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You push with a horizontal force of 48.0 against a 23.0 box, pressing it against a rough wall to hold it in place. The coefficients of kinetic and static friction between this box and the wall are 0.200 and 0.500, respectively.
Part A What is the friction force on the box?
Part B How hard would you have to press for the box to slide downward with a uniform speed of 9.00?
A uniform soda can of mass 0.140 kg is 12.00 cm tall and filled with 1.31 kg of soda. After that small holes are drilled in the top and bottom (with negligible loss of metal) to drain the soda.
A man is lifting a 50kg rock. This weelbarrow is the first kind of lever, and the middle of the wheel is the fulcrum. How big is the man's force on the wheelbarrow to lift the rock
A world-class sprinter accelerates to his maximum speed in 4.2s . He then maintains this speed for the remainder of a 100-{\rm m} race, What is the runner's average acceleration during the first 4.2s
Water is pumped into a storage tank from a well delivering 15.0 gallons of water in 34.0 seconds through a pipe of 1.00 in.2 cross-sectional area.
A hypodermic syringe is attached to a needle that has an internal radius of 0.304 mm and a length of 3.05 cm. What force must be applied to the plunger, which has an area of 1.05 cm2
A small spinning asteroid is in a circular orbit around a star, much like the earth's motion around our sun. calculate the equilibrium temperature of the asteroid
The resonant frequency of a certain series RLC circuit is 3.80 kHz, What is the value of the resonant frequency when the capacitance of the circuit is 9.20 µF
The surface temperature of the Sun is about 5800 K. Taking the Sun's radius to be 6.96E+8 m, calculate the power radiated by the sun
An archer shoots an arrow with a velocity of 48.0 m/s at an angle of 46.5° with the horizontal. What is the initial speed of the apple
A trap door, of length and width 1.55 m, is held open at an angle of 65.0° with respect to the floor. what is the torque exerted on the trap door by the rope
Vector A - Vector B=(-51.4m)x, Vector C=(62.2m)x, and Vector A + Vector B + Vector C=(13.8m)x, Find Vector A and express in terms of unit vector x
If a curve with a radius of 87 is perfectly banked for a car traveling 67 , illustrate what must be the coefficient of static friction for a car not to skid when traveling at 84 ?
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