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Q1. A conveyor belt at a quarry lifts 2,000 kg of sand per minute up a vertical distance of 12 meters. The sand is at first at rest, then moves at a speed of 0.20 m/s along conveyor belt. What is the instantaneous power generated by this machine?
Q2. An airplane is flying horizontally with the speed of 1300km/h when an engine falls off. Neglect air resistance; imagine it takes 25 s for the engine to hit the ground.
a) What is the altitude of the plane?
b) What is the horizontal distance the airplane engine falls?
A wave has the following properties: amplitude = 0.559 m, period = 0.801 s, wave speed = 13.9 m/s. What is the equation for the wave
Two automobiles, each of mass 1.500*10^3 kg, travel in the same direction along a straight road. find the translational kinetic energy of the center of mass
A house is 30 ft long and 24 ft wide, and has 8 ft high ceilings. What is the volume of the interior of the house in cubic meters and cubic centimetres.
One leg of a Michelson interferometer contains an evacuated cylinder of length L, having glass plates on each end, what is the index of refraction of the gas
What is the magnitude of the apparent weight of a 68kg astronaut 2600km from the center of the Earth's Moon in a space vehicle accelerating toward the Moon at 2.1m/s2
A baseball m = 0.56 kg is spun vertically on a massless string L = 0.94 m. The string can only support a tension of T = 9.4 N before it will break. What is the maximum speed at the top of the loop in m/s
A cord of length 1.5 m is fixed at both ends. Its mass per unit length is 1.1 g/m and the tension is 11 N. What is the frequency of the fundamental oscillation
What is the frequency of blue light that has a wavelength of 450 nm and What is the frequency of red light that has a wavelength of 650 nm
The electronic flash attachment for a camera contains a capacitor for storing the energy used to produce the flash, Assuming that the flash lasts for 4.6 ms, find the effective power or "wattage" of the flash
A convex lense of focal length 18 cm is used as a magnifying glass. at what distance from a tiny insect must you hold this lense to get a magnification of 3.
question1a jet plane lands with a velocity of 112 ms and can accelerate at an utmost rate of -5.50 ms2 as it comes to
A parallel plate capacitor has a capacitance of 4.5 µF when filled with a dielectric. What is the dielectric constant of the dielectric
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