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You can estimate the distance to a lightning flash by counting the seconds that elapse between the time you see the flash and when you hear the accompanying thunder.
(a) The approximate distance in miles is obtained by dividing the time in seconds by 5. Explain why this is so.
(b) Estimate the distance to a lightning flash that you see 10 s before you hear thunder.
A 210, 50-cm-diameter turntable rotates on frictionless bearings at 67. A 25 block sits at the center of the turntable. A compressed spring shoots the block thoroughly outward next to a frictionless groove in the surface of turntable.
An n-type semiconductor has a donor concentration of 1*10^13 cm^-3. If the equilibrium electron concentration is 1.2*10^13 cm^-3
A flat sheet of ice (n = 1.309) has a thickness of 1.8cm. It is on top of a flat sheet of crystalline quartz (n= 1.544) that has a thickness of 0.94 cm. Light strikes the ice vertically and travels through it and then during the quartz. In the time i..
The left ventricle of the heart accelerates blood from rest to a velocity of + 29.5 cm/s. How much time does blood take to reach its final velocity
Determine the voltage required on the input of the amplifier to give the maximum output of 85 dBμV
Although the evidence is weak, there has been concern in recent years over possible health effects from the magnetic fields generated by transmission lines. Estimate the magnetic field strength on the ground
The tires of a car make 65 revolutions asthe car reduces its speed uniformly from 110 km/h to 60 km/h. If the car continues to decelerate at this rate, how much more time is required for it to stop
An object is located 100 centimeter in front of a diverging lens of focal length -25 centimeter. Determine where is the final image formed
a severe thunderstorm dumped 2.5 in of rain in 30 min on a town of area 34 km2. what mass of water in kg fell on the
Explain the changes in the velocity, acceleration, and net force of a man with a parachute jumping off a plane. You need to describe the changes with valid scientific principles.
Find out the wavelengths of the light.
An open-open organ pipe is 67.9 cm long. AN open-closed pipe has an essential frequency equal to the third harmonic of the open-open pipe. How long is the open-closed pipe.
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