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1. If you do 100 J of work to elevate a bucket of water, what is its gravitational energy relative to its starting position?
2. Suppose two blocks of ice are heading towards each other. Block A has a mass of 4.24 kg and is traveling at 2.24 m/s. Block B has a mass of
4. 42 kg and is traveling at 2.24 m/s in the opposite direction. After the collision, they are traveling in the same direction and at the same speed. What is the speed they are traveling at?
3. An object has a mass of 8.14 kg and is moving at 5.11 m/s. How much kinetic energy does it have?
4. Two cars have a head-on collision. Both were traveling at 42 m/s toward each other. Car A has a mass of 558 kg. Car B has a mass of 868 kg. After impact, car A is moving backward at 3 m/s. What is car B's velocity after impact?
5. Mrs. Jacobs drops an object from 10 meters. She knows it did 47 Joules of work. What was the mass of the object?
6. Which requires more work? Lifting a 10 kg load a vertical distance of 2 meters or lifting a 5 kg load a distance of 4 meters?
The mean time between collisions in iron is 4.0 × 1015s. What electron current is driven through a 2.5-mm-diameter iron wire by a 0.060V/m electric field
A projectile is fired from point 0 at the edge of a cliff, with initial velocity components of v0x=60 m/s and v0y=175 m/s, What is the magnitude of the velocity of the projectile 21.0s after it is fired
A light ray initially in water enters a transparent substance at an angle of incidence of 43.0°, Calculate the speed of light in the transparent substance
A fisherman reels in 15.0 m of line while landing a fish, How much work does the tension in the line do on the fish
A uniform, solid metal disk of mass 6.50kg and diameter 24.0 cmhangs in a horizontal plane, supported at its center by a verticalmetal wire. You find that it requires a horizontal force of 4.23 Ntangent to the rim of the disk to turn it by 3.34 degre..
A 3.00-kg block starts from rest at the top of a 35.0° incline and slides 2.00 m down the incline in 1.50 s. Find the acceleration of the block. Find the coefficient of kinetic friction between the block and the incline.
An object's velocity is V =ct^3i+dj, where t is time and c and d are positive constants with appropriate units. What is the object's acceleration
Determine the value of the electric potential. calculate the acceleration of the ball when it is 3 cm from the surface and again at the position determined in part b.
suppose you are pulling a large block up an inclined plane. what factors determine how much force is necessary to pull
You measured the mass of a metal ball to be 1.002kg and its volume to be 2.1 L. What is its density of the ball
A jet airplane in level flight has a mass of 8.66 × 104kg and the two wings have an estimated total area of 90.0m2. (a) What is the pressure difference among the lower and upper surfaces of the wings?
monochromatic light strikes a diffraction grating at normal incidence before illuminating a screen 2.10m away. find the distance between the two second-order maxima
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