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To determine the muzzle velocity of a bullet fired from a rifle, you shoot the 3.57-g bullet into a 2.47-kg wooden block. The block is suspended by wires from the ceiling and is initially at rest. After the bullet is embedded in the block, the block swings up to a maximum height of 0.773 cm above its initial position. What is the velocity of the bullet on leaving the gun's barrel?
A wire 2.45 m long carries a current of 19.2 A and makes an angle of 48.8° with a uniform magnetic field of magnitude B = 1.18 T. Calculate the magnetic force on the wire
At what distance along the central axis of a ring of radius 1.8 cm and uniform charge 66 C is the magnitude of the electric field maximum.
a flat mirror and a wall meet at a 45 degree angle. light strikes the mirror 10 meters from the corner at an angle of incidence of 45 degrees
A 3.0 m tall, 60 cm diameter concrete column supports a 205,000 kg load. By how much is the column compressed
Argon is a monatomic gas whose atomic mass is 39.9 u. The temperature of eight grams of argon is raised by 71 K under conditions of constant pressure. how much heat is required
An old oaken bucket of mass 6.75 kg hangs in a well at the end of a rope. The rope passes over a frictionless pulley at the top of the well, How much work does gravity do on the bucket
The solid fuel of a 300.kg rocket travelling at 1.64x10^4 km/h is ignited to correct the rocket trajectory in mid-flight to Mars. what is the acceleration of the rocket (in m/s^2) at the start of this burn
One end of a 5.0 m long light string is attached to the ceiling and a small rock of mass m is attached to the other end of the string. What is the mass m of the rock
A drum major twirls a 94 cm-long, 430g baton about its center of mass at 150 rpm. What is the baton's rotational kinetic energy
A radar for tracking aircraft broadcasts a 18.2 GHz microwave beam from a 1.03 m diameter circular radar antenna. What is the diameter (in m) of the radar beam at a distance of 25.0 km
The emissivity of the human skin is 97.0 percent. Use 35.0 °C for the skin temperature and approximate the human body by a rectangular block with a height of 1.58 m, Calculate the power emitted by the human body
X rays of wavelength 0.0196 nm are directed in the positive direction of an x axis onto a target containing loosely bound electrons. determine the corresponding change in photon energy
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