Other Physics Answers

A sikorsky freight helicopter can easily lift a 5000 kg truck. If the acceleration of the truck is 1.5 m/s2 up, what is the net force being applied by the helicopter?

a person acceleration at 9.80 m/s2 as she falls out of a plane experiences a net force of 1000 N. What is her mass?

The "human cannonball" has long been a popular and extremely dangerous circus

stunt.

A person with a mass of 45kg starts at rest and leaves the cannon with a final speed of

25m/s after a 1600N force is applied to them by the cannon. For how much time was the

force being applied to the person?

A skater glides along a circular path of radius 2.50m . If she coasts around one half of the circle, find the distance in m from the starting location

An elevator is moving up at a constant velocity of 2.50 m/s the man has a mass of 85.0 kg how large is the force exerts on the man

Suppose you have a circular coil with a radius of 7 cm that has 50 loops. The way it is oriented makes it form magnetic field lines normal to the area of the coil. If the magnetic field changed from 0.10 T to 0.75 T in 3 milliseconds, what is the average EMF induced in the coil?

Suppose you have a 70-cm solenoid having a cross-sectional area of 9 cm². This is wound with 900 turns of wire and carries a current of 3.4 A. Suppose that its core has a relative permeability of 400. What is the flux in the solenoid?

Consider a circular coil of radius 6 cm that has 70 loops. Its orientation forms magnetic field lines that are perpendicular to the area of the coil. Suppose the magnetic field changed from 0.20 T to 0.65 T in 5 milliseconds, how much average EMF is induced in the coil?

Consider a solenoid that is 50 cm long and has a cross-sectional area of 5 cm2. It is wound with 400 turns of wire, and a current of 2.3 A is supplied to it. Assume that its core has a relative permeability of 400. How much flux is in the solenoid?

A coil of wire is situated in a 0.5 T uniform magnetic field. The area of the coil is 2.0 m2. (a) What is the magnetic flux if the angle between the magnetic field and the normal to the surface of the coil is 60°? (b) After 5 s, the magnetic field is now parallel to the normal to the surface, (at 0°).