A student of physics watching the Star Wars films knows that according to the laws of physics
A. the Rebel heroes can see the flash of an explosion in space.
B. the Rebel heroes can hear the sound of an explosion in space.
C. the Rebel heroes can hear each other over their radios in space.
D. the Rebel heroes can see the flash of an explosion in space and the Rebel heroes can hear each other over their radios in space.
E. the Rebel heroes can see the flash of an explosion in space and the Rebel heroes can hear the sound of an explosion in space.
D. the Rebel heroes can see the flash of an explosion in space and the Rebel heroes can hear each other over their radios in space.
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A cylindrical tank is assembled by welding steel sections circum-ferentially. Tank diameter is 1.5 m, thickness is 20 mm, and internal pres-sure is 2.0 MPa. The maximum shear stress in the cylindrical part of the tank is approximately:
(A) 17 MPa
(B) 26 MPa
(C) 34 MPa
(D) 38 MPa
________ optics deform the shape of the mirror to compensate for the turbulence in the atmosphere and yield a close to diffraction-limited image
A) Collimating B) Parabolic C) Adaptive D) Coherent E) CCD
A proton with mass 1.67 × 10^-27 kg moves with a speed of 0.800c in an accelerator. What is its relativistic momentum? (c = 3.00 × 10^8 m/s)
a. 2.40 × 10^-19 kg×m/s c. 0.530 × 10^-19 kg×m/s b. 6.68 × 10^-19 kg×m/s d. 3.76 × 10^-19 kg×m/s
A rubber ball and a lump of clay have equal mass. They are thrown with equal speed against a wall. The ball bounces back with nearly the same speed with which it hit. The clay sticks to the wall
Which one of these objects experiences the greater momentum change? A) the ball B) the clay C) Both of them experience the same non-zero momentum change. D) Both of them experience zero momentum change.