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A block of mass M1=3.5kg moves with velocity v1=6.3m/s on a frictionless suface.It collides with block of mass M2=1.7kg which is initally stationary. The blocks sticks togeher and encounter a rough suface. The blocks eventually come to a stop after traveling a distance d=1.85m. What is the coefficient of kinetic friction on the rough surface?
Suppose that we have a mixture of N2 (g) and O2 (g) of unknown composition whose total pressure is 385 torr. If all the oxygen as is removed from the mixture by reaction with phosphorus
A series R-L-C circuit is connected to a 150Hz ac source that has Vrms = 80.0V. What average power is delivered to the circuit by the source
Two long, parallel wires, each having a mass per unit length of 40 g/m, are supported in a horizontal plane by strings 6.00cm long. When both wires carry the same current I.
A 70 g metal block moving at 200 cm/s slides across a tabletop a distance of 83 cm before it comes to rest. how much does the temperature of the block rise
Two thin rods of length L lie along the x-axis, one between x=a/2 and x=a/2+L and the other between x= - a/2 and x= - a/2 - L. Each rod has positive charge Q distributed uniformly along its length.
Neglect air resistance and muscle atrophy and assume the same upward normal reaction force as on earth: how far could she long jump on the moon
You run a microwave for 6 minutes together with a 1500 W boom-box and a 2800 W space heater. What is the power of your microwave
a shot putter threw a shot-put with a speed of 13.4 m/s at an angle of 43 above the horizontal. How far did the shot-put travel in the horizontal direction
A window washer is standing on a scaffold supported by a vertical rope at each end. The scaffold weighs 192 N and is 3.1 m long. What is the tension in each rope
A young woman buys a sports car that can accelerate at the rate of 5.47m/s2. She decides to test the car by drag racing with another speedster, Stan Speedy. Both start from rest, but experienced Stan leaves the starting line 1.47s before Kathy. Stan ..
A stationary destroyer is equipped with sonar that sends out pulses of sound at 35.000 MHz. If the speed of sound in seawater is 1.57 km/s, find the depth of the submarine
A student wants to have $30,000 when he graduates 4 years from now. His grandfather gave him a gift of $10,000. How much must he save each year (to the nearest dollar) if he deposits the $10,000 today
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