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A neutron star is composed of neutrons and has a density that is approximately the same as that of a nucleus (about 2.3 x 1017 kg/m3). What is the radius of a neutron star whose mass is 0.93 times the mass of the sun (M = 1.99 x 1030 kg)?
One ball of mass 575 g traveling 3.50 m/s to the right collides with another ball of mass 425 g that is initially at rest. What is the velocity of the heavier ball after collision
A parallel-plate capacitor with area 0.100 m2 and plate separation of 4.00 mm is connected to a 21.00 V battery. Find the magnitude of the charge density on each plate
Two identical small insulating balls are suspended by separate 0.208m threads that are attached to a common point on the ceiling. Determine the charge on each ball
Two cars collide at an intersection. Car A, with a mass of 2000 kg , is going from west to east, while car B, of mass 1400 kg , is going from north to south at 13.0 m}/ s. How fast were the enmeshed cars moving just after the collision
A 2.0-kg block slides down a fixed, rough curved track. The block has a speed of 5.0 m/s after its height above a horizontal surface has decreased by 2.0 m. What is the change in mechanical energy of the block
The force on a point charge, q, located along the z axis due to a uniformly charged ring of total charge Q, Find the points along the z axis where the force is maximum
A cannon is fired from the ground 60 degrees above thehorizontal, then flies over level ground. The muzzle speed is.98km/s. Neglect air resistance, what projectile will travelwhat horizontal distance before striking the ground?
150g of steam at 100C (373K) is injected into a container containing 250g of ice and 150g water both at 0C (273K). What is the change in entropy of the environment
Accelerating charges radiate electromagnetic waves. Calculate the wavelength of radiation produced by a proton in a cyclotron with a radius of 0.500 m
A spacecraft is traveling with a velocity of V0x=5480m/s along the+x direction. Two engines are turned on for a time of 842s.One engine gives the spacecraft an acceleration in the +x directionof ax=1.20m/s^2, while the other gives it an acceleration ..
A 3100 kg cannon is mounted so that it can recoil only in the horizontal direction. Calculate the magnitude of its recoil velocity when it fires a 14.0 kg shell at 480 m/s at an angle of 20.0° above the horizontal
In attempting to pass the puck to a teammate, a hockey player gives it an initial speed of 2.47 m/s. However, this speed is inadequate to compensate for the kinetic friction between the puck and the ice.
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