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An ideal gas occupies a volume of 2.8-cm3 at 20°C and atmospheric pressure. Determine the number of molecules of gas in the container.
On a hot summer day in the state of Washington while kayaking, I saw several swimmers jump from a railroad bridge into the Snohomish River below. The swimmers stepped off the bridge, and they hit t
Two cars are traveling along a straight line in the same direction, the lead car at 24.0m/s and the other car at 29.3m/s. At the moment the cars are 38.3m apart, the lead driver applies the brakes,
One swimmer in a relay race has a 0.485 s lead and is swimming at a constant speed of 3.84 m/s. He has 48.5 m to swim before reaching the end of the pool. A second swimmer moves in the same directio
A sealed cubical container 27.0 cm on a side contains three times Avogadro's number of molecules at a temperature of 23.0°C. Find the force exerted by the gas on one of the walls of the contain
The New River Gorge bridge in West Virginia is a 518 m long steel arch. How much will its length change between temperature extremes -15°C and 40°C?
You are driving through town at 13.5 m/s when suddenly a ball rolls out in front of you. You apply the brakes and begin decelerating at 3.31 m/s2. How far do you travel before stopping?
Two charges q1 = 4 µC, q2 = -23 µC, are L = 19 cm apart. A third charge is to be placed on the line between the two charges. How far from q1 should the third charge be placed so that th
An air bubble has a volume of 1.35 cm3 when it is released by a submarine 105 m below the surface of a lake. What is the volume of the bubble when it reaches the surface? Assume the temperature and
If the gas is heated so that both the pressure and volume are doubled, what is the final temperature? answer should be in : C°
The New River Gorge bridge in West Virginia is a 518 m long steel arch. How much will its length change between temperature extremes -22°C and 36°C? answer should be in cm.
Four solid plastic cylinders all have radius 2.51 cm and length 6.48 cm. Find the charge of each cylinder given the following additional information about each one.
A molecule of DNA (deoxyribonucleic acid) is 2.23 µm long. The ends of the molecule become singly ionized: negative on one end, positive on the other. The helical molecule acts like a spring
In Millikan's experiment, an oil drop of radius 2.104 µm and density 0.804 g/cm3 is suspended in chamber C when a downward-pointing electric field of 1.92 105 N/C is applied. Find the charge on
In reaching her destination, a backpacker walks with an average velocity of 1.30 m/s, due west. This average velocity results because she hikes for 6.44 km with an average velocity of 2.58 m/s, due
A lawnmower engine with an efficiency of 0.25 rejects 9825J of heat every second. What is the magnitude of the work that the engine does in one second?
In a diesel engine, the piston compresses air at310K to a volume that is0.0629of the original volume and a pressure that is 48.7 times the original pressure. What is the temperature of the air afte
Initially, the air pressure is 1.02105 Pa, but after the oven has warmed up to a final temperature of 463K, the atmospheric air pressure has decreased to 8.64104 Pa due to a change in weather condit
A simple pendulum is swinging back and forth through a small angle, its motion repeating every1.43s. How much longer should the pendulum be made in order to increase its period by0.38s?
Each of the identical springs attached to the front axle supports333kg. A person pushes down on the middle of the front end of the car and notices that it vibrates through height cycles in 3.3s. Fin
Number Unit F = N (g) Determine the magnitude F of the net force on charge 2 in drawing
What is the algebraic expression for the magnitude a of the acceleration that a charge experiences when placed in an electric field?
A moving particle encounters an external electric field that decreases its kinetic energy from 9910 eV to 6840 eV as the particle moves from position A to position B. The electric potential at A is
The magnitude of the charges is |q|=8.2 oC, and the distance between them is d=6.4 mm. Determine the magnitude of the net force on charge 2 for each of the three drawings.
Water has a mass per mole of 18.0 g/mol, and each water molecule (H2O) has 10 electrons. (a) How many electrons are there in 2.61 liters of water? (1 liter is equivalent to 1.00 × 10-3 m3) (b