A 20kg bike accelerates at 10 m/s2. With what force was the person padeling?

A particle with a mass of 2.3 * 10-20 kg is oscillating with simple harmonic motion with a period of 3.0 * 10-5 s and a maximum speed of 2.2 * 103 m/s. Calculate (a) the angular frequency and (b) the maximum displacement of the particle.

A cork weigh 2.5 gf in air. When tied to a sinker, the total weight is 20 gf in water. If the sinker alone weighs 25gf in water, find the density of the cork

How many black holes are there in the Andromeda galaxy?

During which type of change can the atomic number of an atom change? A. Chemical B. Physical C. Phase D. Nuclear

What is a radio wave?

In a mass spectrometer, a specific velocity can be selected from a distribution by injecting charged particles between a set of plates with a constant electric field between them and a magnetic field across them (perpendicular to the direction of

What is the force of attraction between two masses 5kg and 8kg at a distance of 60cm apart. (A) 4.5*10-9N (B) 5.6*10-9N (C) 7.4*10-9N (D) 8.0*10-9N (E) 10.5*10-9N

A 1100 kg car pushes a 1800 kg truck that has a dead battery. When the driver steps on the accelerator, the drive wheels of the car push against the ground with a force of 4500 N.

The model that describes a Sun-centered solar system is called theA. laws of motion. B. geocentric model. C. heliocentric model. D. general theory of relativity.

A truck on a straight road starts from rest, accelerating at 2.00 m/s2 until it reaches a speed of 20.0 m/s. Then the truck travels for 20.0 s at constant speed until the brakes are applied, stopping the truck in a uniform manner in an additional 5.