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Q. As a space craft approaches a planet, the rocket engines on it are fired to slow it down so it will go into orbit around the planet. The spacecraft's mass is 291 kg and the thrust (force) of the rocket engines is 59 N. If the speed of the spacecraft should be decreased by 128 m/s, how long the engines should be fired. (Ignore the change in mass as a result of the rocket engines firing).
Pandora Jewellery has turn into the best choice for ladies all more than the world who desires to express their personal style. The Pandora Bracelets provide a rich array of stylish diamond jewellery developed by artisans utilizing the finest mate..
A ski gondola is connected to the top of a hill by a steel cable of length 680 m and diameter 1.5cm. As gondola comes to the end of its run, it bumps into the terminal and sends a wave pulse along cable. It is observed that it took 14 s for the p..
What is the average induced EMF. what is the magnitude of the velocity of raindrops relative to the car.
A bullet of mass m = 25 g is fired into a wooden block of mass M = 4.5 kg. The block is attached to a string of length 1.5 m. The bullet is embedded in the block, causing block to then swing.
A proton is located at the origin, and a second proton is located on the x-axis at x=6.00 fm. (a) compute the electric potential energy associated with this configuration.
asssume that in a particular vacuum tube the potential of the anode is 340 V higher than that of the cathode. If an electron leaves the surface of the cathode with zero initial speed, what is its speed when it strikes the anode.
A light train is travelling on a straight section of track at a constant speed of 15 rm m/s. As it approaches next station, it starts to slow down at a rate of 5 rm m/s^2 until it stops at the station.
What is resultant force
An object is 22 cm in front of a diverging lens that has a focal length of -13 cm. How long in front of the lens should the object be placed so that size of its image is reduced by a factor of 4.
Drag race tires in contact with an asphalt surface have an extremely high coefficient of static friction. Assuming a constant acceleration and no slipping of tires, estimation the coefficient of static friction needed for a drag racer to cover 1.0 km..
What is the IMA of the jack.
A 64-kg man standing on a scale in an elevator notes that as the elevator rises, the scale reads 834 N. What is the acceleration of elevator.
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