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During a football game, a receiver has just caught a pass and is standing still. Before he can move, a tackler, running at a velocity of +4.1 m/s, grabs and holds onto him so that they move off together with a velocity of +2.4 m/s. If the mass of the tackler is 125 kg, determine the mass of the receiver. Assume momentum is conserved.
A polystyrene cup contains 0.229 L of water at 20.0 degrees C. A 0.148 kg mass of an unknown material is heated to 51.2 degrees C. The mass is carefully placed in the cup. The cup has a lid placed over it. The system at equilibrium has a temperature ..
When the tungsten filament in a 60 W, 120 V light bulb reaches 2010degrees C, 60 W of electric power is used to produce light andheat. Find the current through the filament under these conditions which are established very shortly after the light i..
The 1900-turn coil in a dc motor has an area per turn of 1.1 10-2 m2. The design for the motor specifies that the magnitude of the maximum torque is 5.8 N · m, What is the current in the coil
a car is moving with speed 16.6 ms due south at one moment and 29.3 ms due east 9.00 seconds later. determine the
How much energy transfer as the reason of a temperature difference was there from the stove into the system consisting of the water plus the pan.
How fast is the roller coaster moving at the top of the loop
In an insulated container, 300g of ice at aninitial temperature of -5degrees C is added to 550g of water at aninitial temperature of 20degrees C. estimate the amount of ice remaining
What magnetic field strength produced by Helmholtz coils
A meniscus lens is concave on one side and convex on the other. Find the refractive power (diopters) of a meniscus lens
A proton has an initial speed of 3.3*10^5, What potential difference is required to reduce the initial speed of the proton by a factor of two
A drum with negligible mass and 0.600 {\rm m} in diameter is attached to the motor shaft, At what constant speed will the weight rise
A double-slit apparatus consists of two of slits separated by 0.25 mm with a screen 5.0 cm away. Calculate the wavelength of the light
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