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You have a 500N box and you pull on the box with a rope that is horizontal. The floor is not frictionless. You pull on the box with your rope at a 30 degree angle from the horizontal. You move the box with a constant velocity of 3 m/s. The coefficient of friction is 0.4. a) Draw a free body diagram. b) What is the new tension in the rope (it will not be 200 N).
How much work is done on the car by the engine when accelerating the car from rest to 90m/s, What is the average power delivered by the engine
a classic 1957 chevrolet corvette of mass 1240 kg starts from rest and speeds up with a constant tangential
question an airplane is flying at an altitude of 2500m above the ground when it sees a stranded on a an island 4000m
Light from a laser falling on two slits produces the third-order fringe at an angle of 8.8 degrees. what is the distance between the two slits
A 30-mph wind blows at an angle of 8 degrees to the plane of a signboard that is 12ft long by 2 ft wide. Using CL=0.52 and CD=0.09 Calculate the force acting on the signboard at right angles to the wind direction and the force acting parallel to the ..
A 1026 kg car and a 2210 kg pickup truck approach a curve on the expressway that has a raduis of 264 m. find the normal force on the truck to the highway surface
The binding energy of an electron in a crystal lattice is 1.2 x10^(-4) eV. Use the uncertainty relation to estimate the size of the spread of the electron wave function.
Starting from rest, a disk rotates about its central axis with constant angular acceleration. In 5.0 s, it rotates 45 rad. What was the angular acceleration during this time
In a hydraulic lift, the maximum gauge pressure is 14.3 atm. If the diameter of the output line is 23.7 cm, what is the heaviest vehicle that can be lifted
A passenger plane lands on the runway at 300kmhrô???1. In a glass of water in the cabin, calculate the deceleration of the plane
oe, mass MJ = 78.9 kg, is racing against Tom. When Joe and Tom have the same kinetic energy, Tom is running faster. Find Tom's mass in kg
A think disk of radius R carries a surface charge σ. It rotates with angular frequency ω about the z axis, which is perpendicular to the disk and through its center. What is B along the z axis? What is the magnetic moment of the spinning disk?
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