A helicopter hovers 200 meters over the ground and releases a relief packet. How much time does it take for the food packet to reach the ground?

How much energy (in kj) do 3.0 moles of photons, all with a wavelength of 665 nm, contain?

Measure the width of a sheet of a standard-sized (8.5in x 11.0in) loose-leaf notebook paper. Make the measurement in centimeters and Express the answer with the correct number of significant figures.

What type of rock is formed from the weathered remains of other rocks?

Moving company uses a machine to raise a 900 Newton refrigerator to the second floor of a building machine consists of a single pulley with a mechanical advantage of 1 how many newtons of input force will it take to raise the refrigerator

A toaster oven has a power rating of 1200W. If you cook a pizza in it for 1 hour at 450°F, how many joules of electrical energy are converted into heat by the toaster oven?

Six light bulbs are connected in series with a 9.0 volt battery. What is the voltage across each bulb?

Can an object travel at the speed of light? Why or why not?

It's a hot and sunny day and you decide to go for a drive. When you open your car door, it's a lot hotter than outside. Why is that

Which compound is composed of oppositely charged ions

Sara, who weighs 66 kg, is on a guilt trip after eating a 788-Calorie (788 kcal) breakfast of pancakes loaded with fruits, cream, and syrup. She decides to work out before going to her weekly weight-watchers' meeting.