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A mass is bouncing on the end of a spring with a period T when measured by a ground observer. What would the period of oscillation be (as measured by the same observer) if the mass and spring were moving past the ground observer at a speed of 0.600c?
The air conditioning unit for a building uses a water chiller with a capacity of 12.0 tons of refrigeration. Determine the coefficient of performance of this unit if it is driven by a 14.0 hp electric motor.
Two telephone poles are separated by 40 m and connected by a wire. A bird of mass 0.50kg lands on the wire midway among the poles, causing the wire to sag 2.0 m below horizontal. Assuming the wire has negligible mass, what is the tension in the wire?
Two particles of mass m1 = 1.1 kg and m2 = 2.8 kg are traveling with velocities v1 = 4.5 m/s, and v2 = 2.5 m/s, What is the total momentum of this system
A diver comes off a board with arms straight up and legs straight down, giving her a moment of inertia about her rotation axis of 19.5 kg · m2. She then tucks into a small ball, decreasing this moment of inertia to 3.65 kg · m2. While tucked, she mak..
A 7.1-kg block of aluminum is heated from 30°C to 60°C at atmospheric pressure. Find the work done by the aluminum
An engine goes through a cyclic process. In the process, the engine does 700 J of work and has a heat output of 2200 J. What is the efficiency of the engine?
A sled starts from rest at the top of a hill and slides down with a constant acceleration. What is the speed of the sled when it passes the 14.4-m point
we have been asked to create a plot of b2 vs. 1d2 a2 and use the slope of that plot and the following equation to
A 0.15g honeybee acquires a charge of 21pCwhile flying, What is the ratio of the electric force on the bee tot he bee's weight and What electric field strength and direction would allow the bee to hang suspended in the air
A potential di?erence of 10 V is found to produce a current of 0.44 A in a wire of length 3.1 m with a uniform radius of 0.44 cm What is the resistivity of the wire
Calculate the threshold voltage - the field effect mobility and Draw the Cif/CCox versus VG curve for the device if the metal gate is replaced with a p-type poly-Si gate doped to NA = NA1.
two particles with equal mass have positive charges of 1.0 microcoulombs and 1.0 nanocoulombs. what is their mass if
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