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A small box of mass 10 kg is placed on top of a large box with a mass 4 times that of the small box. The large box slides on a frictionless horizontal surface, however the surface between the two boxes is rough. If the small box DOES NOT slide when a horizontal force of 15 N is applied to the large box, what is the magnitude of the frictional force acting on the small box.
First work out the momentum before and after hitting the table. Don't forget the gravitational force.
A 723-N person stands on a uniform board of weight 282 N and length 6.1 m. How far from the left end of the board is the person standing
Clarify the general purposes of the management report. Identify five subject areas or topics which have been recommended for inclusion in the management report.
An arrow is fire with a speed of 20m/s at the block of Styrofoam resting on a smooth surface. The arrow penetrates a certain distance into the block before coming to rest relative to it.
Calculate the speed of a proton after it accelerates from rest through a potential difference of 170V, Calculate the speed of an electron
A gas with initial conditions (P,V,T)i expands isothermally until the final volume=6.389 times the initial volume
To make ice, a freezer that is a reverse Carnot engine extracts 50 kJ as heat at -15°C during each cycle, How much work per cycle is required to run the freezer
An 88 kg spacewalking astronaut pushes off a 640kg satellite, exerting a 640N force for the 0.60 s it takes him to straighten his arms.
What is the current in the wire.
A charge of -3.95 nC and a charge of -5nC are separated by a distance of 30.0 cm. Find the position at which a third charge of +8.00 nC can be placed so that the net electrostatic force on it is zero. How many cm from the -3.95 nC charge and how m..
An object is placed 13.1 cm to the left of a diverging lens of focal length -6.04 cm. Find the distance d that places the final image at infinity
Strictly speaking, as more and more skyscrapers are being built on surface of earth, does the day tend to become longer or shorter.
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