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A fighter jet is launched from an aircraft carrier with the aid of its own engines and a stream-powered catapult. the thrust of its engine is 2.3 x 10^5 N . in being launched from rest it moves through a distance of 87 m and has kinetic energy of 4.5 x 10^7 J at lift-off. what is the work done on the jet by the catapult?
A small ferryboat is 4.00 m wide and 6.00 m long. When a loaded truck pulls onto it, the boat sinks an additional 3.50 cm into the river. What is the weight of the truck
Given the mass of the rubber in the balloon is 1.40 g, what is the net vertical force on the balloon if it is let go, Calculate the buoyant force on a 2.00 L helium balloon.
At one instant a bicyclist is 50 m due east of a park's flagpole, going due south with a speed of 9 m/s. Then, 24 s later, the cyclist is 45 m due north of the flagpole, going due east with a speed of 20 m/s. For the cyclist in this 24 s interval,..
A horizontal circular platform rotates counterclockwise about its axis at the rate of 0.887 rad/s. Calculate the total angular momentum of the system
A photon with wavelength 0.02680 nm strikes a free electron that is initially at rest. What is the de Broglie wavelength of the electron after its collision with the photon
You accidentally drop a pen from 1.1 m above the floor. How long does it take for the pen to reach the floor
A person wears a hearing aid that uniformly increases the sound level of all audible frequencies of sound by 27.8 dB. What is the intensity delivered to the eardrum
You have a 300nF capacitor and wish to combine it with one other to make a combined capacitance of 2.50uF. How large a capacitor do you need
Two point charges are on the y-axis. A 5.0 µC charge is located at y = 1.40 cm, and a -2.30 µC charge is located at y = -1.60 cm. Find the total electric potential at the origin
A slide projector needs to create a 86 cm high image of a 2.0 cm tall slide, What focal length does the lens need and How far should you place the lens from the slide
An oscilloscope shows a steady sinusoidal signal of 5 Volt peak to peak, which spans 5 cm in vertical direction on the screen. What will be observed on the oscilloscope screen
Two carts on a frictionless air track are made to travel toward each other. As they collide they stick together. if the cart on the left has a mass of 250 grams and is moving at 0.2 meters per second to the right.
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