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A constant opposing pressure of 0.159 atm until it has a volume of 1.000 L at 200 K and the pressure equals the opposing pressure. What is the work for the system?
A 4.00 11.0 swimming pool slopes linearly from a 1.20 depth at one end to a 3.80 depth at the other. What is the mass of water in the pool?
A solution of ethanol (C2H5OH) in water is prepared by dissolving 80.6 mL of ethanol (density = 0.79 g/cm3) in enough water to make 250.0 mL of solution. What is the molarity of the ethanol in this
A 29.0 kg child on a 3.00 m long swing is released from rest when the ropes of the swing make an angle of 32.0° with the vertical. (a) Neglecting friction, find the child's speed at the lowest p
A speed skater moving across frictionless ice at 8.1 m/s hits a 5.7 m wide patch of rough ice. She slows steadily, then continues on at 5.8 m/s. What is her acceleration on the rough ice?
Draw a cartoon of how three water molecules might be arranged in space, given this electrostatic interaction.
Halley's Comet orbits the sun about every 75 years due to the gravitational force the sun provides. Compare the gravitational force between Halley's Comet and the sun when the comet is at aphelion (
A 12.8 g bullet is fired horizontally into a 102 g wooden block initially at rest on a horizontal surface. After impact, the block slides 7.5 m before coming to rest. If the coefficient of kinetic
A mixture of propane and butane is burned with pure oxygen. The combustion products contain 47.4 mole% H2O. What is the mole percent of propane in the fuel?
48.0g piece of metal is dropped into 50.0mL of water in a graduated cylinder. The water level rises to 62.4mL. What is the density of the metal?
An object of length 3.00 cm is inside a plastic block with index of refraction 1.40. If the object is viewed through the top surface of the block at a non-zero angle from the normal, where is the o
Coils rotating in a magnetic field are often used to measure unknown magnetic fields. As an example, consider a coil of diameter 2.00 cm with 72.0 turns that is rotated about an axis perpendicular t
A motorist traveling at 13 m/s encounters a deer in the road 47 m ahead. If the maximum acceleration the vehicle's brakes are capable of is -6 m/s2, what is the maximum reaction time of the motorist
A 1.000 g sample of a compound containing C, H and O is burned in excess oxygen, producing 1.783 g CO2 and 0.734 g H2O. Determine the empirical formula of the compound.
A car is traveling 23 m/s when the driver sees a child standing in the road. He takes 0.8 s to react, then steps on the brakes and slows at 6.0 m/s2. How far does the car go before it stops?
A projectile is launched from a cannon at ground level at an angle of 62.0 degrees elevation and has a muzzle velocity of 481 m/s. How many seconds after it is fired does it reach max height?
Throughout the problem, use = 8.85×10-12 .The dielectric plate is now slowly pulled out of the capacitor, which remains connected to the battery. Find the energy of the capacitor at the moment
If the aluminum block is initially at 25 C, what is the final temperature of the block after the evaporation of the alcohol?
A small motor runs a lift that raises a load of bricks weighing 670 N to a height of 14 m in 25 s. Assuming that the bricks are lifted with constant speed, what is the minimum power the motor must p
Assuming the dimensions of a room are 18 ft 3 12 ft 3 8 ft, estimate the mass of carbon monoxide in the room that would register 100 ppm on a carbon monoxide .
Solar energy is incident on the pond at an average rate of 400 . If the water absorbs all the solar energy and does not exchange energy with its surroundings, how many hours will it take to warm fro
Mesitylene is a liquid hydrocarbon. a given sample is burned completely and it produces 17.0 g of CO2 and 4.64 g of H2O. determine the empirical formula for the compound.
The cliff is 25.0 m above the ocean. Find the car's position horizontal relative to the cliff when the car lands in the ocean, and the length of time the car is in the air.
Provide a rational argument that explains why the yield would increase when the amount of only one of the reactants is increased.
solution of an unknown substance in water at 300 K gives rise to an osmotic pressure of 2.25atm . what is the molality of the solution?