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A 3.00-kg crate slides down a ramp. The ramp is 1.00 m in length and inclined at an angle of 30.0o. The crate starts from rest at the top, experiences a constant friction force of magnitude 5.00 N, and continues to move a short distance on the horizontal floor after it leaves the ramp. a) Use energy methods to determine the speed of the crate at the bottom of the ramp. b) How far does the crate slide on the horizontal floor before coming to rest if it continues to experience a friction force of magnitude 5.00 N? c) A cautious worker decides that the speed of the crate when it arrives at the bottom of the ramp may be so large that its contents may be damaged. Therefore, he replaces the ramp with a longer one such that the new ramp makes an angle of 25.0o with the ground. What is the speed of the crate at the bottom of this new ramp? Does the new ramp reduce the speed of the crate as it reaches the ground?
What is the flow speed of the medicine through the needle. What is the least force the nurse needs to apply to the syringe.
A horizontal force, F1= 75N, ad a force, F2=15.4N acting at an angle of theta to the horizontal, are applied to a block of mass m= 2.9kg, what is normal force
A mass m orbits around a planet of mass M in a parabolic orbit of the form y = x^2/(4L), which has focal length L. Find the angular momentum in 3 different ways: a) Find the speed at closet approach.
To fill a child's inflatable wading pool, you use a garden hose with a diameter of 2.90 cm. Water flows from this hose with a speed of 1.50 m/s. How long will it take to fill the pool to a depth of 25.0 cm if the pool is circular and has the diame..
Problem on a hare and a tortoise battle
A small piece of dust of mass m = 1.50g travels horizontally through an electric air cleaner in which the electric field is 498N/C. The electric force on the particle is equal to weight of the particle.
Cars A and B are traveling around the circular race track. At the instant shown, A has a speed of 78ft/s, Determine the relative acceleration of car A with respect to car B at this instant
You want to shoot a 19cm long arrow parallel to this axle and through the wheel without hitting any of spokes. Suppose that the arrow and the spokes are very thin.
What is the total electric flux due to these two point charges through a spherical surface centered at the origin and with radius r3 = 2.70 m?
An ice-making machine inside a refrigerator operates in a Carnot cycle. It takes heat from liquid water at 0.0 degrees Celsius, How much heat |Q_H| is rejected to the room
A cord connected at one end to a block which can slide on an inclined plane has its other end wrapped around a cylinder resting in a depression at the top of the plane . Determine the speed of the block after it has traveled 1.80 along the plane, ..
An airplane is flying through a thundercloud at a height of 2400 m. (Flying at this height is very dangerous because of updrafts, turbulence, and the possibility of electric discharge.)
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