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A 2.30-g bullet embeds itself in a 1.40-kg block, which is attached to a spring of force constant 780N/m .
A) If the maximum compression of the spring is 5.80cm , find the initial speed of the bullet.
B) Find the time for the bullet-block system to come to rest.
A weightlifter bench-presses a 170.0 kg barbell from his chest to a height equal the length of his arms 0.750 m. What is the potential energy of the barbell relative to the weightlifter\'s chest after he lifts the barbell
A 60.5 -kg runner has a speed of 4.60 m/s at one instant during a long-distance event. what is the runner's kinetic energy at this instant
It's possible to estimate the percentage of fat in the body by measuring the resistance of the upper leg rather than the upper arm, What are the fractions of muscle and fat in the leg
The spring of the pressure gauge shown in has a force constant of 1 400N/m, and the piston has a diameter of 1.60cm. When the gauge is lowered into water in a lake, what change in depth causes piston to move in by 0.850cm.
A copper vat is 12 m long at room temperature (20 degrees Celsius). How much longer is it as it contains boiling water at 1 atm pressure.
From illustrate what height did the student fall? Suppose that the only force acting on him during the collision is that due to the ground.
The water is near freezing in temperature. Typically a human can only swim in such water for about 300 seconds (or 5 minutes) before hypothermia sets in. Calculate the time the explorer spends in the water
Describe an experiment to measure the molecular weight Mw and the second viral coefficient B of a macromolecules in solution using osmotic pressur. Show how you would plot the experimental data.
A When the magnetic flux through a single loop of wire increases by 30 Webers, a current of 40.0 A is induced in the wire. over what time did the flux change
A rocket is launched at an angle of 52° above the horizontal with an initial speed of 103 m/s. The rocket moves for 3s along its initial line of motion with an acceleration of 32 m/s2. At this time, its engines fail and the rocket proceeds to move..
A Carnot engine operating between energy reservoirs at temperatures 300K \rm K and 530K K produces a power output of 1200W, What is the rate of heat output
You create a diffrent kind of pendulum by swinging a meter stick (mass m) on its end. It swings with small oscillations. Determine the angular frequency w ( I=1/3 ML ^2)
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