Other Physics Answers

Consider a solenoid with an air core, with 3000 loops, with a measure of 70 cm, and with a diameter of 3 cm. If a 6 A current is sent through it, how much is the value of the magnetic formed within it?

9. A ball is dropped from a window and hits the ground with a speed of 25 ft/s. How high above the ground is the window?

What is the magnitude of an electric field that exerts a force of 5.0×10^-4N on a charge of 1.0 uC?

A long jumper leaves the ground at an angle of 20.0° to the horizontal and at a speed of 11.0 m/s.

a. How long does it take for him to reach maximum height? b. What is the maximum height?

c. How far does he jump? (Assume his motion is equivalent to that of a particle, disregarding the motion of his arms and legs.)

A bartender slides a beer mug at 1.50 m/s toward a customer at the end of a frictionless bar that is 1.20 m tall. The customer makes a grab for the mug and misses, and the mug sails off the end of the bar.

a. How far away from the end of the bar does the mug hit the floor?

b. What are the speed and direction of the mug at impact?

A boy on top of a hill thrown a stone with an initial velocity of 100ft/sec at an inclination of 60° with the horizontal. If the stone has travelled a distance on 400ft from the base of the hill, how high is the hill?

A long jumper leaves the ground at an angle of 20.0° to the horizontal and at a speed of 11.0 m/s.

a. How long does it take for him to reach maximum height? b. What is the maximum height?

c. How far does he jump? (Assume his motion is equivalent to that of a particle, disregarding the motion of his arms and legs.)

A bartender slides a beer mug at 1.50 m/s toward a customer at the end of a frictionless bar that is 1.20 m tall. The customer makes a grab for the mug and misses, and the mug sails off the end of the bar.

a. How far away from the end of the bar does the mug hit the floor?

b. What are the speed and direction of the mug at impact?

A boy on top of a hill thrown a stone with an initial velocity of 100ft/sec at an inclination of 60° with the horizontal. If the stone has travelled a distance on 400ft from the base of the hill, how high is the hill?

The angular acceleration of a wheel is α = 9.0t⁴ – 5.0t², with α

 in radians per second-squared and t in seconds. At time t = 0, the wheel has an angular velocity of +7 rad/s and an angular position of +5 rad. Write expressions for (a) the angular velocity (rad/s) and (b) the angular position (rad) as functions of time (s).

The angular position of a point on a rotating wheel is given by θ = 3.04 + 4.83t² + 2.99t³, where θ is in radians and t is in seconds. At t = 0, what are (a) the point's angular position and (b) its angular velocity? (c) What is its angular velocity at t = 7.43 s? (d) Calculate its angular acceleration at t = 1.12 s. (e) Is its angular acceleration constant?

A stone is thrown straight upward with a velocity of 30 m/s. What was its maximum height?, b) What is the time taken to reach the maximum height?, c) What is the velocity of the stone when it is 60 m from the ground? (Assume the ground as the initial frame of reference)

Two conducting plates with a length of 1 m and a width of 0.5 m has polyethylene between them. What is the capacitance if the capacitor is 1 m high?

Find the magnitude of the charge if it has a Voltage of 13 V with a distance of 25 mm