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A 315-g model boat floats on a pond. The wind on its sail provides a force of 1.6 N that points 20° north of east. The drag force of the water on the boat is 0.65 N, toward the west. If the boat starts from rest and heads east for a distance of 2.7 m, how fast is it moving?
the atomic bomb dropped on hiroshima had an explosive energy equivilent to that of 2.1 x 104 tons of tnt or 8.82 x 1013
A 4.5kg dog stands on an 18 kg flatboat at distance D = 6.10m from the shore. It walks 2.4 m along the boat toward shore and then stops. Assuming no friction between the boat and the water, find how far the dog is then from the shore.
Suppose a 1.83-g nugget of pure gold has zero net charge. What would be its net charge after it has 1.92 % of its electrons removed?
If each rock strikes the fixture traveling at 10.0 {rm m}/{rm s} horizontally and rebounds at 2.00 {rm m}/{rm s} backwards, find out how high above the lowest point does the impact make your light fixture swing?
An automobile has a mass of 1690 kg and a velocity of 23.8 m/s. It makes a rear-end collision with a stationary car whose mass is 2100 kg. determine how far the cars skid before coming to rest
What is the frequency of string that was tightened.How high does it rise above the ground.
A stalactite on the roof of a cave drips water at a steady rate to a pool 3.8 below. What is the velocity of the second drop when the first drop hits the pool
The mass of the ball is 1.65 kg, and the mass of the block is 2.27 kg. The length of the wire is 1.23 m. What is the algebraic expression for the speed of the ball just before the collision with the block
A 100-m-long train accelerates uniformly from rest. If the front of the train passes a railway worker 166-m down the track at a speed of 21 m/s, what will be the speed of the last car as it passes the worker.
Gravity fed intravenous infusions are made possible by hanging a bag of fluid above the patient. If blood pressure is 18 mm Hg above atmospheric pressure, find the minimum height of the bag such that fluid flows into the body. Assume the density of t..
A man starts form rest at the top of a frictionless spherical surface and slides into water before. Find at what angle does the person leave the surface
A mass on a spring has a angular oscillation frequency of 2.81rad/s. what is the potential energy stored in the mass-spring system when t=1.42s
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