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An elevator has mass 600 kg, not including passengers. The elevator is designed to ascend, at constant speed, a vertical distance of 20.0 m (five floors) in 16.0 s, and it is driven by a motor that can provide up to 40 hp to the elevator.
What is the maximum number of passengers that can ride in the elevator? Assume that an average passenger has mass 65.0 kg.
A plastic light pipe has an index of refraction of 1.49. For total internal reflection, what is the minimum angle of incidence if the pipe is in the following media
A 0.400-kg block is attached to a horizontal spring that is at its equilibrium length, and whose force constant is 23.0 N/m. How far does the putty-block system compress the spring
Integrated circuits are manufactured in vacuum chambers in which the air pressure is 6.00×10?11 mm of Hg, determine the mean free path of a molecule
Use approximate relationships to find the electric field at a point 4 cm from the axis, measured radially outward from the midpoint of shell.
A 100-watt light bulb is brighter than a 25-watt light bulb because it uses more power. Which bulb has a greater resistance, the 100-watt or the 25-watt light bulb
Find out the normal force exerted on the crate by the elevator.
A ball of mas 0.250. Kg is attached to a string 0.750 m long. The ball is swung in a s pendulum-type motion such that it has a speed of 6.40 m/s, What is the corresponding tension in the string
If the density of conduction electrons is 10^27 m^3 and the wire has a radius of one millimeter, what is the electrical current through this wire
7 an x-ray tube is operating with energy of 16 keV the produced x-rays photon strike a target and are compton-scattered at an angle of 45 degrees, what is the energy of the scattered x-ray photon in ev
How does the thermal velocity scale with the size of the molecule diffusing. determine the scaling law based on the resulting equation
According to the Guinness Book of World Records (1990 edition, p. 169), the highest rotary speed ever attained was 2010 m/s (4500 mph). The rotating rod was 15 cm (5.9 in) long. Imagine the speed quoted is that of the end of the rod.
A 821 kg car is going 29 m/s and the driver has to slam on his brakes to prevent an accident. what is the change in temperature of the brake pads and rotors
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