Calculate the frequency in hertz of an x-ray beam with a wavelength of 2.65

What is a US unit for energy?

A 20.5 kg ball moving at 38.5 m/s on a horizontal, frictionless surface runs into a light spring of force constant 5.15 N/cm. Use the work-energy theorem to find the maximum compression (in m) of the spring.

How many excess electrons are on a ball with a charge of - 1.4944 10-16 C?

Orbit is gravity pulling an object into a curved path as it attempts to fly off in a straight line. true or false

Buckets and a Pulley Two buckets of sand hang from opposite ends of a rope that passes over an ideal pulley. One bucket is full and weighs 120 N; the other bucket is only partly filled and weighs 70 N.

A hydraulic lift is used to lift a heavy box that is pushing down on a 1.5-m2 piston with a force of 1,700 N. What force needs to be exerted on a 0.12-m2 piston to lift the box?

Rauol's friend Johnny sets out from his house in the city. His displacement is 900 m 80° North of west. What is the x component of his displacement vector?

What is the relationship between gravity and mass? What is the relationship between gravity and distance?

A person performs 300 j of work over the course of 60 seconds how much power they did required

If you have a 90 V power source with a 30-Ω and 60-Ω resistor in series, what is the voltage drop over the 60-Ω resistor? 30 V 2 V 60 V 90 V