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The coefficient of friction between two materials is 0.25. A 15.0 kg object made of one of the materials is being pulled west along a table made of the other material the force of friction is _N.
A roller coaster (425 kilogram) moves from C (5.00 meter above the ground) to D (26.0 meter above the ground). Determine the change in the car kinetic energy
A tennis ball is struck at the base line of the court, 11.5 m from the net. The ball is given an initialvelocity with a horizontal component equal to 27.0 m/s at an initial elevation of 1.21 m.
Oscillation of a 500 Hz tuning fork sets up standing waves in a string clamped at both ends. The wave speed for the string is 430 m/s. What is the length of the string
An airplane undergoes the following displacements: First, it flies 71 kilometer in a direction 30 degree east of north. find how far the airplane ends up from its starting point
An electron with an initial speed of 4.00×105m/sis brought to rest by an electric field, What was the initial kinetic energy of the electron, in electron volts
A 2.20 kg hoop 2.00 m in diameter is rolling to the right without slipping on a horizontal floor at a steady 2.40{\rm rad/s}. What is the total kinetic energy of the hoop
question a cylindrical tank containing oil with a density of 800 kgm3. the depth is 3.0 meters. above the oil is air
In one day, a 81-kg mountain climber ascends from the 1410-m level on a vertical cliff to the top at 2208 m. The next day, she descends from the top to the base of the cliff, which is at an elevation of 1215 m.
The power radiated by an object is 145 W. If the object were a perfect blackbody radiator (and otherwise was the same) it would radiate 587 W. What is the emissivity of the object
You make 48 pints of pink paint by using 5 pints of red paint for every 3 pints of white paint, use a diagram to find the number of pints of red paint and white paint in your mixture
A block of weight w = 35.0N sits on a frictionless inclined plane, which makes an angle θ = 29.0° with respect to the horizontal, as shown in the figure. (Figure 1) A force of magnitude F = 17.0N , applied parallel to the incline, is just suff..
With what speed in miles/hr (1 m/s = 2.23 mi/hr) must an object be thrown to reach a height of 91.5 m (equivalent to one football field)? Assume negligible air resistance.
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