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Two boxes (b1=26kg and b2=64kg) are being pushed across a horizontal frictionless surface, as the drawing shows. The 47-N pushing force is horizontal and is applied to the26-kg box, which in turn pushes against the64-kg box. Find the magnitude of the force that the26-kg box applies to the64-kg box.
a magnet is at the end of the dial-o-gram balance arm. the arm has an aluminum plate in the magnetic gap. what is the
two bicycles approach one another each traveling with a speed of 8.50 ms.i if bicyclist a beeps a 315-hz horn what
a satellite of mass 500 kg is placed in an orbit of radius 5 times the radius of earth, i.e. the distance between the satellite, calculate the cetripetal force experienced by the satellite
a radio wave, sent from mars to the earthwhen the two are closest to eachother, takes 3.03 minutes. calculate the distance between perihelion and aphelion for mars
If the rays through the top and bottom of a slit reach a point on the viewing screen with a path length difference equal to 2 wavelengths, what is at that point?
A ball of mass 0.220 kg that is moving with a speed of 6.3 m/s collides head-on and elastically with another ball initially at rest. Calculate the mass of the target ball
A 731 kg car moving at 29 m/s brakes to a stop. The brakes contain about 13 kg of iron that absorb the energy. What is increase in temperature of the brakes
an airplane traveling at v 180 ms emits a sound of frequency 5.70 khz. at what frequency does a stationary listener
A prospector finds a solid rock composed of granite (ρ= 2650 kg/m3) and gold. The volume of the rock is 3.95 multiplied by 10-4 m3 and its mass is 4.14 kg. What percentage of the rock is gold by mass?
The loop, having rotated by 45°, rotates clockwise another 30°, so that the normal to the plane points at an angle of 75° with respect to the direction of the magnetic field. Find the magnetic flux through the loop
The angular velocity of a disc is given by: ? = 24t - 6t^2. At what time is the torque acting on the disc zero
A car is accelerating uniformly from rest. At the end of the first second its velocity is 3.0 kilometer per hour. Find what is its velocity at the end of the fifth
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