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A 2.0 kg ball and a 3.5kg ball are connected by a 2.5m long rigid, massless rod. The rod and balls are rotating clockwise about its center of gravity at 16 rpm. What torque will bring the balls to a halt in 6.0s ?
The hydrogen atom consists of a proton of mass 1.67*10^-27Kg and an orbiting electron of mass 9.11*10^-31kg. In one of it's orbits, the electron is 5.3*10^-11m from the proton. what is the mutual attractive gravitational force between the electron..
Calculate the magnitude of the angular momentum of the Mars due to its rotation around an axis through the north and south poles, modeling it as a uniform sphere.
A mechanic pushes a 3.4 103 kg car from rest to a speed of v, doing 5000 J of work in the process. During this time, the car moves 26.0 m. find the horizontal force exerted on the car
A horizontal 790-N merry-go-round of radius 1.30 m is started from rest by a constant horizontal force of 45 N applied tangentially to the merry-go-round. Find the kinetic energy (Joules) of the merry-go-round
two infinitely long charged cylinders are centered on the same axis. the inner cylinder of radius a3cm has a uniform
A wall is composed of two materials. Material 1 has a thickness of3.22 cm and a thermal conductivity of 0.1 while material 2 has athickness of 8.49 cm and a conductivity of 1. If the temperature difference inside to outside is 25 Co and the wall h..
The radius of the earth's orbit around the sun is approximately 90 million miles (90*10^6). What is the speed of the earth in miles per hour
Four 1.8 kg masses are located at the corners of a square 0.20 m on each side. Find out the magnitude and direction of the gravitational force on a fifth 1.8 kg mass placed at the midpoint of the bottom side of the square.
Two conductors having net charges of 14 µC and ?14 µC have a potential di?erence of 11.1 V. Determine the capacitance of the system
A heat pump has a coefficient of performance equal to 4.35 and requires a power of 1.77 kW to operate. How much energy does the heat pump add to a home in one hour
a particular fish tank filled with fresh water n 1.33 has a coral reef sticker stuck to an exterior wall outside of
A 9.14-m ladder with a mass of 24.2 kg lies flat on the ground. A painter grabs the top end of the ladder and pulls straight upward with a force of 254 N. What is the net torque acting on the ladder
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