Consider a situation where you carry a 20-N box up a flight of stairs, raising its elevation by 5 m.The increase of potential energy of the box is 100 J
a. True
b. False
Indicate whether the statement is true or false
True
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Banked Curves: Two cars go around a banked curve at the proper speed for the banking angle. One car has tires with excellent traction, while the other car has bald slippery tires. Which of these cars is more likely to slide on the pavement as it goes around the curve?
A. the car with the new tires B. the car with the bald tires C. Neither car will slide. D. It depends on if the pavement is wet or dry.
State three properties of conductors in static equilibrium
What will be an ideal response?
A parallel plate capacitor is connected to a battery and charged to voltage V. Leah says that the charge on the plates will decrease if the distance between the plates is increased while they are still connected to the battery. Gertie says that the charge will remain the same. Which one, if either, is correct, and why? a. Gertie, because the maximum voltage is determined by the battery
b. Gertie, because the capacitance of the capacitor does not change. c. Leah, because the capacitance decreases when the plate separation is increased. d. Leah, because the capacitance increases when the plate separation is increased. e. Neither, because the charge increases when the plate separation is increased.
Which of the following claims can be tested by scientific means?
a. the final thought of Abraham Lincoln were about the fate of his country b. God exists c. blue is the best color for walls d. people born when the sun is in constellation of Leo are more financially successful than other people