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A 15 N horizontal force pushes a block weighing 4.8 N against a vertical wall .The coefficient of static friction between the wall and the block is 0.74, and the coefficient of kinetic friction is 0.42. Assume that the block is not moving initially. In unit-vector notation (Fx i + Fy j), what is the force on the block from the wall?
an airplane travels 85 km,62degrees north of east. Its displacement is represented by the vector A in the drawing
A resonant circuit in a radio receiver is tuned to a certain station when the inductor has a value of 0.321 mH and the capacitor has a value of 22.4 pF. Calculate the frequency of the radio station
q1. sphere pendulum has mass of 1.5 kg attached to a cord length of 11.5 m sphere is released from rest while cord
Two balls of masses Ma= 45 g and Mb= 65 g, are suspended. The lighter ball is pulled away to a 66 degree angle with the vertical and released. What is the velocity of the lighter ball before impact
Two current-carrying wires are exactly parallel to one another and both carry 3.5 A of current. What is the direction of the magnetic force caused by wire 2 on wire 1
Suppose the pressure in a container of soda is 15 atm. At 25oC, the Henry's Law constant for CO2 in water is 1.61 x 103 atm. Estimate the mole fraction of dissolved carbon dioxide in the soda
A laser emits a narrow beam of light. The radius of the beam is 3.9 mm, and the power is 3.6 mW. What is the intensity of the laser beam
A 0.060 kg handball is thrown straight toward a wall with the speed of 14 m/s. It rebounds straight backward at a speed of 6.5 m/s. If the ball is in contact with wall for 3.0 ms, what average force is exerted on the wall by the ball.
A tractor tows a plane from its airport gate, doing 8.9MJ of work. How far does the tractor move the plane
Using your knowledge of statics, discuss briefly why the magnitude and direction of the knee reaction force varies with the amount of lower leg flexion and the amount of added weight.
The resolving power of a microscope depends on the wavelength used. If you wanted to "see" an atom, a wavelength of approximately 1 × 10-11 m would be required.
A gas with initial conditions (P,V,T)i expands isothermally until the final volume=8.192 times the initial volume, find the ratio of the final pressure to the intial pressure
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