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Q. A 10.0 kg box starts at rest and slides 3.5 m down a ramp inclined at an angle of 20 degrees with the horizontal. if the coefficient of friction between the ramp surface and the crate is 0.18, what is the velocity of the crate at the bottom of the ramp?
Q. A man takes his dog out for a walk. The dog has no legs and is dragged along the sidewalk on a little sled (mass of dog + sled = 13.0kg). The sidewalk exerts a frictional force of 14.0N. If the man pulls the leash at an angle of 55 degrees and the dog moves at constant velocity, what is the coefficient of friction between the sled and side walk?
Find out the magnitude of the charge on the moving particle. The baby soon learns to bounce with utmost amplitude and minimum effort by bending her knees at what frequency.
Use this technique to find formula for the intensity of a sound, in terms of sound level and the reference intensity. There will be a quantity involved in the calculations. When you enter your answer, leave off the unit.
A 0.50-kg object is attached to an ideal massless spring of spring constant 20 N/m along a horizontal, frictionless surface. The object oscillates in simple harmonic motion and has a speed of 1.7 m/s at the equilibrium position.
Find the resultant forces and moments at wrist, biceps muscle force, elbow and shoulder and joint reaction force using 2-D static analysis.
A firefighter at a distance d from a burning building directs a stream of water from a fire hose at angle θi above the horizontal as shown in Figure. If the initial speed of the stream is vi. At what height h does the water strike the building?
A hotel elevator ascends 140 m with a maximum speed of 5.80 m/s. Its acceleration and deceleration both have a magnitude of 1.50 m/s2.
A Sphere on a Horizontal Surface starts from Rest. If the Force is applied facing to the Right at the Top furthest Point of the Sphere from the Horizontal Surface, the Sphere will start experiencing Roll and Slip at the same time. In which directi..
The heat of vaporization of ethyl alcohol is about 200cal/g. If 1.30 kg of it were allowed to vaporize in a refrigerator, how various grams of ice would be formed from 0°C water.
Two people stand 3 m in front of large plane mirror and space 5m a part in dark room at what angle of incidence should one of them shine a flashlight on the mirror so that reflected beam directly strickes the other person.
A car starts from rest and travels for 10s with a uniform acceleration of +2.4 m/s2. The driver then applies the brakes, causing a uniform negative acceleration of -2.0 m/s2.
A plate of glass with parallel faces having a refractive index of 1.57 is resting on the surface of water in tank. A ray of light coming from above in air makes an angle of incidence 34.5 degrees with normal to the top surface of the glass.
A 2.46 x 10-2-kg block is resting on a horizontal frictionless surface and is attached to a horizontal spring whose spring constant is 110 N/m. The block is shoved parallel to the spring axis and is given an initial speed of 10.4 m/s, while spring is..
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