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In a drag race, the position of a car as a function of time is given by x=bt2, with b = 2.045m/s2 . In an attempt to determine the car's velocity midway down a 400-m track, two observers stand at the 165-m and 235-m marks and note the time when the car passes. What value do the two observers compute for the car's velocity over this 70m stretch?
1. a student standing on the ground throws a ball straight up. the ball leaves the students hand with a speed of 15.0
A uniform spherical shell of mass 8.90 {\rm kg} with diameter46.0 {\rm cm} has four small masses of 0mass 2.40 {\rm kg} attached to its outer surface and equally spaced around it. This combination is spinning regarding an axis running during the cent..
A ball bearing is dropped from rest at a point A. At the instant it passes a mark 4.0 m below A, another ball bearing is released from rest from a position 5.0 m below A, How far does the second bearing fall in that time
Hulk jumps a total distance of 102m and reaches a maximumheight of 52m, what was his initial velocity, both magnitude and direction
The molar mass of oxygen gas is 32.0 x 10^-3 kg/mol. If the gas is at 16 degrees C, find the root-mean-square speed for an oxygen molecule
A rock is travelling in a horizontal circle due to a string with a tension of 100.5 N that is 2.0 m long. What is the tangential speed of the rock
A 150g ball and a 250g ball are connected by a 34cm long, massless, rigid rod. The balls rotate about their center of mass at 130 . what is the speed of ball of 150 g.
A car travels on a long, straight highway at a constant speed of 30 m/s when it passes a stationary police motorcycle. How far will the motorcycle travel before it catches the car
A horizontal wire carries a current I1=80 A. A secondwire is suspended parallel to it. If the second wire carries 20 Aand has a mass per unit length of 0.2 g/m,
air becomes a conductor if the electric field across it exceeds 3.0times 106vm. what is the maximum charge that can be
a show that the intensity i the energy crossing unit areaper unit timeis the product of the energy per unit volume u
Define how Pascal's law addresses the pressure in a fluid at different heights (or depths) before addressing the question and would you apply it in this case
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