What are the two primary energy transfer processes?
A. Work and heat
B. Nuclear and heat
C. Work and nuclear
D. Heat and light
E. Energy cannot be transferred
Ans: A. Work and heat
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Where are open clusters found?
A.) No stars are forming in the galaxy today. B.) In the halo C.) In the disk. D.) Only around the Sun. E.) B and C.
In what way is Pluto more like a comet than a planet?
A) It sometimes enters the inner solar system. B) It is made mostly of rock and ice. C) It has a long tail. It has a moon.
Which of the following would violate the law of charge conservation?
a. A neutron, which has zero charge, becoming an electron and a proton. b. A plastic rod becoming charged by gaining electrons from the fur rubbed against it. c. A glass rod becoming positively charged by being rubbed with silk. d. An electroscope losing its charge by being grounded. e. An electron becoming a positron which has the same mass as an electron and a positive charge of the same magnitude.
A 600-kg car is going over a curve with a radius of 120 m that is banked at an angle of 25° with a speed of 30.0 m/s. The coefficient of static friction between the car and the road is 0.30. What is the normal force exerted by the road on the car?
A) 1590 N B) 3430 N C) 3620 N D) 7240 N E) 5330 N