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An internal explosion breaks an object, initially at rest, into two pieces. One piece (m1) is 2 times more massive than the other (m2). If 7500 Joule were released by the explosion, find how much kinetic energy did each piece get?
A hoop of mass 1.9 kg and radius 55 cm has a string wrapped around its circumference and lies flat on a horizontal frictionless table. What is the angular velocity of the hoop about its center of mass after 2 s
A common flashlight bulb is rated at 0.202 A and 3.82 V (the values of current and voltage under operating conditions, estimate the temperature of the tungsten filament when the bulb is turned on
While running, a person dissipates about 0.60 J of mechanical energy per step per kilogram of body mass. how fast is the person running
a small ferryboat is 4.00 m wide and 6.00 m long. when a loaded truck pulls onto it the boat sinks an additional 4.20
You are working for a shipping company. Your job is to stand at the bottom of a 5.9 -long ramp that is inclined at 45 above the horizontal. You grab packages off a conveyor belt and propel them up the ramp.
The Doppler Effect for light is exactly the same because it is for sound. Hubble discovered that things further away from us were moving away from us faster than things close to us. In fact, there is almost a linear relationship among distance and re..
A defibrillator consists of a 17.0-µF capacitor that is charged to 8.5 kV. What is the average power delivered to the tissues
After a tornado, a 0.60g straw was found embedded 3cm into the trunk of a tree. If the average force exerted on the straw by the tree was 90N, what was the speed of the straw when it hit the tree.
A 4.0kg mass is attached to a spring that has a spring constant, k =2500 N/m, and is resting on a frictionless horizontal surface. What is the maximum velocity of the block
Two diffraction gratings, A and B, are located at the similar distance from the observation screens. Light with the same wavelength λ is utilized for each. The separation among adjacent principal maxima for grating A is 2.7cm, and for grating B it is..
A 1000 kg sports car accelerates from rest to 25.0m/s in 7.5s. What is the average power output of the automobile engine
A car takes off from rest with a constant acceleration.After 5 seconds it is traveling at 20 m/s. What is the acceleration of the car
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