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1. Many stoplights now have a sensing system based on inductance to determine if a car is waiting at a red light. If that is the case, the light is then switched to green how does the system work.
2. What particles are being accelerated in a particle accelerator and how are they being accelerated, what their target is, how the particles are detected and what sub-atomic particles have been discovered at the site.
Find the true value of the function at x = 1. What is the error? (Give decimal answers.) Illustrate with a graph.
A long straight wire has fixed negative charge with a linear chargedensity of magnitude 4.0 nC/m. The wire isto be enclosed by a coaxial, thin-walled, nonconducting cylindricalshell of radius 1.6 cm.
What value should m have so the masses won't accelerate? Now take μk = 0.15 on all surfaces and m = 1.1 kg . What will be the acceleration of both masses? Show the force diagram for each.
A small block of mass 20.0 grams is moving to the right on a horizontal frictionless surface with a speed of 0.68 m/s. What is the speed of the 40.0 gram block after the collision
Draw a ray diagram for the rays from the top of your head and from your toes to your eyes. Draw a virtual image of your body. How tall is the image? How far is it from the mirror?
An RC circuit in an electronic timer is arranged therefore that a switch is activated when the potential difference across the capacitor falls to 50% of its initial value. The capacitance is 0.15 F.
Two particles having charges of 0.580 nC and 14.5 nC are separated by a distance of 2 meter. Find where would the net electric field be zero if one of the charges were negative
A man walks 3 miles east in 1 hour at a constant velocity, then walks two miles east at a constant velocity in 20 minutes, then two miles east at a constant velocity in 40 minutes, then rests for one hour and then turns around and walks eight miles w..
A Spring of negligible mass has force constant K= 1700 N/m. How far must the spring be compressed
Two converging lenses with focal lengths of f1 = 2.00 cm and f2 = 5.00 cm are situated 14.0 cm apart on a long optics bench. determine Is the final image real or virtual
A sign weighing 498 N is suspended at the end of a uniform rod 4.04 m long weighing 663 N as shown below. What is the tension in the support cable
In the first stage of a two-stage Carnot engine, energy is absorbed as heat Q1 at temperature T1 = 530 K, What is the efficiency of the engine
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