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David Purley, a racing driver, survived deceleration from 173 km/hto 0 km/h over a distance of .660 m when his car crashed. Assume that Purley's mass is 70.0 kg. What is the average force acting on him during the crash? Compare this force toPurley's weight.
If I short out a D cell and draw a current of 0.5 A for a minute, how many coulombs of charge move through the circuit
A sea lab 5.0 m high is to be designed to withstand submersion to 150 m, measured from sea level to the top of the sea lab. Calculate the pressure on top of the sea lab
Two blocks move along a linear path on a nearly frictionless air track. One block, of mass 0.104 kg, initially moves to the right at a speed of 5.20 m/s, Find the final velocities of the blocks
A ladder of negligible mass and length 5.00 m rests against a vertical wall. The ladder makes an angle of 53.1 with the ground. Find the forces of the ground and the wall on the ladder
Two particles of mass m1= 2.3 kg and mass m2 = 4.0 kg that are free to move on a horizontal track are initially held at rest so that they compress a spring as shown in the figure below. The spring has a spring constant k = 395 N/m and is compressed 0..
An m=8.25 Kg mass is suspended on a string that is pulled upward by the force of F=83.3 N. If the upward velocity of the mass is 3.25 m/s right now, what is the velocity 5.50 s later.
What are the components of displacement vector from camp to summit? What is its magnitude? Decide the x axis east, y axis north, and z axis up.
A 60 kg bicyclist rides his 9.8 kg bicycle with a speed of 16 m/s. What is the magnitude of the braking force
What is the inductance L of a coil connected to this capacitor if the oscillation frequency of the L-C circuit is 1.52MHz , corresponding to one end of the AM radio broadcast band
A flat coil enclosing an area of 0.07 m2 is rotating at 56 rev/s, with its axis of rotation perpendicular to a 0.17 T magnetic field. If there are 998 turns on the coil, what is the maximum voltage induced in the coil?
A girl floats in a lake with 97 percent of her body beneaththe water. What is her mass density
An electromagnet is made by inserting a soft iron core into a solenoid. What is the relative permeability KB of the iron core
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