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Q1. A world class sprinter accelerates to his maximum speed in 3.80 s. He then maintains this speed for the remainder of a 100 m race, finishing with a total time of 10.30 s. What is the runner's average acceleration throughout the first 3.80 s?
Q2. A ski jumper travels down a slope and leaves the ski track moving in the horizontal direction with a speed of 25 m/s. The landing incline below him falls off with a slope of 35°. Where does he land on incline?
Find the change in internal energy using first law of thermodynamics.
What is magnitude of the change in the magnetic field
A 1.02 liter flask contains a certain quantity of ideal gas at 315 K. Then an equal number of molecules of the same gas are added to the flask, after which the absolute pressure is 1.60 times its original value. What is a final temperature.
A 0.180 kg baseball, travelling 32.0 m/s, strikes catcher's mitt that recoils 13.0 cm in bringing the ball to rest. What was an average force (in newtons) applied by the ball to the mitt.
A 0.150 kg ball is going around in a vertical circle of radius R = 0.300 m at constant speed v. The ball is attached to a mass less ideal string which is attached to a fixed pivot point. If the tension F in the string is greater than 125 N, the st..
What is change in electrical potential energy of electron
A chair of weight 74.0 N lies atop a horizontal floor; the floor is not frictionless. You push on the chair with a force of F = 47.0 N directed at an angle of 41.0^circ below the horizontal and the chair slides along floor.
A loudspeaker of mass 25 {rm kg} is suspended a distance of h = 1.60 {rm m} below the ceiling by two cables that make equivalent angles with the ceiling. Each cable has a length of l = 3.50 {rm m}.
What travel time is required for the landing
Two spherical objects have a combined mass of 200. The gravitational attraction between them is 8.01×10-6 while their centers are 21.0 apart.
The origin of the coordinate system and with a label at their heads. Two of these vectors are given in terms of the unit-vectors I and j as
Find out the magnitude and direction of the displacement
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