The force of gravity on a wooden crate is 500.0 N. If it requires 1.5 x 103 J of work to push the crate at steady speed along the floor for a distance of 5.0 m, what is the coefficient of friction...

The force of gravity on a wooden crate is 500.0 N. If it requires 1.5 x 103 J of work to push the crate at steady speed along the floor for a distance of 5.0 m, what is the coefficient of friction...

A. The conduction of heat is slowed by the air. B. The convection of heat is increased by the air. C. The radiation of heat is increased by the air. D....

A girl moves along the boundary of a square field of side 20m in 80 s. What will be the magnitude of displacement at the end of 200s? Also calculate average velocity.

Earth revolves around the Sun in a circular orbit with a uniform speed. Is this motion uniform or accelerated?

a) A car travelling along a straight road, changes its speed. b) An athlete running a 100m race. c) Moon revolving around the earth. d) An Ant moving on the floor.

a) An object with a constant acceleration but with zero velocity. b) An object moving in a certain direction with an acceleration in the perpendicular direction.

How do we have to solve this question?

A scooter can produce a maximum acceleration of 5m/s2.Its brakes can produce a maximum retardation of 10m/s2 . Find the maximum time in which it starts from rest, covers a distance of 1...

On turning a corner, a motorcyclist rushing at 44 ms-1 finds a child on the road 100m away. He applies the brakes so as to stop the motorcar within with in 1 m of the child. Calculate the...

Please help me solve it. I am not able to comprehend it and know how to solve it.

Using a wheel and axle machine, a force of 100 N applied to the rim of a wheel can lift a load of 80 kg .The diameters of the wheel and axle are 1 m and 80 cm respectively. Determine the actual mechanical...

A 2m crowbar is employed to lift a 200 kg load. What force must a man apply to one end of the crowbar when a stone (acting as a fulcrum) is placed under the crowbar 20 cm away from the end on which...

Derive F = BIL by starting with a single charge formula F = qvB and recognizing that current is simply I = Q/t.

A magnet can exert a force on a moving charged particle, but it cannot do work on it (changing its kinetic energy). Why not? (a diagram might help).

A loud-speaker consists of a cone attached to a current-carrying coil located in a magnetic field. Describe exactly how this system works to deliver sound of a particular frequency (matching the music)...

I am curious as to whether or not the 14.7 pounds of external air pressure or air molecules interconnect from our heads to feet to ground,and our internal resistance works together with the outside...

I am curious as to whether or not the 14.7 pounds of external air pressure or air molecules interconnect from our heads to feet to ground,and our internal resistance works together with the outside...

A 60 kg block slides along the top of a 100 kg block with an acceleration of 2.0 m/s2 when a horizontal force F of 315 N is applied. The 100 kg block sits on a horizontal frictionless surface, but...

A track and field athlete, running on a circular track, completed 15 laps around the track in a total time of 5.3 min. Determine the angular velocity of the athlete. If the athlete...

I've spent all day on the following questions and can't seem to get them right. If anyone would be willing to provide a break down with the answer that would be greatly appreciated. I just want to...

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