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A 0.03 kg (lead) bullethits a steel plate and melts and splatters on impact. Assuming that the bullet recieves 80% of the collision energy, at what minimium speed must it travel to melt on impact?
How is this soved without knowing what the bullet is made out of?
Water flows at speed of 4.9 m/s through a horizontal pipe of diameter 3.2 cm. The gauge pressure P1 of the water in the pipe is 1.5 atm. What is the gauge pressure of the water flowing through the constricted segment in atm
a 55 kg swimmer is standing on a stationary 175 kg floating raft. the swimmer then runs off the raft horizontally with a velocity of + 3.7 m/s realtive to the shore. Find the recoil velocity that the raft would have
The multiplicity for a particular system is ?= exp(N^2V^3U^1/2/?), where gamma is a constant to give correct units, V is the volume, N is the number of particles, and U is the energy. What is the system's entropy, temperature, chemical potential, pre..
Now assume that a strong, uniform magnetic field of size 0.55 T pointing straight down is applied. What is the size of the magnetic force on the wire
An explosion breaks an object into two pieces, one of which has 1.5 times the mass of the other. how much kinetic energy did each piece acquire
A 1200 kg satellite completes one circular orbit of the earth every 90 minutes. Determine the radius of the satellite's orbit
q1. a 23 g ball is fired horizontally with initial speed toward a 110 g ball that is hanging motionless from a 1.1m
A small electric car overcomes a 244N friction force when traveling 29.6km/hr. The electric motor is powered by ten 12.0V batteries connected in series and is coupled directly to the wheels whose diameters are 49.0cm. The 281 armature coils are re..
The power rating of a resistor is the maximum power it can safely dissipate without being damaged by overheating. what is the maximum current it can carry without damage
An outside loudspeaker (considered a small source) emits sound waves with a power output of95W. Find the intensity level in decibels at that distance
During an initial stage of construction, the beam is not to be bolted to the wall, but to be held in place solely by friction. What is the least coefficient of friction between the beam and the wall for the beam to remain in static equilibrium.
A 50 kg person stands at the edge of a 7.4 m diameter circular platform, What is the magnitude of the speed of the person (in m/s) with respect to the ground
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