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Question1
A plate of mass M moves horizontally with speed v on a frictionless table. A mass m is dropped vertically onto and it and soon comes to rest with respect to it. How much energy is necessary to bring the system back up to speed v? Explain intuitively your answer in M>>m limit.
Question2
Mary departs in her boat from Petoskey at 9:00am and travels due north at 8 mi/h. Robert leaves from his home on shore of Beaver Island, 26 mi at an angle of 30 degrees west of north of Petoskey at 10:00am and travels at a constant speed of 6 mi/h. In what direction must Robert be heading to intercept Mary and where and when will they meet?
A boat has a mass of 6800 kg. Its engines generate a drive force of 4050 N, due west, while the wind exerts a force of 860 N, What is the magnitude and direction of the boat's acceleration
I am rising upward in a hot air balloon. I am holding my coffee container and i accidentally let go of it when I am leaning out and enjoying the view. Whats the greatst height the container achieved in its flight
While traveling along a level highway at a speed of 27m/s you shift the vehicle into neutral and find it takes 45 second to slow down to 20 m/s mile per hours.
The needle of a sewing machine moves up and down in the same hermonic motion its driving force comes from a rotating wheel that is powered by an electric motor. how do you imagine that theup-and-down needle comapres with the period of the rotating..
What is the new momentum of the puck. What is the length of pipe.
You find an unlabeled box of fine needles, and want to determine how thick they are. What is the diameter of the needle
A certain toaster has a heating element made of Nichrome resistance wire, What is the final temperature of the heating element
Compute the impedance of a series R-L-C circuit at angular frequencies of ?1= 1000rad/s , ?2= 715rad/s and ?3= 545rad/s, What is the phase angle of the source voltage with respect to the current
A 7650kg iceberg with density 931 kg/m3 is afloat in seawater with density 1030 kg/m3. find the buoyant force on the iceberg
A hot air balloon is rising straight up with a speed of 6.0 m/s. A ballast bag is released from rest relative to the balloon when it is 9.54 m above the ground. How much time elapses before the ballast bag hits ground.
A coil of four circular loops of radius 3.0cm carries a current of 5.0A clockwise, What is the magnetic field at the center of the coil
What is the intensity of the sound waves at point.
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