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The tub of a washer goes into its spin-dry cycle, startingfrom rest and reaching an angular speed of 4.0 rev/s in 7.0 s.At this point the person doing the laundry opens the lid, and asafety switch turns off the washer. The tub slows to rest in9.0 s. Through how many revolutionsdoes the tub turn during this 16 sinterval? Assume constant angular acceleration while it is startingand stopping.
The football started on the ground 63yrds from the base of the goal posts and just barely cleared the 10ft high bar. How long after the ball was struck did it past through the goal posts
A sinusoidal electromagnetic wave from a radio station passes perpendicularly through an open window that has area of 0.500m2. How much energy does this wave carry through the window
A wave of amplitude 0.30 m interferes with a second wave of amplitude 0.20 m. What are the (a) largest and (b) smallest absolute values of the resultant displacement that can occur, and under what conditions will these maxima and minima occur?
Your car's fan belt turns a pulley at 3.00 rev/s . When you step on the gas for 1.25s , the rate increases steadily to 5.60 rev/s. Through what angle did the pulley turn while accelerating
A 61.5-kg person, running horizontally with a velocity of +3.99 m/s, jumps onto a 16.2-kg sled that is initially at rest. Ignoring the effects of friction during the collision, find the velocity of the sled and person as they move away
question1all through a balloon ascension wearing an oxygen mask you calculate the weight of a calibrated 5.50-kg mass
In a summer day is the outside temperature is 100oF, what will be the temperature in centigrade scale (oC) and on the Kelvin scale
A block of mass 0.78 kg is suspended by a string which is wrapped so that it is at a radius of 0.069 m from the center of a pulley. Calculate the amount of energy dissipated up to that point
The primary coil of a transformer has N1= 300 turns, and the secondary coil has N2= 1810 turns. find rms voltage is developed across the secondary coil?
A student holds a tuning fork oscillating at 256 Hz. He walks toward a wall at a constant speed of 1.20 m/s. What beat frequency does he observe between the tuning fork and its echo
the elimination of the Linens Department will result in a 10% decrease in the sales of the Hardware Department. If the Linens Department is dropped, illustrate what will be the effect on the net operating income of the company as a whole?
A car moving at 10.0 m/s encounters a bump that has a circular cross-section with a radius of 30.0 m. when the car is at the top of the bump
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