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Q. A placekicker is about to kick a field goal. The ball is 27.1 m from the goal post. The ball is kicked with an initial velocity of 19.7 m/s at an angle θ above the ground. Between what two angles, θ1 and θ2, will the ball clear the 2.9-m-high crossbar? (Hint: The following trigonometric identities may be useful sec θ = 1/(cos θ) and sec2 θ = 1 + tan2 θ.)
Q. A mass of 2.62 kg stretches a vertical spring .315 m. if the spring is stretched an additional .130 m and released, how long does it take to reach the new equilibrium position?
W hat is lumberjacks speed relative to the shore
If the beam now strikes the top of a building standing directly at the water's edge, find out the height of the building.
If a person radiates about 66 W of power at room temperature, how long does it take for person to radiate away the energy acquired by consuming a 230 Calorie doughnut.
What is the speed of the arrow as it leaves the bow.
A 20 kg block is stacked on top of the 20 kg block. Both blocks are glued together. What is the magnitude F of force, acting horizontally on the two blocks, that is required to make the two blocks start to move.
A 2kg ball traveling to the right with a speed of 4 m/s collides with a 4 kg ball traveling to the left with a speed of 2 m/s. The total momentum of the two balls after the collision is what.
New physics student having trouble with hw, not sure how to set this up or find the answer. Throw a ball straight up with an initial vel. of 18.5m/s. if ball is caught at the same height it was released, and then compute the max. Height achieved b..
A ferry boat transports tourists among three islands. It sails from the first island to the second island, 4.7 km away, in a direction 37.0° north of east. It then sails from the second island to the third island in a direction 69.0° west of north..
The displacement of an object moving under uniform acceleration is some function of time and the acceleration. Suppose we write this displacement as s=ka^mt^n, where k is the dimensional constant. Show by dimensional analysis that this expression ..
Find out the magnetic induction at a point
A person of mass 75 stands at the center of a rotating merry-go-round platform of radius 2.8 and moment of inertia 920. The platform rotates without friction with angular velocity 1.78. The person walks radially to the edge of the platform. Compute a..
The pulley is located so that the string makes a 45 degree angle with the beam. The beam is uniform, 5 meters long, and has weight. The professor stands 2 meters from the pivot point and has weight.
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