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An object is observed moving at 0.60 c when it explodes. In the reference frame of the object, the explosion disburses small fragments equally in all directions at speed 0.20 c. From the reference frame of the observer, the explosion appears to disburse all the fragments into a cone. Decide the angle the edge of the cone makes by the original direction of travel.
The collision between a hammer and a nail can be considered to be approximately elastic. Estimate the kinetic energy acquired by a 11-g nail
Light strikes a sodium surface, causing photoelectric emission. The stopping potential for the ejected electrons is 3.2 V, What is the wavelength of the incident light
A 1.2m -long, 900g rope pulls a 9.0kg block of ice across a horizontal, frictionless surface. The block accelerates at 1.0m/s^2, How much force pulls forward on the block of ice
The electric potential difference across the cell membrane of ahuman cell is 0.080 V, with the higher potential being outsidethe cell. In one cellular process a sodium ion Na+, with charge+e, is "pumped" through a channel in the membrane to beejected..
A ship moves through the water with two forces acting on it. One is a 1700 Newton forward push by the water on the propeller, Find its velocity is at the end of that time
A boeling mass M and radius R is thrown so that theinstant it touches the floor it is moving horizontally with speedV=5m/s and is not rotating. find the time the ball slides
After a shipwreck, a solid steel spoon lies at the bottom of the ocean, 8.00km below the surface. What's the water pressure at that depth? Find the fractional volume change in the spoon due to compression forces.
A pendulum has a length of 0.67 meter. Determine how long would the pendulum have to be to double the period
On the Apollo 14 mission to the moon, astronaut Alan Shepard hit a golf ball with a golf club improvised from a tool. How long was the ball in flight
A wooden dowel (cylinder) has a diameter of 2.20 cm. Determine the density of the dowel
A boat crossing a 143.0 m wide river is directed so that it will cross the river as quickly as possible. Calculate the total distance the boat will travel to reach the opposite shore
A slit 0.240mm wide is illuminated by parallel light rays with a wavelength 540nm. What is the distance on the screen from the center of the central maximum to the first minimum
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