If atoms are made of smaller parts, why are they considered the basic unit of matter

The frequency of the George Washington Bridge is 2.05 Hz. What is its period?

A rock dropped from a 20 meter bridge falls into the river below. How long did it take to reach the water? What velocity did it hit the water with.

A motorcyclist sees a branch in the road, and hits the brakes, slowing down at -6.42 m/s2. If it takes him 2.85 s to stop, what was his starting velocity? (Unit = m/s)

Protons have a blank change

An astronaut on a strange planet has a mass of 80 kg and a weight of 240 n. what is the value of the acceleration due to gravity on this planet?

g The magnetic force on a charged particle A. depends on the sign of the charge on the particle. B. depends on the velocity of the particle. C. depends on the magnetic field at the particle's instantaneous position. D.

How fast must a 1000 kg car be moving to have a kinetic energy of 1.0 kWh

Which of the following is used to measure weight? Newtons Liters Kilograms Meters

Intravenous infusions are often made under gravity. At what height should the bottle be placed so the liquid pressure is 700 mm-H2O?

What conditions are required for nuclear fusion that prevent it from being used to generate electric energy?