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Q1. A 10.15 kg weather rocket generates a thrust of 177.03 N. The rocket, pointing upward, is clamped to the top of the vertical spring. The bottom of the spring, whose spring constant is 329.0 N/m, is anchored to ground. Originally, before the engine is ignited, the rocket sits at rest on top of the spring. After the engine is ignited, what is the rocket's speed when the spring has stretched 19.00 cm past its natural length? What would be the rockets speed after travelling the distance if it weren't tied down to spring?
Q2. The rms electric field of an electromagnetic wave increases from 278 to 874 N/C. find out the wave intensities for the two values of the electric field.
What is the focal length of this mirror. If the object is 25 cm in front of the mirror, what is the image distance.
Suppose that a structure of arbitrary complexity has a number of forces applied to it (at various points) and yet is in static equilibrium. The principle of virtual work allows one to write an equation that relates the applied forces.
What is tension T in each of the cables
Find out the type of mirror and how far the object is
What is the acceleration of the truck. If it starts 4.50 m from the lower edge of the roof, how fast would the toolbox be moving just as it reaches the edge of the roof if the kinetic friction force on it is 18.0 N.
What is speed of the resulting ball of clay
Assume that plane continues to fly with the similar velocity
A 0.39 kg iron horseshoe that is initially at 745°C is dropped into a bucket containing 24 kg of water at 46°C. What is the final equilibrium temperature? Neglect any heat transfer to or from the surroundings.
Now, as both pipes vibrate at their fundamental frequencies, the beat frequency of 17 Hz is heard. How many centimeters were cut off the end of the second pipe? The speed of sound is 333 m/s.
find out the magnitude of an acceleration
A thin, flexible metal plate attached at one end to the platform, can be used to measure mass. When the free end of the plate is pulled down and released, it vibrates in simple harmonic motion with a period that depends on the mass attached to the pl..
W hat is the magnitude of an average force exerted on the superball by the sidewalk. what is force caused by the water on the bottom.
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