3.0 × 108 m/s)
What will be an ideal response?
76%
You might also like to view...
Which of the following experiments demonstrate the particle properties of light?
A. diffraction B. interference C. photoelectric effect D. refraction
An x-ray tube produces photons down to a 0.0827 nm wavelength. What is the accelerating potential for this tube?
A. 123 kV B. 9.22 kV C. 8.00 kV D. 10.0 kV E. 15.0 kV
Suppose you place an object in front of a concave mirror. Which of the following statements must be true? (There could be more than one correct choice.)
A) The image of the object will always be smaller than the object. B) The image of the object will always be inverted. C) No matter where you place the object, a real image of the object will be formed. D) No matter where you place the object, the image of the object will always be virtual and upright. E) If you position the object between the mirror and the focal point of the mirror, its image must be upright and virtual.
Rovers sent to Mars have discovered
A) minerals in Martian rocks that can only form in liquid water. B) clear evidence that life once existed on Mars. C) Mars has more craters than previously thought. D) small pockets of liquid water lying just beneath the Martian soil.