Block located on a horizontal frictionless floor
A 4.58 kg block located on a horizontal frictionless floor is pulled by a cord that exerts a force F=11.40 N at an angle theta=30.0 degrees above the horizontal. What is the speed of the block 5.50 seconds after it starts moving?
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The overall heat transfer coefficient is 280 W/ m2· °C. Estimate the maximum flow rate of oil that may be cooled, assuming the flow rate of water is fixed at 230 kg/h.
Write a balancedchemical equation that shows the reactionthat occurs when an aqueous solution of BaCl2 reacts with anaqueous solution of Na2SO4 to form aqueous sodium chloride andsolid BaSO4.
When the ball hits the wall, the horizontal component of its velocity is reversed; the vertical component remains unchanged. (Ignore any effects due to air resistance.)How long was the ball in the air before it hit the wall?
A particle moves in the x-y plane such that its postion is defined by r=[(2t)i+(4t^2)j]ft, where t is in seconds. Determine the radial and transverse components of the particle's velocity and acceleration when t=2s.
Boiling water at atmospheric pressure is often not enough to kill bacteria. Some bacteria can survive up to 120 degrees C. Sterilization is often performed by pressurizing water to increase its boiling point.
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A rifle with a weight of 30 N fires a 5.0g bullet with a speed of 300m/s. If a 700 N man holds the rifle firmly against his shoulder, find the recoil speed of the man and rifle.
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