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Two boxes (m1 = 46.0kg and m2 = 29.0kg ) are connected by a light string that passes over a light, frictionless pulley. One box rests on a frictionless ramp that rises at 30.0^\circ above the horizontal (see the figure below), and the system is released from rest.
1. Find the acceleration of each box.
You place one end of the pole on a fence post and hold the other end of the pole 35 from its tip. Explain how much force must you exert to keep the pole motionless in a horizontal position
If you place the box on a dolly of mass 4.7 and with coefficient of rolling friction 2.0×10−2, illustrate what horizontal acceleration would that 154 force provide?
A car travelling at 105 strikes a tree. The front end of the car compresses and the driver comes to rest after travelling 0.85. What was the magnitude of an average acceleration of the driver during the collision? State the answer in terms of "'s,..
A 1.5kg- block of ice is initially at a temperature of -7.0C a)If 2.6×10^5J of heat are added to the ice, what is the final temperature of the system? b)Find the amount of ice, if any, that remains.
A person's eyeball has a diameter D (measured from lens to retina). find Where is this person's near point and far point
A charged particle of mass 1.56 g is moving at a speed of 1.39 104 m/s. the particle moves by a distance of 0.150 m in a direction perpendicular to the velocity. Find the charge on the particle
A cannon ball of mass 10 kg is launched at its melting point with an initial velocity of 100 m/s. If all of its kinetic energy is converted to heat energy, causing the cannon ball to completely melt but not increase in temperature, what is the lat..
The antenna for an AM radio station is a 75-m-high tower that is equivalent to one-quarter wavelength, At what frequency does the station transmit
To get up on the roof, a person (mass 70.0 kg) places a 6.00-m aluminum ladder (mass 10.0 kg) against the house on a concrete pad with the base of the ladder 2.00 m from the house. calculate the magnitudes of the forces on the ladder
A cosmic-ray proton in interstellar space has an energy of 25.0 MeV, What is the magnetic field in that region of space
A photon of wavelength 0.45000nm strikes a free electron that is initially at rest, What is the speed of the recoil electron after the collision
A hunter aims directly at a target (on the same level) 113 m away. If the bullet leaves the gun at a speed of 255 m/s, by how much will it miss the aim.
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