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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.
Describe how the average velocity can be found on a graph of x versus t.
If the ambulance is stationary and you (the "observer") are sitting in a parked car, what are the wavelength and the frequency of the sound you hear?
Assume that the volume of the empty spaces between the candes is negligible. If the height of the candes in the container increases at the rate of 0.270 cm/s, at what rate (kilograms per minute) doe
A 7.0-m-diameter garden pond holds 6.4 × 103 kg of water. Solar energy is incident on the pond at an average rate of 400 W/m2. If the water absorbs all the solar energy and does not exchange
A 47.5-g Super Ball traveling at 25.5 m/s bounces off a brick wall and rebounds at 21.0 m/s. A high-speed camera records this event. If the ball is in contact with the wall for 3.70 ms, what is the
In a region where there is an electric field, the electric forces do +7.85x 10-19 J of work on an electron as it moves from point X to point Y. Which point, X or Y, is at a higher potential? What i
Question: 40 g of copper pellets are removed from a 460°C oven and immediately dropped into 100 mL of water at 18°C in an insulated cup. What will the new water temperature be?
Place the metals in order of least to greatest weight for a 10cm long structural part which must be able to support a load of 50kN without plastically deforming. Ti, Al, steel, braas Al, Ti, brass,
A 11.2 cm-diameter circular loop of wire is placed with its face parallel to the uniform magnetic field between the pole pieces of a large magnet. When 6.56 A flows in the loop, it experiences a to
From what height would you have to drop the tool on Earth so that the fall-time on both planets would be the same? Neglect air resistance on both Mars and the Earth.