a golf ball of mass 50g travels at 70 m/s hits a persons head (stopping in 0.05 second), what is the impact force

Name two objects that have a low density.

The kinetic energy of a go-cart with a mass of 150 kilograms and a speed of 20.0 m/s is:

In an experiment all participants receive a treatment but those in the control group receive a false treatment which is called a

If the wavelength of the red line of hydrogen coming from a galaxy is 654.3 nanometers instead of the normal 656.

Astronomers beleive that there is no planet in the asteroid belt region because a. collisions in the asteroid belt break apart objects instead of letting these objects grow through accretion. b.

A satellite has a mass of 6124 kg and is in a circular orbit 4.64 * 105 m above the surface of a planet. the period of the orbit is 1.7 hours. the radius of the planet is 4.42 * 106 m.

A weightlifter Lifes a 100 kg barbell from the floor to a height of 2.00 m in 1.50 seconds. find the power he generates (use G=10 N/KG)

Use 3rd law to explain how a fish swims through water. Identify the force pairs and draw a diagram.

A sample of dna contains 1000 guanine bases how cytosine bases does it contain

What is the name of an ionic compound that consists of lithium ions (Lit) and iodide ions (I) ?