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A 140 g ball moving at 0.35 m/s in the + x-direction is subject to a 0.20 N force in the - y-direction for 2.0 s
1- Find the magnitude of the ball's momentum change.
2- Find the ball's final speed
3- Find the angle between the ball's final velocity and the positive x direction
A farsighted man uses eyeglasses with a refractive power of 3.57 diopters. Wearing the glasses 0.026 m from his eyes, What is the correct contact lens prescription
A turntable 1.90 m in diameter rotates at 78.0 rpm . Two speakers, each giving off sound of wavelength 30.6 cm, find the greatest beat frequency the listener
Water flows from a fire truck through a hose that is 10.7 cm in diameter and has a nozzle that is 2 cm in diameter. what is the gauge pressure in the truck
A garden hose of inner radius 1.1 cm carries water at 1.8 m/s. The nozzle at the end has radius 0.25 cm. How fast does the water move through the nozzle
what is a catapult ? what is the traditional use of a catapult ? when were catapults in greatest use ? what
A horizontal 2.00-m long, 5.00-kg uniform beam that lies along the east-west direction is acted on by two forces. At the east end of the beam, What is the angular acceleration of the beam
A solid cylinder with a mass of 1.5 kg and a radius of 30 cm rotates about an axis through its center. What is the rotaional inertia of the solid cylinder
A gardener pushes a box of tools across a driveway by applying a 20.5- N force that pushes downward at an angle of 34.9 o with respect to the horizontal
The temperature inside a house is 25°C while the temperature outside is 10°C. Approximately how much energy is radiated per second
A ball has a diameter of 3.90 cm and average density of 0.0845 g/cm3. What force is required to hold it completely submerged under water
An astronaut in a satellite says she can just barely resolve two point sources on the Earth, 110km below. Assume λ=540nm, and the pupil diameter of the astronaut's eye to be 5.20mm.
A 65ohms resistor, an 8.0uF capacitor, and a 35 mH inductor are connected in a series in an ac circuit. Calculate the impedance for a source frequency of 300Hz
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