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A football player (m=115g) is sitting on the ground. A playerkicks the ball with a force of 36 N. The force acts over a distanceof 25 cm and is along the direction of motion of the soccerball.
A) What is the speed of the ball after being kicked?B)When the ball reaches a height of 6.5m , it has a speed of4.2 m/s. How much work does the non-conservative force of airresistance do on the ball?
A copper wire is 6.00 m long and has a cross-sectional area of 2.00 10^-4 m2. what is the maximum torque that can act on it
Suppose the projectile is traveling 85.0 m/s at its maximum height of y = 272 m. Explain how much work has been done on the projectile by air friction?
A certain part of an aircraft engine has a volume of 2.6 ft3. Determine how much weight is saved by using aluminum instead of nickel
Two sailboats are approaching a harbor. The velocity of the sloop relative to the schooner is 2.80 m/s in a direction 40.0° east of north. If the sloop has a velocity that is 0.730 m/s due north relative to the harbor, what is the velocity (magnit..
A certain lightbulb filament when hot has a resistance of205 Ω. The potential difference across the filament at acertain instant is standard household voltage, 120 V.
a series rlc ac circuit has resistance r = 200 ohms, inductance l = 0.500 H, capacitance c = 4.00 uf, frequency 60.0 hz, What are the maximum voltages across the elements
Let's say that you have a mass of 45.0 kg, and that you run up a staircase as fast as you can, taking a time of 2.40 s to you raise yourself through a height of 3.00 meters. What is your power output during this process
A 0.24 kg blob of clay is thrown at a wall with an initial velocity of 23 m/s. what is the average force experienced by the clay
A ball is thrown directly downward with an initial speed of 7.55 m/s, from a height of 30.2 m. After what time interval does it strike the ground
Find the speed of sound in a thin rod of copper, which has a sheer modulus of 4.5 1010 Pa and a density of 8.90 103 kg/m3
The work function for iron is 4.50 eV. Find the cutoff wavelength for iron and What is the lowest frequency of light incident on iron that releases photoelectrons from its surface
A child makes a "raft" by inserting a pin perpendicularly into the flat surface of a cork with diameter D. What is the maximum height h of the pin if its tip is completely hidden from view when observed from above the surface of the water
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