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Q1. A man lifts a 22.4 kg bucket from a well and does 6.7 kJ of work. The acceleration of gravity is 9.8 m/s2.How deep is the well? Assume that the speed of the bucket remains constant as it is lifted. Response in units of m
Q2. Consider the 618 N weights held by two cables shown below. The left-hand cable had tension T2 and makes an angle of 43? with the ceiling. The right-hand cable had tension T1 and makes an angle of 50? with the ceiling.
a) What is the tension in the cable labeled T1 slanted at an angle of 50??
Respond in units of N
b)What is the tension in the cable labelled T2 slanted at an angle of 43??
Reply in units of N
Q3. A diver 40 m deep in 10 degree Celcius fresh water exhales a 0.50-cm-diameter bubble. What is the bubble's diameter just as it reaches the surface of the lake, where the water temperature is 20 degrees Celcius? Assume that the air bubble is always in thermal equilibrium with the surrounding water.
During a testing process, a worker in a factory mounts a bicycle wheel on a stationary stand and applies a tangential resistive force of 115N to the tire's rim. what force must be applied to the chain
Cations are removed from the exchange complex of a 1 kg oven-dry soil sample by ammonium (NH4+) substitution. What is the cation exchange capacity of the soil
A loudspeaker receives 8.0 W of power from an audio amplifier, and turns 3 % of that power into sound waves. What is the decibel intensity at this distance
A football is kicked at an angle of 37.0 degrees with a velocity of 20.0 m/s. calculate the velocity at the maximim height
A Van de Graa? generator has a potential di?erence of 2.35 MV between the belt and the outer shell. What minimum power is needed to drive the moving belt
The skis have a thrust of 220 . Sam's speed at the bottom is 45.0. Illustrate what is the coefficient of kinetic friction of his skis on snow?
A 0.51T magnetic field is perpendicular to a circular loop of wire with 50 turns and a radius of 13cm, what is the magnitude of the induced emf
A real object is placed at the zero end of a meterstick. A large concave mirror at the 100 cm end of the meterstick forms an image of the object at the 70.0cm position. A small convex mirror placed at the 20 cm position forms a final image at the ..
The block is acted upon by its weight w=200lb, a horizontal force Q=600 lb and pressure P exerted by the inclined plane. The resultant R of these forces is up and parallel to the incline there by sliding the block up it. Establish P and R.
What is the tension in the cord in the original situation. A cube of ice is taken from the freezer at -9.3°C and placed in a 95 g aluminum calorimeter filled with 297 g of water at room temperature of 20°C. The final situation is observed to be all..
What voltage must be applied to the 5.00 µF capacitor of a heart defibrillator to store 600 J in it, Find the amount of stored charge
A 1.00×104kg railroad car is rolling at 3.00m/swhen a 7000kg load of gravel is suddenly dropped in. What is the car's speed just after the gravel is loaded
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