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At the Indianapolis 500, you can measure the speed of cars just by listening to the difference in pitch of the engine noise between receding and approaching cars. Assume the sound of a certain car drops by a factor of 1.40 as it goes by on the straightaway. Evaluate how fast is it going? (Take the speed of sound to be 343 m/s.)
----------km/h
What total impulse was imparted by these forces. Near Earth, the density of protons in the solar wind (a stream of particles from the Sun) is 12.0 cm-3, and their speed is 702 km/s. Find the current density of these protons.
The answer to the b) part of this problem is "the kineticenergy is too large to expect that the electron could be confinedto a region the size of the nucleus".
Consider a transverse wave were represented by function y= 2.3 sin(1.9x-25t), where y,x, and t are in units of m,m, and seconds respectively. Determine the wavelength in meters.
a block of mass 0.222 kg is placed on the end of a spring which has a stiffness of 150. nm. it is pulled down 2.60 cm
Three 1.5-V batteries, with internal resistances of 0.01ohms , 0.1ohms , and 1ohms , what is the voltage across each resistor
A jetliner is moving at a speed of 189 m/s. The vertical component of the plane's velocity is 37.6 m/s. Determine the magnitude of the horizontal component of the plane's velocity.
Assume all temperatures to be exact. Ice (initially at 0 ) is added to 0.50L of tea at 18C to make the coldest possible iced tea. If enough ice is added so the final mixture is all liquid, how much liquid is in the pitcher when this condition occurs?
An object attached to a spring has simple harmonic motion with amplitude of 3.00 cm. When the object is 1.73 cm from the equilibrium position, what fraction of its total energy is potential energy?
While on a camping trip, you would like to carry water from the lake to your campsite. find Which bucket holds more water
when a 50-gram piece of aluminum at 100 degrees celsius is placed in water it loses 735 calories of heat while cooling
An object is located to the left of a convex lens whose focal length = +40cm. The magnification produced by the lens = 3.0 m. Calculate the distance through which the object must be moved
A circular wire loop of radius is 16.0 cm carries a current of 2.80 A. What is the magnitude of the torque acting on the loop
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