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Question1
One of the ways that a forensic scientist can figure out the make and model of a car from a "hit and run" collision is if they be able to pick up a piece of plastic from the headlight of the car. The plastics in a car tend to be different for different makes and models of cars and thus have different index of refractions that you can find in a table. If you were given a flat piece of plastic from a hit and run, write down a procedure to figure out what type of car was involved in the hit and run.
Question2
Two people are talking at a distance of 2.49 m from where you are and you measure the sound intensity as 1.47×10^-7 W/m2. Another student is 4.79 m away from the talkers. What sound intensity does the other student measure?
A wire of length l0 and cross-sectional area A supports a hanging weight W. Show that if the wire obeys Eq (11.7), it behaves like a spring of force constant AY/l0, where Y is the Young's modulus of the wire.
A catcher catches a fastball going 95mi/hr and recoils 12cm while stopping the ball in 0.005s. FIND the average force the ball exerts on the hand & glove
Physics: Standing Waves, Second Harmonic, Two pieces of steel wire with identical cross-sections have lengths of L and 2L. Each of the wires is fixed at both ends and stretched so that the tension in the longer wire is three times greater than tha..
What are the next two harmonic frequencies above the fundamental frequency that would create resonance in the same tube. What length tubes (also closed at one end) would have as their fundamental frequencies.
Your car's fan belt turns a pulley at 3.15rev/s . When you step on the gas for 1.55s , find Through what angle did the pulley turn while accelerating
How much work is done on the car by the engine when accelerating the car from rest to 90m/s, What is the average power delivered by the engine
A water-skier, moving at a speed of 9.15 m/s, is being pulled by a tow rope that makes an angle of 37.0° regarding the velocity of the boat (see the Illustrating). The tow rope is parallel to the water. The skier is moving in the similar direction..
A 380-kg sailboat has an acceleration of 0.636 m/s2 at an angle of 65.5 ° north of east. Find the direction of the net force that acts on the sailboat
A tank having a volume of 0.100 m3 contains helium gas at 135 atm. How many balloons can the tank blow up
Estimate the average force exerted by a shot-putter on a 7.0 kg shot if the shot is moved through a distance of 2.8 m and is released with a speed of 13 m/s
A step down transformer produces a voltage of 5.3 V across the secondary coil when the voltage across the primary coil is 100V. What voltage appears across the primary coil
The drawing shows the front and rear sprockets of a bicycle. Assume the chain does not slip or stretch. How much time is required to double the speed of the rear sprocket
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