If a constant non—zero force is applied to an object, its velocity will certainly ________
a. change b. stop c. be zero d. be constant e. equal acceleration
a
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A force on an object is given by F(x) = ( -4.00 N/m)x + ( 2.00 N/m3)x3. What is the change in potential energy in moving from x = 1.00 m to x = 2.00 m?
A) 10.0 J B) -1.50 J C) -10.0 J D) 1.50 J E) 12.0 J
When we look at the Andromeda Galaxy tonight though our telescope, we see this galaxy
a) as it was just after the big bang b) as it was 3.2 years ago as it was when the light left this galaxy c) as it is now because light travel instantaneously d) as it was 2.5 million years ago when the light that we are seeing today left that galaxy
Suppose that large jovian planets had never formed in our solar system. Which of the following would most likely be true?
A) There would be a large empty region in our solar system between the orbit of Mars and the Kuiper belt. B) Earth would orbit much closer to the Sun. C) Neither the asteroid belt nor Oort cloud would exist. D) Earth would have suffered far fewer impacts.
200 g of ice at 0°C is dropped into a calorimeter of negligible heat capacity containing 350 g of water at 20°C. What is the temperature of the system when it reaches equilibrium? The latent heat of fusion of water is 80 cal/g
A) 0°C B) 24°C C) -13°C D) 13°C E) -24°C