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An 8.00-g bullet is fired horizontally into a 9.00-kg block of wood on an air table and is embedded in it. After the collision, the block and bullet slide along the frictionless surface together by a speed of 10.0 cm/s. What was the initial speed of the bullet?
An unstable atomic nucleus of mass 1.60 10-26 kg initially at rest disintegrates into three particles. One of the particles, of mass 5.02 10-27 kg, Find the total kinetic energy increase in the process
A 1.0 kg mass is connected to a spring with a spring constant of 9.00 N/m. find the maximum spring potential energy of the simple harmonic motion
In a certain particle accelerator a 5MeV beam of protons with a current of 0.5mA and beam radius of 1.5mm is shot at a target. How many protons hit the target in one second
to focus a camera on objects at different distances the converging lens is moved toward or away from the film so a
A girl pulls a box of mass m = 6 kg across a floor with a constant horizontal force F = 22 N. Initially the block is at rest. For the first d1 = 7 m, What is work done on the box by friction in moving the box over the distance d1 + d2
The two 10-cm-long parallel wires are divided by 5.0 mm. For what value of the resistor will the force between the two wires be 1.08×10-4 N.
A 1000kg car coasting at 72.0km/h on a level frictionless road comes to a 15 degree incline. Calculate how far the car will travel before coming to rest
High speed stroboscopic photographs show that the head of a200-g golf-club is traveling at 55m/s just before it strikes a 46 ggolf ball at rest on a tee. Find the speed of the golf ball just after impact
A 25 g of copper pellets are removed from a 300 C oven and immediately dropped into 120 mL of water at 18 C in an insulated cup. What will the new water temperature be.
A car is driven 215 kilometer west and then 85 kilometer southwest. Determine the displacement of the car from the point of origin (magnitude and direction)
Transverse waves with a speed of 50.0 m/s are to be produced on a stretched string. A 5.00-m length of string with a total mass of 0.0600 kg is used. (a) What is required tension in the string? (b) Calculate the wave speed in the sting if the tension..
A sample of 10.0 mCi decays 1.2% in a single day. What is the activity after 30 days?
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