What is the mass of a child if the force of gravity on the child's body is 100 N?

An FM radio station broadcasts at 9.23 * 107 Hz. Given that the radio waves travel at 3.00 * 108 m/s, what is the wavelength of these waves?

In which one of the following circumstances could mechanical energy not possibly be conserved, even if friction and air resistance are absent? A car moves down a hill, its velocity continually increasing alongthe way.

A moon orbits which celestial object

If a ball is thrown vertically into the air in the presences of air resistance, would you expect the time during which it rises to be longer or shorter than the time during if falls?

When a 3.30-kg object is hung vertically on a certain light spring that obeys Hooke's law, the spring stretches 2.80 cm. If the 3.30-kg object is removed, how far will the spring stretch if a 1.50-kg block is hung on it?

What happens to the wavelength of a wave if you increase the frequency?

In a transverse wave, the particle motion is what to wave motion? A. perpendicular B. parallel

Which agent of weathering breaks down limestone statues?

A charged particle moves at 2.5 * 104 m/s at an angle of 25° to a magnetic field that has a field strength of 8.1 * 10-2 T. If the magnetic force is 7.5 * 10-2 N, what is the magnitude of the charge?

Earthquakes along the subduction zones near Sumatra and Chile are some of the strongest in the world.