What would be three forces acting on a roller coaster? I have gravity, air resistance, but I can't think of the third.

The part of the ear with sound waves compressions and rarefactions cause the eardrum to vibrate Is the

A snail can move approximately 0.30 meters per minute. what distance can the snail cover in 15 minutes?

The speedometer of your car measures average speed?

The earth takes 1 year to revolve around the sun at 1 A. U. distance (an astronomical unit = 93,000,000 miles). If a planet were 4 A. U. from the sun, how many years would it take to make 1 orbit?

A barrel of oil is exactly 42 gal. how many liters of oil are in a barrel

Which features involve compression? Select the three correct answers. A. Reverse faults B. Anticlines C. Folded mountains D. Normal faults E. Monoclines

You place a cup of 210 degrees F coffee on a table in a room that is 68 degrees F, and 10 minutes later, it is 200 degrees F. Approximately how long will it be before the coffee is 180 degrees F? Use Newton's law of cooling:

What change occurs to the mass of an object when an unbalanced force is applied to it? A. The mass increases. B. The mass decreases. C. The mass remains the same. D. The mass reduces to zero. E. The mass changes by an indeterminate amount.

The equilibrium price will rise, but equilibrium quantity may increase, decrease, or stay the same if a. demand increases and supply decreases. b. demand increases and supply increases. c. demand decreases and supply increases. d.

The nearest large galaxy to our own is about 2.5 million light-years away. how many meters is that