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A chair of weight 150 N lies atop a horizontal floor; the floor is not frictionless. You push on the chair with a force of F = 44.0 N directed at an angle of 38.0 degree below the horizontal and the chair slides along the floor. Using Newton's laws, find the magnitude of the normal force that the floor exerts on the chair.
A conical pendulum is formed by attaching a 0.400kg ball to a 1.00m -long string, then allowing the mass to move in a horizontal circle of radius 40.0cm, What is the ball's angular velocity, in rpm
Tarzan, with a mass of 80.0 kg, wants to swing across a ravine on a vine, but the cliff on the far side of the ravine is 0.900 m higher than the cliff where Tarzan is now, How fast is Tarzan going at the bottom of his swing
A 1100 kg car carrying four 84 kg people travels over a rough "washboard" dirt road with corrugations 4.0 m apart which causes the car to bounce on its spring suspension. By how much does the car body rise on its suspension owing to this decrease i..
If the lady walks at a constant speed of 3 m/s relative to the raft, determine what is the total kinetic energy of the system (lady plus the raft)? Determine what is the kinetic energy if the raft is tied to the pier
A disk of radius 40cm is spinning at a constant angular velocity of 30radian/s. Find the acceleration of a point on the rim of the disk
To test the quality of a tennis ball, you drop it onto the floor from a height of 4.02 m. what is its average acceleration during that contact
Under controlled darkened conditions in the laboratory, a light receptor cell on the retina of a person's eye can detect a single photon of light of wavelength 505 nm, What is the intensity (in W/m^2) delivered to a rod
while standing in a low tunnel you push up on the ceiling with a force of 100N. your mass is 70kg. What force does the floor exert on you
A person of mass 75 kg stands at the center of a rotatingmerry-go-round platform of radius 2.5m and moment of inertia 1100 kgm2. Calculate the rotational kinetic energy of the system
A parallel plate capacitor is connected to a battery. The space between the plates is filled with air. Find the electric field inside the dielectric
question the pressure volume and temperature of a mole of an ideal gas are related by the equation pv 8.31t where p is
If the lattice constant of the FFC structure is 4.75A, what is the surface density of atoms for a (100) plane
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