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Assume all temperatures to be exact, and neglect significant figures for small changes in dimension. On a warm day (88 F), an air-filled balloon occupies a volume of 0.300m^3 and has a pressure of 22.0 lb/in^2 . If the balloon is cooled to 32 in a refrigerator while its pressure is reduced to 14.7 , what is the volume of the air in the container? (Assume that the air behaves as an ideal gas.) answer in m3
An automobile club plans to race a 710 kg car at the local racetrack. The car needs to be able to travel around several 160 m radius curves at 93 km/h. What must the banking angle of the curves be so that the force of the pavement on the tires of ..
An object starting from rest accelerates at 3.00 m/s2for 10.0 s. The object then continues at a constant velocity for 5.00 s. find the objects displacement from the original starting point
Human skin is most sensitive to ultraviolet light of approximate wavelength 300 nm. The threshold for sunburn occurs when 1 cm2 of skin absorbs about 1015 of these UV photons over an interval of several hours or less. How much energy is absorbed
An automobile of mass 1500 kg and a truck of 3500 kg collide at an intersection. What is the velocity (magnitude and direction) of the vehicles immediately after collision
A hydrogen atom in the ground state absorbs a 13.06eV photon. find the wavelength of the photon emitted in this quantum jump
What is the wavelength of the waves on the string?
The star Mizar in Ursa Major is a binary system of stars of nearly equal magnitudes. What is the minimum diameter of the pupil
A skateboarder, starting from rest, rolls down a 12.5 m ramp. When she arrives at the bottom of the ramp her speed is 6.10 m/s. (a) Determine the magnitude of her acceleration, assumed to be constant. .m/s2 (b) If the ramp is inclined at 26.5° wit..
A roller-coaster car moves 198 ft horizontally and then rises 143 ft at an angle of 30° above the horizontal. It then travels 143 ft at an angle of 40° downward
Lead has a latent heat of fusion of 2.32x10^4 J/kg, a specific heat of 128 J/(kg K), and a melting point of 228°C. determine velocity needed to achieve melting the bullet
Define the carrier power, total power and sideband power in the AM signal.
A 75.0 kg mass sits on an inclined plane, and a rope passing over a pulley at the top connects it to a hanging 125 kg mass. The pulley is frictionless and its mass is negligible. The coefficient of friction between the 75.0 kg block and the plane ..
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