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Two blocks are free to slide along the frictionless wooden track shown below. The block of mass m1 = 4.94 kg is released from the position shown, at height h = 5.00 m above the flat part of the track. Protruding from its front end is the north pole of a strong magnet, which repels the north pole of an identical magnet embedded in the back end of the block of mass m2 = 9.30 kg, initially at rest. The two blocks never touch. Calculate the maximum height to which m1 rises after the elastic collision.
A 9.59-g bullet, moving horizontally with an initial speed v0, embeds itself in a 1.45-kg pendulum bob that is initially at rest. Find the initial speed of the bullet.
Consider a series LRC circuit with R=21 ?, L=0.29 H and C=0.4 µF. The current is 14 mA amplitude at 1.6 kHz. Find the angular resonant frequency of oscillations
A runner whose mass is 55 kg accelerates from a stop to a speed of 8 m/s in 3 seconds. How much work is done on the point-particle system by this force
A piece of lead [c = 128 J/(kg·C°)] is heated from 18.0 °C to 40.1 °C. The same amount of heat is added to a piece of copper [c = 387 J/(kg·C°)]. find the final temperature Tf of the copper
A solid disk of radius R, mass 2.39 kg is spinning at angular velocity 60.6 rpm about a vertical axis. What is the mass of the second disk
A rectangular loop of wire with sides 0.20 and 0.35 m lies in a plane perpendicular to a constant magnetic field. Assuming the loop is complete, in which direction will any induced current flow
A 69.0 kg person throws a 0.0400 kg snowball forward with a ground speed of 35.0 m/s. What are the velocities of the two people after the snowball is exchanged
The work function for Tin is 4.42 eV. Ultraviolet light with \lambda =50 nm is shone upon a Tin electrode
When the wavelength of an incident radiation exceeds 560nm the emission of photoelectrons from a surface ceases. What is the stopping potential for this electrons
Two thin beams are joined end-to-end to make a single object. The left beam is 11.9 kg and 1.00 m long and the right one is 41.1 kg and 2.00 m long. What is the gravitational torque on the objects about an axis through its left end
a nonconducting rod of length L = 8.50 cm has charge -q = -4.56 fC uniformly distributed along its length. What is the linear charge density of the rod
To get back to the shuttle, the astronaut unstraps a 10-kg tool kit and throws it away with a speed of 8 m/s. In the script, the astronaut, who has a mass of 80 kg without the toolkit, survives, but is this accurate.
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