The average length of a solar day is
A) 23 hours 56 minutes.
B) 24 hours.
C) 365.25 days.
D) 12 years.
E) 26,000 years.
B
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Answer the following statement(s) true (T) or false (F)
1. Since the laws of physics are the same in every inertial reference frame, there is no meaningful physical distinction between an inertial frame at rest and one moving at a constant velocity 2. Since the laws of physics are the same in every reference frame, an object must have the same kinetic energy in all inertial reference frames. 3. Since the laws of physics are the same in every inertial reference frame, an interaction between objects must be observed to conserve energy in every inertial reference frame. 4. Since the laws of physics are the same in every inertial reference frame, if you perform identical experiments in two different inertial frames, you should get exactly the same results
Two capacitors with capacitances of 2.0 and 3.6 ?F, respectively, are connected in series. The system is connected to a 40-V battery. What charge accumulates on the 2.0-?F capacitor?
a. 220 ?C b. 31 ?C c. 2 100 ?C d. 51 ?C e. 290 ?C
A projectile is thrown from the top of a building with an initial velocity of 30 m/s in the horizontal direction. If the top of the building is 30 m above the ground, how fast will the projectile be moving just before it strikes the ground?
a. 35 m/s b. 39 m/s c. 31 m/s d. 43 m/s e. 54 m/s
Work-Energy Theorem: A 10-kg dog is running with a speed of 5.0 m/s. What is the minimum work required to stop the dog in 2.40 s?
A. 50 J B. 75 J C. 100 J D. 125 J