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One type of BB gun uses a spring-driven plunger to fire the pellet from its barrel
(a) Calculate the force constant, in newtons per meter, of the plunger's spring if you must compress it 0.1 m to drive the 0.075kg pellet to a top speed of 18 m/s.
(b) What force must be exerted to compress the spring, in newtons?
A thin block of soft wood with a mass of 0.074 kg rests on a horizontal frictionless surface. Calculate the initial and final kinetic energies of the system
Find out (a) the coefficient of kinetic friction between m2 and the incline, (b) the acceleration of each mass, and (C) the tension in the string.
A block with mass m1 = 9.4 kg is on an incline with an angle ? = 24.0° with respect to the horizontal. For the first question there is no friction, but for the rest of this problem the coefficients of friction are: ?k = 0.23 and ?s = 0.253. 1) When t..
Suppose a portable electric heater can be modeled by an Ohmic resistor. If the heater requires 600 Watts to operate, calculate the voltage drop across the heater
Geologist is camped 6,474 meter (about 4 miles) from a volcano as it erupts. Find how much time elapses before the geologist hears the sound from the eruption
a burst of mesons travel down an evacuated beam tube at fermilab at beta .92 with respect to the laboratory.a compute y
What is the radius of the circular track?
What was the power of the motor that kept the wheel rotating at 6.5 rev/hr in spite of friction.
A toy train rolls around a horizontal 1.5-m-diameter track.The coefficient of rolling friction is 0.15. What is the magnitude of the train's angularacceleration after it is released in rad/s2?
A dive bomber has a velocity of 230 m/s at an angle theta below the horizontal. When the altitude of the aircraft is 2.15 km, it releases a bomb, Find the angle theta
The wheel of a car has a radius of .350 m. the engine of the car applies a torque of 295 Nxm to this wheel that does not slip against the road surface.
A pair of electrically charged objects attract each other with a force of 36 N when they are a distance of 2 m apart. If their charges stay the same, then what will be the attractive force between them when they are 6 m apart?
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