Suppose Galileo dropped a lead ball (100 kilograms) and a glass ball (1 kilogram) from the leading tower of pisa. Which one hit the ground first?

A hollow metal ball hangs on a long massless string. The device is driven by a small side-to-side oscillator with a constant very small amplitude and an adjustable frequency. The driver begins to oscillate at a very low frequency.

A laser pulse with wavelength 520 nm contains 4.40 mj of energy. how many photons are in the laser pulse?

A large box weighing 700 N is resting on the ground on an area of 1 m2. How much pressure is the box exerting on the ground?

A boat weighing 9.0 * 102 newtons requires a horizontal force of 6.0 * 102 newtons to move it across the water at 1.5 * 101 meters per second. The boat's engine must provide energy at the rate of

Two objects, X and Y, move toward one another and eventually collide. Object X has a mass of 2M and is moving at a speed of 2v0 to the right before the collision.

According to the article, data from scientific observations fulfill what three functions

What are the three ways that an object can accelerate

What do you notice about earths axis during the winter solstice

IS IT right to the left a b c d

A projectile was launched horizontally with a velocity of 468m/s, 1.86m above the ground how long did it take the projectile to hit the ground