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Andy (mass 80 Kg) uses a 3.0 m long rope to pull Bob ( mass 60 kg) across the floor (µk=0.20) at a constant speed of 1.0 m/s. Bob signals Andy to stop by "plucking" the rope, sending a wave pulse forward along the rope. The pulse reaches Andy 150 ms later. What is the mass of the rope?
An 18.7 cm screwdriver is used to pry open a can of paint. If the axis of rotation is 3.07 cm from the end of the screwdriver blade, what force is applied to the lid
A rock is shot vertically upward from the edge of the top of a tall building. with what upward velocity is the rock shot
a van de graaff generator has a dome of radius 2.0 m. a motor causes a charged insulating belt to travel continuously
A 3.00 kg mass resting on a level table top is pulled along by a horizontal force of 16 N and accelerates at 4.00 meters per second per second. What is the force of friction between block and table.
Two carts with masses of 12.5 kg and 4.5 kg, respectively, move in opposite directions on the frictionless horizontal track with speeds of 8 m/s and 5 m/s, respectively. The carts stick together after colliding head-on. Find the final speed of the..
1 . a wooden box item sits on a horizontal wooden board. the coefficient of static friction between the box and the
An ocean liner leaves New York City and travels 13° north of east for 268 km. How far east and how far north has it gone? In other words, what are magnitudes of the components of the ship's displacement vector in the following directions.
The effectual coefficient of kinetic friction is 0.37. Compute the work done by the man on the piano.
A sphere of radius a has a radial polarization given by P = \(\alpha r^{n} \) ^r (r_hat) , where \(\alpha\) and n are constants and n is greater than or equal to 0. Find the bound volume and surface charge densities. Find E inside and outside th..
The clarinet is well modeled as a cylindrical pipe that is open at one end and closed at the other. Find the wavelength and frequency of the third normal mode of vibration of a clarinet\'s air column with effective length of 39.7 cm.
The assembly made with massless strings attached to balls. Ball A (m=0.3kg) is released from height 0.2m above ball B (m=0.5kg) also at rest. What max height does each ball achieve after collision
Calculate the work done on a gas, the change in internal energy of the gas, the heat added to the gas, and the change in entropy of the gas when 1.12 moles of oxygen
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