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A ball moves in a circular path of 0.15 m diameter with a constant angular speed of 20 rev/ min. Its shadow performs simple harmonic motion on the wall behind it. Find the acceleration and speed of the shadow
a) at a turning point of the motion,
b) at the equilibrium position,
c) at a point 6 cm from the equilibrium position.
A 115.29 g ice cube at -11°C is placed in an aluminum cup whose initial temperature is 79°C. What is the mass of the cup
A ball thrown horizontally at 12.5m/ from the roof of a building lands 20.0mm from the base of the building. How tall is the building
A tree is approximated as a 60m tall cylinder with a diameter of 3m. What is the weight of the tree, using p as the unknown density of wood? Calculate the amount of compression of the tree due to gravity.
An electron with 184eV of kinetic energy in free space passes over a finite potential well 72eV deep that stretches from x=0 to \(x = 0.5\) nm. What is the electron's wavelength in free space
Two resistors, R1=100 Ω and R2=200 Ω, are connected in parallel across a battery. determine the total current through the battery
A car in an amusement park ride rolls without friction around the track. It starts from rest at point A at a height h above the bottom of the loop. Treat car as particle a) what is the minimum (in terms of R) such that the car moves around the loop w..
A resistor with 325? and an inductor are connected in series across an ac source that has voltage amplitude 520V . The rate at which electrical energy is dissipated in the resistor is 234W. What is the amplitude of the voltage across the inductor
Two blocks of mass m and 75 kg are connected via a light cord over a massless, frictionless pulley as shown in the attached figure. If the 75 kg block starts 2.0 m above the floor and takes 3.0 s to reach the floor when released from rest, what..
A 4 µF capacitor is charged to a potential di?erence of 14 V. What is the capacitance of the second capacitor
A 67.5 kg person sits on a 3.77 kg chair. Calculate the pressure exerted on the floor by each leg of the chair, assuming the weight is evenly distributed
A 66-kg man standing on a scale in an elevator notes that as the elevator rises, What is the acceleration of the elevator
a carpenter has been asked to build an open box with a square base. the sides of the box will cost 4 per square meter
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