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Question1
The starter motor of a car engine draws a current of 126 A from the battery. The copper wire to the motor is 6 mm in diameter and 1.18 m long. The starter motor runs for 0.64 s until the car engine starts. How much charge passes during the starter motor?
Question2
Joey has a ring weighing 20 grams made of an alloy of 20 silver and the rest gold. He decides to melt down rings and include enough silver to reduce the gold content to 74. How many grams of silver must he include?
A 27 pound meteorite struck the car, leaving a dent 24 cm deep in the trunk. If the meteorite struck the car with a speed of 440 m/s, what was the magnitude of its deceleration, assuming it to be constant.
If the same number of 9.00 ?F capacitors are connected in series with the same 4.00 V battery, how much charge will end up on each capacitor plate
A wave on a string is described by D(x,t)=(2.00cm)sin[(12.57rad/m)x?(638rad/s)t],where x is in m and t is in s. The linear density of the string is 5.00g/m, What is the maximum speed of a point on the string
A sign weighing 400N is suspended at the end of a 350N uniform rod that is hinged at the wall. What is the tention T in support cable
A 900 kg car travelling east at 15 m/s collides with 750 kg travelling north at 20 m/s. what is the speed of the wreckage
After a plant or animal dies, its 14C content decreases with a half-life of 5730 years. what is the age of the ancient site
A neon sign requires a 13 kV rms voltage. This is to be obtained from a 220 V rms power supply using a single transformer. Find the required turns ratio for the transformer
A 2.0 cm tall object is placed in front of a mirror. A 1.0 cm tall upright image is formed behind the mirror, 150 cm from the object. find Is the image erect or inverted
A monatomic ideal gas ( = 1.67) is contained within a box whose volume and pressure are 3.1 m3, Find the speed of sound in the gas
Light of wavelength 5.60 multiply.gif 102 nm passes through a slit of width 0.180 mm. Determine the width of the first-order bright fringe
A space vehicle is traveling at 3760 km/h relative to Earth when the exhausted rocket motor is disengaged, What is the speed (in km/h) of the command module relative to Earth just after the separation
A 10.0-kg object experiences a drag force due to air resistance. At what velocity (magnitude and direction) is the net force on the object twice its weight
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