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An 72.5 N box of clothes is pulled 15.8 m up a 29.9 ramp by a force of 113 N that points along the ramp.
The acceleration of gravity is 9.81 m/s2 . If the coefficient of kinetic friction between the box and ramp is 0.28, calculate the change in the box's kinetic energy.
If it has a mass of 14.0 g, what is the minimum current (in Amperes) through the wire that would cause a magnetic force equal to its weight
One mole of a ideal gas initially at temp To=0C undergoes an expansion at a constant pressure of 1atm to four times it original volume
A heart defibrillator is charged to 350V. It is connected to a patients chest and allowed to discharge through the heart. how much charge resides on the capacitor?
A 675 kg elevator starts from rest. It moves upward for 3.48 s with constant acceleration until it reaches its cruising speed, 1.86 m/s
A 5 kg block is placed near the top of a frictionless ramp, which makes an angle of 30o degrees to the horizontal. Find the maximum compression of the spring
What is the minimum speed in km/s , with which a metoer strikes the top of the earths stratosphere (about 14km above earths surface) assuming that the meteor being as a bit of interplanetary debris far from earth? Assume the drag force is neglible un..
In the figure to the left, the pulley (which is in the form of a disk) has a mass of 7.50 kg and a radius of 35 cm. What is the speed of the iron block
Suppose that, because of an aneurism, the cross-sectional area, A(1), of a normal portion of a blood vessel increases to a value A(2) = 1.7A(1).
a copper bar 2.5 m long has a circular cross section of radius 2 cm. one end is kept at 80 oc and the other end is kept
What is potential barrier for the molecule aggregation? Will the solution be stable at these conditions? Will it be stable at 100 mmol/L salt concentration?
The skis have a thrust of 200. Sam's speed at the bottom is 43.0. Illustrate what is the coefficient of kinetic friction of his skis on snow?
Suppose 47.5 cm of wire is experiencing a magnetic force of 0.7 N. What is the angle in degrees between the wire and the 1.25 T field if it is carrying a 6.5 A current
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