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Q1. 16.8-kg sled is being pulled across a horizontal surface at a constant velocity. The pulling force has a magnitude of 85.6 N and is directed at an angle of 34 ° above horizontal. Establish the coefficient of kinetic friction.
Q2. Two horizontal forces, 218 N and 157 N, are exerted in opposite directions on a crate. What is the net horizontal force on the create? Be sure to indicate the direction of the net force. (Assume that the 218 N forces are in the positive direction.)
q1. a positively charged particle of mass 6.00 10-8 kg is travelling due east with a speed of 25 ms and enters a 0.46 t
A 56.0 kg person jumps from rest off the 9.0 m high tower straight down into the water. Neglect air resistance throughout the descent. She comes to rest 3.40 m under the surface of the water. Find out the magnitude of the average force that the water..
A physics student in a hot air balloon ascends vertically at constant speed. suppose the following four forces that arise in this situation.
the position of a cart that is oscillating on a spring is given by the equation x= 12.3 cm cos [(1.26 s-1)t], velocity and acceleration of the cart
Two loudspeakers emit sound waves along the x-axis. The sound has maximum intensity when the speakers are 23cm apart. What is the wavelength of the sound
The objective lens of a telescope is a symmetric glass lens with 100cm radii of curvature. The eyepiece lens is also a symmetric glass lens. What are the radii of curvature of the eyepiece lens
When four people with a combined mass of 300 kg sit down in a 2.0 103-kg car, they find that their weight compresses the springs an additional 0.65 cm. What is the frequency of the car's vibration
Suppose you stand with one foot on ceramic flooring and one foot on wool carpet, making contact over an area of 80.0cm^2 with each foot. Carpet and ceramic are 2.00cm thick and are 10C on their bottom sides.
An electron in an oscilloscope is accelerated as a result of the potential difference between the cathode and anode. determine the voltage drop from cathode to anode
A 1300-kg car moving on a horizontal surface has speed v = 55km/h when it strikes a horizontal coiled spring, What is the spring stiffness constant of the spring
A 3.50-m-long, 360kg steel uniform beam extends horizontally from the point where it has been bolted to the framework of a new building under construction, What is the magnitude of the total torque due to the worker and the force of gravity
Find out the normal force exerted on the crate by the elevator.
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