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As a certain sound wave travels through the air, it produces pressure variations (above and below atmospheric pressure) given by ?P = 1.31 sin(?x - 332?t) in SI units. (Note: Use the following values as needed, unless otherwise specified. The equilibrium density of air is ? = 1.20 kg/m3. Pressure variations ?P are measured relative to atmospheric pressure, 1.013 105 Pa.) (a) Find the amplitude of the pressure variations. (b) Find the frequency of the sound wave. (c) Find the wavelength in air of the sound wave. (d) Find the speed of the sound wave.
A 950kg car is at the top of a 40m -long, 2.5 degree incline. What the first car's speed would have been at the bottom had it not struck the second car
a child rolls a 0.685kg basketball up a long ramp. the basketball can be considered a thin walled hollow sphere. find the maximum vertical height increase of the ball
A closely wound coil has a radius of 6.30 cm and carries a current of 1.70 A. How many turns must it have if, at a point on the coil axis 6.30 cm from the center of the coil
Suppose the speed of light in a vacuum were only 25.5 mi/h. Find the length of the bicycle being ridden at a speed of 20.0 mi/h as measured by an observer sitting on the park bench, given that its proper length is 1.59 m.
In a heat conductivity experiment, a slab of silicon of thickness 2 x 10^-3m and area of 0.40m^2 seperates condensing steam(lv=540cal/g) at 100 degree C, Find the increase of entropy in the universe during one minute of this experiment
a solid wood door 90 cm wide by 2.00 m tall has a mass of 35.0 kg. it is ajar and at rest. a ball with a mass of 500 g is thrown perpendicular to the door with a speed of 20.0 m/s, how much energy is lost in the process
A block of mass 1 kg is on a turntable 0.5 m from the center of the turntable. Find the angular speed of the turntable as a function of time
Take element Z = 21 from the periodic table. Ionize it 20 times so that there is only one electron left orbiting around the nucleus. What is the ground state energy of the electron
A fireman tosses his 0.85-kg hat onto a peg, where it oscillates as a physical pendulum, find the moment of inertia of the hat about the pivot point
Calculate the velocity of the object for an elapsed time.
Analyse average density of the white dwarf
A 160 lb person has a mass of 160/32 = 5 slugs. A 160 lb person steps into an elevator and stands on a bathroom scale. Determine the scale reading for the given scenarios
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