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At what temperature is the speed of sound in helium (ideal gas, = 1.67, atomic mass = 4.003 u) the same as its speed in oxygen gas at 4.78 oC? The speed of sound in oxygen at 4.78°C is 317 m/s.
A pipe open only at one end has a fundamental frequency of 282Hz. A second pipe, initially identical to first pipe, is shortened by cutting off a portion of the open end.
A cylinder of mass 8.0 kg rolls without slipping on a horizontal surface. At a certain instant its center of mass has a speed of 11.0 m/s. Determine the translational kinetic energy of its center of mass
To celebrate a victory, a pitcher throws her glove straight upward with an initial speed of 6.5 m/s a) How long does it take for the glove to return to the pitcher? b) How long does it take for the glove to reach its maximum height?
How various revolutions per minute would a 21 -diameter Ferris wheel need to make for the passengers to feel "weightless" at the topmost point.
The combined mass of the professor and the chair is 90-kg. He is pushed 2.60-m along the incline by a group of students who together exert a constant horizontal force of 600-N. The professor speed at the bottom of the ramp is 1.75m/s. use the work..
Two bowling balls, each of mass 5kg, are located so that their centers of mass are 0.5m apart. What is the size of the force of universal gravitation
A severe thunderstorm dumped 2.5 in of rain in 30 min on a town of area 33km2. What mass of water (in kg) fell on town? One cubic meter of water has a mass of 103kg.
A man's gold wedding ring has an inner diameter of 2.2cm at 30?C. what will be the change in the inner diameter of the ring
One cubic meter (1.00 m3) of aluminum has a mass of 2.70 103 kg, and the same volume of iron has a mass of 7.86 103 kg. Find the radius of a solid aluminum sphere
A small block of mass m1 = 0.5kg slides to the left, with a velocity of v1 = -8.40 m/s, towards a curved wedge of mass m2 = 3 kg which sits on an icy, frictionless lake surface.
A pond with a flat bottom has a surface area of 730 m2 and a depth of 2.7 m. Find the rate at which energy is transferred by conduction from the surface to the bottom of the pond
A spherical weather balloon is filled with hydrogen until its radius is 3.40 m, Find the buoyant force acting on the balloon, assuming the density of air is 1.29 kg/m3.
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