Other Physics Answers

A hammer head, with a mass of 10.0 kg, strikes a nail at a horizontal velocity of 12.2 m/s and comes to rest in a time interval of 0.004 s. Find the impulse imparted to the nail and the average force the hammer exerted on the nail?

Rich Gossage set a fastball record by hurling a 0.14 kg baseball at a speed of 46.3 m/s. What was the magnitude of the ball’s momentum as it left his hand? *

What is the mass of a bus moving at a velocity of 110 kph if it has to fully stop before an intersection if a 7000-N of force is applied on it in 15 seconds? *

A golf ball with a mass of 0.06 kg is subjected to an impulse that causes it to move with a velocity of 50 m/s. If the golf club and the ball are in contact for 5x10^-3 second, what average net force acts on the ball? 

A rectangular surface with horizontal dimensions of 4.0 cm and 5.0 cm is found in a uniform magnetic field directed at a 40° angle above the horizontal. Calculate the magnitude of the magnetic field that will yield a flux equivalent to 6.17 ✕ 10 -4 Wb.

A long straight wire carries a current of 1.0 A.

(a) At what distance from the wire is the magnitude of the magnetic field

equal to 2.5 x 10^-5 T?

(b)What is the magnitude of the magnetic force that this wire will exert on a

3.0 nC particle moving at 4.2 x 10^4 m/s perpendicular to the field at that

distance?

A 55.0 m wire carries a current of 2.25 A in a location where Earth’s

magnetic field is 4.5 x 10^-3 T. The wire experiences a force of 0.15 N. Find

the angle between the wire and the magnetic field.

an oscillating body takes 0.8 seconds to complete four cycles. What is the period, frequency, and angular frequency of the body

The Bob of a simple pendulum oscillates with an amplitude of 20 cm. If the acceleration of the Bob is - 4y, where y is the displacement, calculate the

(I) magnitude of its maximum acceleration.

(II) period of the motion

(III) magnitude of the maximum velocity

A circuit has a resistor with a resistance of 3Ω followed by three parallel branches, each holding a resistor with a resistance of 5Ω. What is the total equivalent resitance of the

circuit?