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A rigid, closed, insulated container with a volume of 45 ft^3 is filled with carbon dioxide at a pressure of 14.7 psia and a temperature of 90 degrees F. A 100-W electric-resistance heater inside the tank is energized for 10 minutes.
Calculate the mass of CO2 in the tank and the temperature and pressure in the tank at the end of the 10 minutes period
A projectile is launched with an initial speed of 50 m/s at an angle of 35° above the horizontal, What is the projectile's velocity at the highest point of its trajectory
A snake is sunning itself on a rock. If the snake is 0.4 m long, what is the approximate amount of radiation it absorbs from the Sun in 15 min, Estimate the temperature in the Sun on the rock
A glass sheet is covered by a very thin opaque coating. In the middle of this sheet there is a thin scratch 1.25×10-3mm thick. The sheet is totally immersed beneath the surface of a liquid.
It takes 1.4×106J of heat to bring a quantity of water from 14 ? C to a boil. What is the mass of the Water
Consider two isolated, charged conducting spheres: a large sphere and a second smaller sphere with a radius 8 times smaller than that of the large sphere, but with 4 times as much charge.
Radio astronomers detect electromagnetic radiation at 40.0MHz from an interstellar gas cloud. What is the magnetic field strength inside the gas cloud
A 256Hz sound wave in 20°C air propagates into the water of a swimming pool. What are the water-to-air ratios of the wave’s frequency, wave speed and wavelength?
An electron ( mass = 9.11×10?31 ) leaves one end of a TV picture tube with zero initial speed and travels in a straight line to the accelerating grid, which is 1.79 away. It reaches the grid with a speed of 2.96×106 . (You can ignore the gravitati..
A uniform beam of length L = 7.80 m and weight 3.95 102 N is carried by two workers, Determine the force that each person exerts on the beam
Hearing damage may occur when a person is exposed to a sound intensity level of 90.0 dB for a period of 9.00 hours, How much sound energy is incident on the eardrum during this time
A long string is moved up and down with simple harmonic motion with a frequency of 46 Hz. The string is 579 m long and has a total mass of 46.3 kg. Determine the velocity of the wave on the string
What is the focal length of a meniscus lens that has a convex surface of radius 32 cm and a concave surface of radius -16 cm
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