A 500.-kilogram roller coaster starts from rest at the top of an 80.0-meter hill. What is its speed at the bottom of this hill?

Describe the similarities and differences between the plants seen in boreal forest and desert

In which of these samples do the molecules most likely have the most kinetic energy? solid ice at - 5°C ice water at 0°C liquid water at 98°C water vapor at 150°C

The following figures show several stars found in the disk and halo of the milky way galaxy. rank the stars based on their current age, from oldest to youngest.

If an ocean wave has a frequency of 2 waves/s and a speed of 4 m/s, what is its wavelength? Enter the answer

Suppose you are in a spaceship traveling at 99% of the speed of light past a long, narrow space station. Your direction of travel is parallel to the length of the station.

Sound waves move through some liquid at a speed of 1500 m/s. If the wavelength is 3 m, what is the frequency of the wave?

What is the wavelength of radar waves with the frequency of 6.0 x 10 ^10 Hz?

a machine is required to produce and output force of 600 newtons. if the machine has a mechanical advantage of 6, what input force must be applied?

Small air bubbles rise slowly while big bubbles rise rapidly through the liquid. why?

Photosynthesis and respiration are important because they produce or breakdown food to release energy.