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What is the launch speed of a projectile that rises vertically above the Earth to an altitude equal to one Earth's radius before coming to rest momentarily? (Astronomical data needed for this problem can be found on the inside back cover of the text. Ignore air resistance.) km/s
A pipe 0.026 m in diameter and 0.22 m long can transfer 3476 J of heat per second with a temperature difference across the ends of 7?C. Compare this performance with the heat transfer of a solid silver bar of the same di- mensions by finding the rati..
A hockey puck is struck with a force of 40N in an ice hockey arena. Assuming the ice provides a constant frictional force of 20N, determine the mass of the puck
A firehose 15 m long is uncoiled by pulling the nozzle end horizontally along a frictionless surface at the steady speed of 2.9 m/s. How much work has been done on the hose
Your projectile launching system is partially jammed. It can only launch objects with an initial vertical velocity of 42.0 m/s, What horizontal velocity do you need to program into the system
In a different car, the distance the dummy moves while being stopped is reduced from 0.750 m to 0.270 m, calculate the average force on the dummy as that car stops
You charge an initially uncharged 62.7-mF capacitor through a 46.9-? resistor by means of a 9.00-V battery having negligible internal resistance. Find the time constant of the circuit. What is the charge of the capacitor 1.45 time constants after the..
The coefficient of kinetic friction for wood sliding on wood is 0.20. Illustrate what is the speed of the bullet?
A 1 uF capacitor is charged when it is connected across a 9 V battery, Find the final charge and the voltage across the plates for the 1 uF and 2 uF capacitor
A farsighted man uses eyeglasses with a refractive power of 1.90 diopters. Wearing the glasses 0.03 m from his eyes, What is the correct contact lens prescription, in diopters
A water heater consisting of a metal coil that is connected across the terminals of a 12-V power supply is able to heat 220 mL of water from room temperature (20°C) to boiling point in 50 s. What is the resistance of the coil? (When entering units, u..
question1a particle of mass m is attracted towards the origin under an influence of a force fmax3.a find out potential
One force acting on a machine part is F = ( - 5.00 N) i hat+ (4.00 N) j hat. The vector from the origin to the point where the force is applied is r = (- 0.450m) i hat + (0.150m) j hat , Calculate the torque produced by this force
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