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A quantity of liquid water comes into equilibrium with the air in a closed container, without completely evaporating, at a temperature of 25.0 °C. How many grams of water vapor does 9 liters of the air contain in this situation? The vapor pressure of water at 25.0 °C is 3.1690 kPa. (The molar mass of water is 18.0153 g/mol.)
Two charges, -15 and +3.7 µC, are fixed in place and separated by 2.8 m. (a) At what spot along a line through the charges is the net electric field zero? Locate this spot relative to the positive charge. (Hint: The spot does not necessarily lie b..
A block of weight 36.1 N is hanging from a rope. The tension in the rope is 48.5 N, pulling upward on the block. What is the magnitude and direction of the acceleration of the block?
A person pushes a 13.0 kg lawn mower at constant speed with a force of 74.0 N directed along the handle, which is at an angle of ? = 40.0° to the horizontal (Fig. 4-40).b.Calculate the horizontal retarding force on the mower
A particle travels 19 times around a 10-cm radius circle in 36 seconds. What is the average speed (in m/s) of the particle
Calculate the change in potential energy of a 86.4 kg man when he takes an elevator from the first floor to 35th floor, if the distance between floors is 4.11 m
Steam at 100°C is added to ice at 0°C. Find the amount of ice melted and the final temperature when the mass of steam is 14 g and the mass of ice is 51 g. g °C
A town is installing a new 10” main to carry drinking water. The only section remaining to be installed is a segment through the middle of town. Calculate the length of pipe required for the pipe system.
A 64-kg skier is going down a slope oriented 36° above the horizontal. Determine the pressure that each ski exerts on the snow
In exercising, a weight lifter loses 0.143 kg of water through evaporation, the heat required to evaporate the water coming from the weight lifter's body. Determine the minimum number of nutritional Calories of food
What is the magnitude
Green light (λ = 546 nm) strikes a single slit at normal incidence. What width slit will generate a central maximum that is 3.00 cm wide on a screen 1.76 m from the slit.
Starting from rest, a 98 kg firefighter slides down a fire pole. The average frictional force exerted on him by the pole has a magnitude of 800N, and his speed at the bottom of the pole is 3.2 m/s. How far did he slide down the pole.
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