If the collision is elastic, how many equations of constraint do we have on those quantities?
A. Zero
B. One
C. Two
D. Three
E. Four
D. Three
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To tell the difference between a neutron star and a black hole in an X-ray binary, we must find the temperature of the object
Indicate whether the statement is true or false
The lowest energy level in an atom is
a. the absolute zero temperature. b. the ground state. c. the ionization level. d. responsible for Doppler shifts. e. the energy level from which the Paschen series of hydrogen originates.
A 1500-kg car rounds an unbanked curve with a radius of 52 m at a speed of 14 m/s. What minimum coefficient of friction must exist between the road and tires to prevent the car from slipping? (g = 9.8 m/s2)
a. 0.18 c. 0.28 b. 0.30 d. 0.38
A flywheel with a moment of inertia 6.00 × 106 kg?m2 is spinning with an angular speed of 120 rev/s about a vertical axis while it sits at the north pole. The disk is turning counterclockwise when viewed from above
The disk is brought to a rest. Treat the earth as a uniform sphere with a mass 5.976 × 1024 kg and a radius 6.374 × 106 m. (a) What will be the magnitude of the change in angular momentum of the earth? (b) What will be the change in length of a day on Earth?