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In a city with heavy traffic, assume the air contains 5.78 X 10^-6 L of carbon monoxide per litre. Calculate the daily intake of carbon monoxide in litres by the person.
Estimate the force a person must exert on a string attached to a 0.130 kg ball to make the ball revolve in a horizontal circle of radious 0.600 m. The ball makes 1.60 revolutions per second.
Because the production of this mixture yielded an indeterminate value for the amount of silver, another sample of the compound weighing 8.12 g was reacted with a solution of NaCl, yielding 5.57 g of
The density of liquid oxygen at its boiling point is 1.14kg/L , and its heat of vaporization is 213kJ/kg. How much energy in joules would be absorbed by 4.0 L of liquid oxygen as it vaporized?
calculate the mass of nitrogen dissolved at room temperature in an 89.0 L home aquarium. assume a total pressure of 1.0 atm and a mole fraction for nitrogen of 0.78.
Find the wavelength of the ultrasonic wave emitted by a bat it has a frequency of 4.0 * 10^4 Hz?
You have a 100.0- mL graduated cylinder containing 50.0 mL of water. you drop a 115-g piece of brass into the water. to what height does the water rise in the graduated cylinder.
A 280 kg piano slides 4.5 m down a 30° incline and is kept from accelerating by a man who is pushing back on it parallel to the incline (Fig. 6-36). The effective coefficient of kinetic f
Treat the coffee as though it were pure water and neglect energy exchanges with the environment. The specific heat of water is 4186 J/kg·K. The latent heat of fusion is 333 kJ/kg. The density
Consider the fundamental units of each term in the equation. What physical quantity is represented on each side of the equation?
A 95g arrow is fired from a bow whose string exerts an average force of 125 on the arrow over a distance of 83cm. What is the speed of the arrow as it leaves the bow?
You're on a rooftop and you throw one ball downward to the ground below and another upward. The second ball, after rising, falls and also strikes the ground below. If air resistance can be neglecte
The force exerted by the wind on the sails of a sailboat is 370 N north. The water exerts a force of 250 N east. If the boat (including its crew) has a mass of 250 kg, what are the magnitude and di
The loaded cab of an elevator has a mass of 2.7 x 103 kg and moves 198 m up the shaft in 27 s at constant speed. At what average rate does the force from the cable do work on the cab?
The tire is filled with dry air at sea level and a temperature of 60 degree F to 32 lb/square inch.standard sea level pressure is 101325 Pa at 0 degree C (STP). What is the mass of the air contained
A charge of 4.0 x 10^-6 C is placed on a small conducting sphere that is located at the end of a thin insulating rod whose length is 0.20 m. The rod rotates with an angular speed of 150 radians/seco
A force of 5 pounds is required to hold a spring stretched 0.6 feet beyond its natural length. How much work is done in stretching the spring from its natural length to 1.1 feet beyond its natural l
An elevator has a mass of 1100 kg. Suppose it accelerates upward at .45 m/s2. What is the force acting on the elevators support cable?
One end of an iron poker is placed in a fire where the temperature is 500°C, and the other end is kept at a temperature of 26°C. The poker is 1.2 m long and has a radius of 5.0 10-3 m. Ignor
A solid sphere (I = 0.4MR2) of radius 0.06 m and mass 0.50 kg rolls without slipping 14m down a 30º inclined plane. At the bottom of the plane, the linear velocity of the center of mass of the
A(n) 74.6 g ball is dropped from a height of 69.6 cm above a spring of negligible mass. The ball compresses the spring to a maximum displacement of 4.91619 cm. The acceleration of gravity is 9.8 m/s
The mass of ethanol needed to fill the tube is found to be 9.64g. Calculate the inner diameter of the tube in centimeters. The density of ethanol is 0.789 g/mL.
A 230 kg crate is pushed horizontally with a force of 740 N. If the coefficient of friction is 0.20, calculate the acceleration of the crate.