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A 125-kg (including all the contents) rocket has an engine that produces a constant vertical force (the thrust) of 1720 N. Inside this rocket, a 15.5-N electrical power supply rests on the floor.
a) Find the acceleration of the rocket.
b) When it has reached an altitude of 120 m, how hard does the floor push on the power supply? (draw a free body diagram of the power supply)
An electron is released from rest at the negative plate between two 10.0 cm long parallel plates separated by 1.00 cm, What is the electron's velocity when it strikes the other plate
What are memory tricks, and explain in theoretical terms why they work?
A speedboat moving at 30 m/s approaches a no-wake buoy marker 100 m ahead. The pilot slows the boat with a constant acceleration of negative 3.5 m/s^2 by reducing the throttle. How long does it take boat to reach the buoy.
A 13.1 k? resistor and a capacitor are connected in series and then a 12.0 V potential difference is suddenly applied across them, Calculate the time constant of the circuit
You are holding a compass 3.50 m from a long straight electrical supply wire that is carrying a direct current perpendicularly to the local direction of the Earth's magnetic field. find the magnitude of the current carried by the wire
A real object is placed at the zero end of a meterstick. A large concave mirror at the 100 cm end of the meterstick forms an image of the object at the 70.0cm position. A small convex mirror placed at the 20 cm position forms a final image at the ..
A 96N grocery cart is pushed 10m along an aisle by a shopper who exerts a constant horizontal force of 40-N. If all frictional forces are neglected and cart starts from rest, what is the grocery cart's final speed.
An object at rest on a flat, horizontal surface explodes into two fragments, one five times as massive as the other one. The lighter fragment gains the velocity of 10.0m/s in the left direction right after the explosion.
Your roommate is working on his bicycle and has the bike upside down. He spins the 54.0cm -diameter wheel, What is the pebbles speed and acceleration
Suppose the earth suddenly came to halt and ceased revolving around the sun. What would be the earth's speed as it crashed
a partice moves along the path y=-0.090x^6(-7)meters with a constant speed of 4 m/s. assume dx/dt>_0. Determine the cartisian components of velocity and acceleration at x= - 2m
One liter of water is 41C is used to make iced tea. How much ice at 0 C must be added to lower the temperature of the tea to 17C? The specific heat of water is 1 cal/g C and latent heat of ice is 79.7 cal/g. Reply in units of g.
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