Answer the following statement(s) true (T) or false (F)
1. Figure N1.6 shows the acceleration for an object moving clockwise around the circle. If the object moves counterclockwise around the circle, its acceleration points outward instead of inward.
1. FALSE
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An inventor tries to sell you his new heat engine that takes in 40 J of heat at 87°C on each cycle, expels 30 J at 27°C, and does 10 J of work. Would it be wise to invest in this engine? Back up your conclusion with numerical calculations
What will be an ideal response?
On the Kelvin scale the temperature is proportional to the average kinetic energy of the atoms or molecules whose temperature is being measured
a. True b. False Indicate whether the statement is true or false
What did Becquerel discover about uranium?
a. That some uranium salts fluoresced in sunlight. b. That all uranium salts fluoresced in sunlight. c. That X rays striking some uranium salts produced visible light. d. That fluorescent light can pass right through the light proof covering used then for photographic plates. e. That all uranium salts would expose photographic film with or without exposure to light.
An Earth satellite in close orbit circles Earth in about an hour and a half. How long would a satellite located as far away as the Moon take to orbit Earth?
A) the same hour and a half B) less than an hour and a half C) about 28 days D) need more information E) none of the above