Other Physics Answers

A stone is thrown into the air with initial speed of 3m/s from the ground.

What time does it hit the ground? (Neglect air resistance)

what is the calculation and errors of simple pendulum expriment ?

what is the calculation and errors of simple pendulum expriment ?

A student eat a dinner containing 8.0×10^6J of energy and wishes to lift an object in a gym of 60kg .How mang times will he lift this object to expand this much energy if he lift this object in a distance of 2.0m

At a certain point on Earth, the horizontal component of Earth’s magnetic field is 2.5 × 10-5 T due to north. An electron moves eastward with just the right speed, so the magnetic force on it balances its weight. Find the speed of the electron.

What is the magnitude of the field if a charge of 10 C travelling at a speed of 8 × 106 m/s in a direction perpendicular to a magnetic field experiences a magnetic force of 8.7 × 10-3 N?

A 125 m long transmission wire is stretched between two vertical posts. It carries a current of 35.0 A and experiences a force of 0.25 N due to Earth's magnetic field. What is the value of Earth's magnetic field at the location of the wire if the wire is 60° with it?

A-6nC particle is moving at 4.0 x 10⁴ m/s along the positive z-axis. It passes a region indeflected where there is uniform electric and magnetic fields. The electric field is 5.75 x 10⁵ N/C along the negative x-axis. What is the magnitude and direction of the magnetic field?

You use 8,000 joules of energy climbing a hill. The climb takes you 50 seconds. How much power did you exert?

A particle starts from rest and moves in a straight line with constant acceleration passing two points A and B, which are 100m apart in 15s. If the velocity of the particle at B is three times its velocity at A, find: (a) the velocity of the particle at A; (b) its acceleration; (c) the distance of A from the starting point.