Jenny is sitting on a sled on the side of a hill inclined at 15°. What force is required to keep the sled from sliding down the

hill if the combined weight of Jenny and the sled is 90 pounds?

Which substance has the highest density at room temperature?

If state troopers were instructed to write a ticket for any motorist going 1 mph over the speed limit, one could argue that this department was operating under what style of policing?

Why are jovian planets so much larger than terrestrial planets?

A 35-kg boy is riding an 18-kg bicycle down a path. The bicycle is moving at 11 m/s.

Fusion is the change of phase from: O gas to liquid O liquid to solid O liquid to gas O solid to liquid

One watt is equal to which of these values? 1 joule/hour 1 joule-hour 1 joule/second 1 joule-second

What are some of the benefits of learned optimism that have been found in research? O A. Fewer health problems O O B. All of these C. Making more money O D. A lower divorce rate

Katie runs 6 km in 0.6 hour, then 5 km in 0.5 hour. Katie's average speed is __ per hour.

A derived unit is a combination of fundamental units. Which of the following is an example of a derived unit? a) centimeter (used to measure distance) b) gram (used to measure mass) c) cubic centimeter (used to measure volume)

Technician A says that a heater core leak can be the result of the coolant wearing a hole through the core. Technician B says that a core leak can be caused by chemical action eating a hole through the core. Who is correct?