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A copper cable (p=1.7*10^-8ohms*m) is designed to carry a current of 300A with a power loss of 2W/m. What is the required radius of this cable?
A 290 g piece of iron at 180 oC is placed in a 95 g aluminum calorimeter cup containing 250 g of glycerin at 10 oC. What is the specific heat of glycerin
A dynamite blast at a quarry launches a rock straight upward, and later it is rising at a rate of 15m/s. Assuming air resistance has no effect on the rock, calculate the total time the rock is in the air.
what is the shortest height a plane mirror must be so that a person 1.60 meters tall is able to see his or her whole body.
What is new angular speed of the merry-go-round
a satellite of Jupiter, has an orbital period of 1.77 days and an orbital radius of 4.22 105 km. From these data, determine the mass of Jupiter
A constant force of 23 N pulls on a 12 kg block on a horizontal surface. What is the work done by the constant force
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 single conservative force F(x) acts on a 1.1 kg particle that moves along an x axis. What is the maximum kinetic energy of the particle
Your team of test engineers is to release the parking brake so an 848.0-kg car will roll down a very long 6.1 percent grade in preparation for a crash test at the bottom of the incline. What is the terminal speed for the car rolling down this grade
Three 1.2 kg masses are located at the vertices of an equilateral triangle 88 rm cm on a side, connected by rods of negligible mass. Find out the rotational inertia of this object.
Illustrate what is the frictional force acting on the disk? The disk will slide off the turntable if it is located at a radius larger than 16 cm from the axis of rotation. What is the coefficient of static friction?
A system consists of three particles with these masses and velocities: mass 3.2 kg, moving north at 3.0 m/s; mass 3.8 kg, moving south at 4.9 m/s, What is the total momentum of the system
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