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Question1
A horizontal 800-N merry-go-round of radius 1.20 m is started from rest by a constant horizontal force of 45 N applied tangentially to merry-go-round. Find out kinetic energy of the merry-go-round after 2.0 s.
Question2
A uniform 1.4 kg rod that is 0.75 m long is suspended at rest from the ceiling by two springs, one at each end of the rod. Both springs hang straight down from the ceiling. The springs have identical lengths when they are unstretched. Their spring constants are 59 N/m and 33 N/m. Find the angle that the rod makes with the horizontal.
Question3
A superhero flies 335 m from the top of a tall building at an angle of 25 below the horizontal.
What is the horizontal component of the superhero's displacement? Draw the vectors to scale on a graph to determine the answer.
A raft is made out of 10 logs that are 56cm in diameter and are 6.1m long. How many people (68kg each) can stand on the raft with out getting there feet wet
Sketch a force diagram for the desk.
At an accident scene on a level road, investigators measure a car's skid mark to be 68-m long. It was a rainy day and the coefficient of friction was estimated to be 0.38. Make use of these data to determine out the speed of the car when the drive..
question1two boats each capable of moving in still water at a constant velocity v 6 ms place out to cross a river of
Fraternal twins Jack and Jill are sent in two different ships to fetch water from the planet Kusbane that is 20 lightyears away. what is the age difference between Jack and Jill when Jack's ship arrives at Kusbane
The larger the mass of a star, the shorter its Main Sequence lifetime becomes. Estimat the Main Sequence lifetime of a star with a mass of 6 Msolar
A major motor company displays a die-cast model of its first automobile, made from 5.60 kg of iron. To celebrate its hundredth year in business.
A light bulb is connected to a 120 V wall socket. The current in the bulb depends on the time t according to the relation I = (1.414 A) sin[ (125.6 Hz) t ]. What is the average power delivered to the light bulb
A car travels a straight road at 130 km/h for 30min then at 50 km/h for 10min. What is the average speed for the entire trip
A rocket burns fuel at a rate of 200 kg/s and exhausts the gas at a relative speed of 4.0 km/s. Find the thrust of the rocket
A step-down transformer (turns ratio = 1:8) is used with an electric train to reduce the voltage from the wall receptacle to a value needed to operate the train, What is the current in the primary coil?
A dentist's mirror is placed 2.1 cm from a tooth. The enlarged image is located 5.7 cm behind the mirror. (a) What kind of mirror (plane, concave, or convex) is being used
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