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A block of mass 1.75 kg is kept at rest as it compresses a horizontal massless spring (k = 88.3 N/m) by 5.59 cm. As the block is released, it travels 0.302 m on a rough horizontal surface before stopping.The acceleration of gravity is 9.8 m/s^2.
Calculate the coe?cient of kinetic friction between surface and block.
find the moment of inertia about the z axis of the hemispherical shell of z= (2^2-x^2-y^2)^(1/2), derive the unit normal vector for surfaces given by y=g(x,z_ x=h(y,z)
The y-component of the radiated magnetic field of a plane electromagnetic wave moving in the z-direction is given by By(t) = (1.20 ?T)sin [(2? rad) (z /340 m ? t /1.13 ?s)],
A golf ball with a coefficient of restitution of 0.78 is tossed horizontally at 0.9 m/s from a height 1.5 m above the level ground. What is the maximum height of the first bounce of the golf ball
The population of a community was 12500 in 1985 and 36000 in 2000. Find the time it takes the population of this town to double
q1. a professors office door is 0.80 wide 3.0 high and 5.0 thick has the mass of 25 and pivots on frictionless hinges.
The yellow light from a helium discharge tube has a wavelength of 587.5 nm. Calculate the number of lines per centimeter on the grating
A 5.5 g dart is fired into a block of wood with a mass of 22.6 g.The wood block is initially at rest on a 1.5 m tall post. After thecollision, the wood block and dart land 2.5 m. from the base of thepost. Find the initial speed of the dart.
A piano tuner stretches a steel piano wire with a tension of 1040N . The wire is 0.400m long and has a mass of 3.90g. What is the frequency of its fundamental mode of vibration
Two waves with identical frequency but different amplitudes A1 = 4.0 cm and A2 = 1.0 cm, occupy the same region of space (are superimposed). What is the amplitude of the resulting wave in that case
flash decides to make a capacitor at homes. Flash takes two thin, flat, rectangular aluminum plates measuring 35 cmby 50 cm. find the capacitance of flash's creation
A metal ball with a mass of 3.77·10^-6 kg and a charge of +4.79 mC has a kinetic energy of 6.21·10^8 J. It is traveling directly at an infinite plane of charge with a charge distribution of +4.05 C/m^2. If it is currently 1.39 m away from the plane o..
a car traveling at 95 km/hr. is 210 m behind a truck traveling at 75 km/hr. How long will it take the car to catch the truck
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