A golf ball of mass 0.050 kg is at rest on the tee. Just after being struck, it has a velocity of 102 m/s. If the club and ball were in contact for what is the average force exerted on the ball by the club?
A) 6.3 kN
B) 7.1 kN
C) 5.5 kN
D) 4.9 kN
A
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Which of the following is not a characteristic of the stars of the disk component of our galaxy?
a. circular orbits b. randomly inclined orbits c. higher metal abundance d. young stars e. star-formation regions
What is true of the Moon's orbital and rotational periods?
A) The rotational period is longer. B) The orbital period is longer. C) The rotational period varies with the Moon's phase. D) They are equal. E) The orbital period is greatest at full moon.
How much heat is required to raise the temperature of 2 moles of an ideal monatomic gas by 10 C° at constant volume?
A) 249 J B) 416 J C) 208 J D) 200 J E) 125 J
When a ferromagnetic material that has been magnetized is brought to a temperature greater than the Curie temperature, what happens to its residual magnetism
a. Nothing happens to the residual magnetism. b. The residual magnetism disappears. c. The residual magnetism reaches it's highest value. d. All the magnetic domains causing magnetism become a single domain. e. The material of the magnet melts causing currents that are magnetic.