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A skier is pulled up a slope at a constant velocity by a tow bar. The slope is inclined at 32.5 ° with respect to the horizontal. The force applied to the skier by the tow bar is parallel to the slope. The skier's mass is 48.1 kg, and the coefficient of kinetic friction between the skis and the snow is 0.120. Find the magnitude of the force that the tow bar exerts on the skier.
An object of mass 6.8 Kg is attached to a spring of force constant 1830 N/m. find the maximum velocity the object has during its motion
The ammonia molecule NH3 has a permanent electric dipolemoment equal to 1.31 D, where 1 D = 1debye unit = 3.34 multiplied by10-30 C·m. Calculate the electric potential dueto an ammonia molecule at a point 51.0 nmaway along the axis of the dipole. (S..
X rays diffract from a crystal in which the spacing between atomic planes is 0.193nm . The second-order diffraction occurs at 42.0?
A tow truck is pulling a car out of a ditch by means of a steel cable (Y = 2.0 x 1011 N/m2) that is 8.24 m long and has a radius of 0.402 cm. How much has the cable stretched
A crane which is effectively fixed to ground lifts a box of mass m with constant speed. The arm of the crane is supported at its base by a friction-free pivot. Determine the tension in the supporting cable
consider a carousel 32 feet in diameter. this carousel takes 11 s to accelerate from rest to its operating speed of
A satellite is in a circular orbit around the earth. The period of the satellite is 22 hr.
An Ar+ laser emits radiation at a wavelength of 515 nm, and a power of 7 W. Determine how many argon ions
The front 1.20 m of a 1,350-kg car is designed as a "crumple zone" that collapses to absorb the shock of a collision. What is the magnitude of the average force on the car
A car moves along the x-axis in the positive direction. Find the sign (+,-) of the velocity and acceleration of the car for each situation: 1. The car moves AWAY from the origin and gets FASTER 2.
A curve in a road forms part of a horizontal circle. As a car goes around it at constant speed 14.0 m/s, What is the total horizontal force on the driver
A ball is launched at 21.9 m/s at an angle of 25 degrees above the horizontal from the top edge of a building 55.7 m high. what is its speed when it hits the ground
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