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suppose you made a 4.7kilaohm resistor from a carbon resistor and a Nichrome wire-would resistor connected together so the total resistance is the sum of their separate resistances. What value should each of these resistors have (at 0 degrees Celsius) so that the combination is temperature independent.
A point source emits 26.0 W of sound isotropically. A small microphone of effective cross-sectional area 0.350 cm2 is located 175 m from the source. estimate the power intercepted by the microphone
A space traveler moving at a speed of 0.59c with respect to the earth makes a trip to a distant star that is stationary relative to the earth. He measures the length of this trip to be 8.5 light-years. What would be the length of this same trip (in l..
The temperatures indoors and outdoors are 299 and 312 K, respectively. How much heat is removed from the house
A battery having an emf of 11.10 V delivers 111 mA when connected to a 73.0 load. Determine the internal resistance of the battery
An opera singer in a convertible sings a note at 600 whereas cruising down the highway at 81. What is the frequency heard by a person standing beside the road in front of car? What is the frequency heard by the person standing beside the road behi..
An ice cube sliding along the ground at 3 m/s goes off a ramp pointed straight up. What is the speed of the ice cube when it comes down, just before it hits the ground
A large cruise ship of mass 6.80 107 kg has a speed of 12.8 m/s at some instant. what is the ship's kinetic energy at this time
Your team of test engineers is to release the parking brake so an 848.0-kg car will roll down a very long 6.1 percent grade in preparation for a crash test at the bottom of the incline. What is the terminal speed for the car rolling down this grade
A uniform electric field exists in the region between two oppositely charged parallel plates 1.67cm apart, Find the speed of the proton at the moment it strikes the negatively charged plate
If the force on the ball increases linearly for 4.00 ms, holds constant for 20.0 ms, and then decreases linearly to zero in another 4.00 ms, what is the maximum force on the ball
On a distant planet, golf is just as popular as it is on earth. A golfer tees off and drives the ball 2.60 times as far as he would have on earth, given the same initial velocities on both planets. The ball is launched at a speed of 43.0 m/s at an an..
A 6 kg box is being pulled by a force F = 95 N at an angle of 54° from the horizontal. calculate the Work done by the external force
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