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Q1. The arrangement in the drawing shows a block (mass = 14.7 kg) that is held in position on a frictionless incline by the cord (length = 0.602 m). The mass per unit length of the cord is 1.24 e-2 kg/m, so the mass of the cord is negligible compared to the mass of block. The cord is being vibrated at a frequency of 167 Hz (vibration source not shown in the drawing). What is the smallest angle θ between 15.0 degree and 90.0 degree at which a standing wave exists on cord?
Q2. The area of the piston in the master cylinder is 1.75 cm2, and that of the piston in the brake cylinder is 6.40 cm2. The coefficient of friction between shoe and wheel drum is 0.50. If the wheel has a radius of 44 cm, find out the frictional torque about the axle when the force of 45 N is exerted on the brake pedal.
What is amplitude of the electric component of the signal
You bring a 350-g wrench into the house from your car. The house is 15 C warmer than the car, and it takes 2.52 kJ of energy to warm the wrench by this amount. Find (a) heat capacity of the wrench and (b) specic heat of the metal it's made from.
What is an average speed for the new trip
A weather vane at first at rest has a moment of inertia of 0.111 kg • m2 about its axis of rotation. A 53.0 g piece of clay is thrown at the vane and sticks to it at a point 19.5 cm from the axis. The initial velocity of the clay is 20.0 m/s, directe..
A particle oscillates with S.H.M. The maximum displacement from its mean position is 0.5 meter and frequency of motion is 10 Hz. at time t=0, particle is located at 0.15 meter and has the velocity of 24.0 m/s towards the negative x-axis.
What is EMF in the secondary circuit
A large tanker truck can carry 30 ton (30,000 lb) of liquid. (a) What volume of water can it carry? (b) What volume of gasoline can it carry.
A curve of radius 50 m is banked for the design speed of 100 km/h. If the coefficient of static friction is 0.60 (wet pavement), at what range of speeds can a car safely create the curve.
How numerous extra electrons are on this particular oil drop (given the presently known charge of the electron)?
A stone takes 0.28s to travel past a window 2.2m tall. From what height above top of the window did the stone fall?
The pulley system is used to lift a 61 kg crate. Note that one chain connects the upper pulley to the ceiling and a second chain connects the lower pulley to the crate. The crate is rising with an acceleration of 2.4 m/s2. Assume the masses of the ch..
What is magnitude of the unknown force
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