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An iron bar of mass, 0.99 kg, slides down a frictionless incline 0.94 m high. At the bottom of the incline it collides and sticks to a magnet of mass, 1.13 kg. What is the speed of the combined masses after collision?
A 160 object is taken to a height of 320 above the Earth's surface. What is the object's weight at this height
Hot exhaust gases leaving an internal combustion engine at 400 C and 150kPa at a rate of 0.8 kg/s is to be used to produce saturated steam at 200 C in an insulated heat exchanger. Water enters the heat exchanger at the ambient temperature of 20 C,..
In case A, a metal bullet penetrates a wooden block, In case B, a rubber bullet with the same initial speed and mass, bounces off of an identical wooden block. Will the speed of the bullet in case B after the collision be or = of speed just before ..
In a serious accident, a nuclear power plant%u2019s reactor vessel cracks, and all of the cooling water drains out. how much energy will it take to melt the core
A 1.60 kg ball and a 7.20 kg ball are connected by an 80.0 cm long massless, rigid rod. The structure rotates about its center of mass at 320.0 rpm. What is the rotational kinetic energy of the structure?
It takes the Mars rover 4.5 minutes to send information via a radio signal traveling at the speed of light back to Mission Control on Earth. How far away is the rover
A ball is launched at 4.43 m/s at an angle of 66 degrees above teh horizontal and the time of flight is 0.84 s, then what is the maximum height of the ball
A log of mass 40 kg is dropped into river at 0°C. If the relative density of the log is 0.8, what will be the volume of the log above the surface
a ball is released from top of a 98m tall building. At the same instant a second ball is thrown straight up from the ground with an initial speed of 28m/s directly below the point, what are the balls velocities just before the collision
The magnetic force exerted on a 3.0-m segment of straight wire is 1.9 N. What is the angle between the wire and the magnetic field
At the top of a building with a height of 70 m, a ball is thrown vertically upward at time t = 0 with an initial velocity of 12.0 m/s. find the time at which the ball reaches its highest point
The drawing shows two boxes resting on frictionless ramps. One box is relatively light and sits on a steep ramp. determine the speed of the lighter box
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