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A proton moves along the x-axis according to the equation x= 50t + 10t^2,where x is in meters and t is in seconds. Calculate (a) the average velocity of the proton during the first 3.0s of its motion, (b) the instantaneous velocity of the proton at t=3.0s, and (c) the instantaneous acceleration of the proton at t=3.0s. (d) Graph x versus t and indicate how the answer to (a) can be obtained from the plot. (e) Indicate the answer to (b) on the graph. (f) Plot velocity versus time and indicate on it the answer to (c).
A 818 kg car is going 28 m/s and the driver has to slam on his brakes to prevent an accident. find the change in temperature of the brake pads and rotors
a centrifuge can be used to separate cells from a liquid. to increase the rate at which objects can be separated from
A baseball is bunted down the third-base line leaving the batfrom a height of 0.850m with an initial velocity of 4.00m/s at anangle of 36.87° above horizontal, What are the radiuses of the baseball path curvature
A cannon, placed in the valley, fires a shell at 52 degrees with respect to the horizontal line. The initial speed of the shell is 516 m/s, Calculate the range of the shell
a small circular hole 9.00mm in diameter is cut in the side of a large water tank 24.0m below the water level in the
a 0.06m 3 rigid tank initially contains water at 1.5 mpa with a quality of 20. the tank is heated and a pressure
A49.0 g sample of a conducting material is all that is available. The resistivity of the material is measured to be11 multiplied by 10-8 · m, What must be the diameter of the wire
two point charges lie on the x-axis: .30 micro C at x=.15m and .11micro C at x=.70. find the place where the electric field is zero
An experimenter arranges to trigger two flash bulbs simultaneously, What is the time interval between them according to her
q1. a hunter aims directly at a target on the same level 84.2m. if the bullet leaves the gun at a speed of 193 ms by
A river with the width of 800 m flows due south with a speed of 2.0 m/s. A man steers a motorboat across the river; How much time required to cross the river
A stainless-steel orthodontic wire is applied to a tooth that is out of line by 40 degrees. find the magnitude of the force on the tooth
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