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A 55 kilogram is pushed a distance of 7 meter across the floor by a force whose magnitude is 150 Newton. The force is parallel to the displacement of the box. The coefficient of kinetic friction is 0.25. Find the work done by each of the forces acting on the box.
A 40 cm wire is moved perpendicularly during a magnetic field of 0.32 T with a velocity of 1.5 m/s. If this wire is connected into a circuit of 12 ohms resistance, what is the current?
How would you work the problem if the net electric field produced at the center of the circle made an angle of 29.3 degrees with the vertical axis, measured counter clockwise.
The upper end of a 3.20m--long steel wire is fastened to the ceiling, and a 58.0kg- object is suspended from the lower end of the wire, What is the mass of the wire
In the diagram below, a student compresses the spring in a pop-up toy 0.020 meter. how much energy, in Joules, is being stored in the spring
What is the (a) magnitude and (b) angle (measured relative to the positive direction of the x axis) of the asteroid's acceleration.
A 6.0 kg block slides along a frictionless horizontal ground at a velocity of 7 m/s. Find how far along the ramp does the block slide before reaching zero velocity momentarily
A catcher catches a 145 g baseball traveling horizontally at 38.0 m/s. How large an impulse does the ball give to the catcher
Consider two points charges held fixed at locations along the x-axis. Charge q1= 5.00mC is located at x1= 1.00m. Charge q2= -5.00 mC is located at x2=4.00m. calculate the magnitude and direction of the electrostatic force
A 1.7kg , 20-cm-diameter turntable rotates at 50rpm on frictionless bearings, What is the turntable's angular velocity, in rpm, just after this event
A bullet of mass 10.5 g is fired into aninitially stationary block and comes to rest in the block. Theblock, of mass 0.80 kg, is subject to nohorizontal external forces during the collision with the bullet.After the collision, the block is observe..
A pair of eyeglasses has an index of refraction nglass = 1.52. It is covered with an antireflection layer that has a thickness of 120 nm, what is its index of refraction
a 0.40kg ball is suspended from a spring with spring constant 12 N/m. what is its maximum speed while it oscillates
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