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A rocket is out in space, far away from any planet. At a certain time, it has a mass of 2.8 x 105 kg, most of which is fuel. The engine is turn on for 160 s while fuel is consumed at a constant rate of 450 kg/s, then the engine is turned off again. The speed of exhaust from the engine relative to the rocket is 5.00 km/s. What is the rocket\'s thrust force?
After the engine is turned off, what is the new mass of the rocket?
How much faster is the rocket going after the engine is turned off compared to before the engine is turned on?
Coherent light with wavelength 546 nm passes through two very narrow slits, and the interference pattern is observed on a screen the distance of 3.00 {rm m} from the slits. The first-order bright fringe is a distance of 4.86 {rm mm} from the center o..
A stone with a mass of 0.600kg is attached to one end of a string 0.800m long, Find the maximum speed the stone can attain without breaking the string
An object moves 20 m east in 30 s and then returns to its starting point taking an additional 50s. what is the average speed of the object
The bullet strikes a block of wood and penetrates to a depth of 15 cm. What resistive force (assumed to be constant) does the wood exert on the bullet? Explain how long does it take the bullet to come to rest?
A ball is dropped from a height of 1.50 m and rebounds to a height of 1.20 m. Approximately how many rebounds will the ball make
Two cylindrical bars, each with diameter of 2.30 cm, are welded together end to end. compute the resistance between the ends of the welded bar
Determine the tension in an elevator cable if the 2000 kg elevator is accelerating upward with an acceleration of 1.8 m/s^2
A stunt man whose mass is 70 kg swings from the end of a 3.10 m long rope along the arc of a vertical circle. Assume that he starts from rest when the rope is horizontal; find the tensions in the rope that are necessary to make him follow his circ..
A jet pilot takes his aircraft in a vertical loop, as seen in figure below. If the jet is moving at a speed of 1450 km/hr at the lowest point of the loop, Determine the minimum radius of the circle
Male mosquitoes in the mood for mating find female mosquitoes of their own species by listening for the characteristic "buzzing" frequency of the female's wing beats. How many wing beats occur in one minute
a cylindrical resistor of radius 1.0 mm and length of 1.0 cm has resistance of 10 ohms. calculate the uniform current density in the resistor when the power of the resistor is 1 watt
A string is wrapped tightly around the circumference of a wheel with a mass of 1.23 kg and a radius of 0.324 m. What is the moment of inertia of the wheel
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