What is a ion in science?

You replace a 40 W incandescent lightbulb with an 8 W LED bulb. If you leave your lights on 24 hours a day, how much energy are you saving each day by replacing this bulb?

Galileo's pendulum theory stated that the time taken to swing through one complete cycle of a pendulum depends on what?

1. Describe three ways that the transverse waves of the electromagnetic spectrum are used in medicine.

Poise under pressure, dealing with adversity, and self-esteem are all parts of which type of health? A. emotional health B. mental heal C. physical health D. social health

A cyclist and bike have a combined weight mass of 99 kg. Show that the combined mass weight is 990N

Calculate the maximum acceleration of a car that is heading up a 4º slope (one that makes an angle of 4º with the horizontal) under the following road conditions.

The two main parts of a wave are the a. swell and whitecap. c. crest and trough. b. wavelength and wave height. d. rise and dip.

A block of mass m=16.8 kg is sliding on a surface with initial velocity v=23.2 m/s. The block has a coefficient of kinetic friction μk = 0.426 with respect to the surface and is being pushed by a force of magnitude F=86.

Two children are pulling and pushing a 30.0 kg sled. The child pulling the sled is exerting a force of 12.0 N at a 45o angle. The child pushing the sled is exerting a horizontal a force of 8.00 N. There is a force of friction of 5.00 N.

Describe what a planetesimal is. Is it related to a protoplanet?