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At a crime scene, the forensic inestigator notes that 7.5-g leadbullet that was stopped in a door-frame apparently meltedcompletely on impact. Assuming the bullet was fired at roomtemperature of 20°C, what does the investigator calculate theminimum muzzle velocity of the gun was?
It makes a head on elastic collision at B with a block of mass m2 = 12.0 kg that is initially at rest. Compute the maximum height to which m1 rises after the collision. height = 5m
After landing on an unfamiliar planet, a space explorer constructs a simple pendulum of length 51.0cm. Find the period of the pendulum
assuming 95.0 efficiency for the conversion of electrical power by the motor what current must the 12.0 v batteries of
A size-5 soccer ball of diameter 22.6 cm and mass 426 g rolls up a hill without slipping, reaching a maximum height of 7.00 m above the base of the hill. At what rate was it rotating at the base of the hill
show that if a surface is given in the forn zx ythen the measure of curvature k can be expressed as kzxxzyy - zxy21 zx2
A driver traveling at 59 km/h sees a chicken dash out onto the road and slams on the brakes. Accelerating at -7 m/s2, the car stops just in time 24.3 m down the road. What was the driver's reaction time (i.e., the time that elapsed before he engag..
Trucks can be run on energy stored in a rotating flywheel, with an electric motor getting the flywheel up to its top speed of 611 rad/s. What is the kinetic energy of the flywheel after charging
If an electron travels 0.250 m from an electron gun to a TV screen in 32.0 ns, what voltage was used to accelerate it
A gas is compressed at a constant pressure of 0.320 atm from a volume of 8.00 L to 5.00 L. In the process, 400 J of heat energy flows out of the gas. What is the work done by the gas
Write down your expression in terms of the dipole moment. Express your reply in terms of, and appropriate constants.
A piece of iron isheated with a torch to a temperature of 6000 K. How much moreenergy does it emit as blackbody radiation at 6000K than it does atroom temperature, 300 K?
A fishing boat with a maximum speed of 3m/s relative to the water is in a river that is flowing at 2m/s. what is the maximum speed the boat can obtain relative to the shore? the minimum speed?
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