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A blue puck with a mass of 3.60×10?2kg , sliding with a speed of 0.180m/s on a frictionless, horizontal air table, makes a perfectly elastic, head-on collision with a red puck with mass m, initially at rest. After the collision, the velocity of the blue puck is 3.0×10?2m/s in the same direction as its initial velocity.
a) Find the magnitude of the velocity of the red puck after the collision.
b) Find the direction of the velocity of the red puck after the collision.
c) Find the mass m of the red puck.
a dog is walking slowly toward a motion detector. Draw a position graph that could represent this motion. Show your work.
A quantity of an ideal gas is contained in a balloon. Initially the gas temperature is 27°C, What is the new temperature of the gas
A Father pulls his sons across the son on a sled. The children and sled together weigh 550-N. The father pulls the sled with a force of 400-N at an angle of 40 degrees above the horizontal. Avoiding friction, determine out the acceleration of the ..
The resistance of a silver wire is to be calibrated for low-temperature measurements. A silver wire with a resistance of 1.15, what is the expected resistance of the silver wire at -196 °C
Explain the distinction between reimbursement grants and entitlements. Explain how does this distinction affect the way each type of grant is accounted for?
A professor's office door is 0.94 wide, 2.2 high, 4.0 thick; has the mass of 23, and pivots on frictionless hinges. A "door closer" is attached to door and top of the door frame. When the door is open and at rest, the door closer exerts a torque of 5..
A rock is tossed straight up with a velocity of 14 m/s When it returns, it falls into a hole 10m deep.
The coefficient of friction between his clothes and Earth is 0.70. He slides so that his speed is zero just as he reaches the base. Evaluate how far does he slide?
A box slides down a 22° ramp with an acceleration of .92m/s2. Determine out the coefficient of kinetic friction between the box and the ramp.
How large a force F2 must the second crewman pull so that the net force of the two crewmen is in the forward direction.
A 378 N, uniform, 1.56 m bar is suspended horizontally by two vertical cables at each end. Cable A can support a maximum tension of 502.0 N without breaking, and cable B can support up to 397.0N. You want to place a small weight on this bar. What is ..
What is the total charge of the thorium nucleus? (The neutral thorium atom has 90 electrons.), What is the magnitude of the force on an electron at that distance
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