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A hydrogen balloon at Earth's surface has a volume of 6.78 m3 on a day when the temperature is 26.5°C and the pressure is 1.00 x 105 N/m2. The balloon rises and expands as the pressure drops. What would the volume of the same number of moles of hydrogen be at an altitude of 35.4 km where the pressure is 0.313 x 103 N/m2 and the temperature is -12.2°C?
A coal fired plant generates 600 MW (5.18 x 10^13 J/day) of electric power. The plant burns 4.8 x 10^6 kg of coal each day. what is the ideal efficiency of this plant
An aluminum plate has a length of 0.12 m and a width of 0.10 m at 25 °C. what is the change in the area of the plate as a result of the increase in temperature
A 954 kg drag race car accelerates from rest to 113 km/h in 0.919 s. What change in momentum does the force produce
what are the magnitude and direction of its acceleration. A potential difference of 80 mV exists between the inner and outer surfaces of the cell membrane. The inner surface is negative relative to the outer surface. How much work is required to ej..
The Big Bang Theory suggests leftover background radiation. Find the wavelength of this radiation
A Ferris wheel with a radius of 7.7 m rotates at a constant rate, completing one revolution every 37 s, Find the direction and magnitude of a passenger's acceleration when at the bottom of the Ferris wheel
what horizontal force is required to move the crate. If the coefficient of kinetic friction between a 33 kg crate and the floor is 0.26, what horizontal force is required to move the crate at a steady speed across the floor? Which is 84 I just help..
A container holds 1.9 mol of gas. The total average kinetic energy of the gas molecules in the container is equal to the kinetic energy of a 7.7x10-3 kg bullet with a speed of 630 m/s
Water flows at 0.990 m/s from a hot water heater, through a 450-kPa pressure regulator. What's the flow speed in this pipe
An ice skater is gliding horizontally across the ice with an initial velocity of +7.77 m/s. How much time elapses before her velocity is reduced to +3.00 m/s
A 0.24 meter stick balances at its center. If a necklace is suspended from one end of the stick, the balance point moves 8 toward that end. Is the mass of necklace more than, less than, or the same as that of the meter stick.
q1. charge of uniform density 80 ncm3 is distributed throughout a hollow cylinder region formed by two coaxial
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