In a transistor, collector current is controlled by

Base

Collector

Emitter

What is one example of the use of an infrared sensor? bar code scanner tracks store inventory monitoring feed for farm animals to keep them healthy detecting the presence of humans trapped under collapsed buildings information is relayed to a

Why are metals are good conductors of heat?

Occupants in a single space shuttle in orbit feel weightless. describe a scheme whereby occupants in a pair of shuttles (or even one shuttle and another massive object in orbit) would be able to use a long cable to continuously experience a

Determine the kinetic energy of a 1000kg roller coaster car that is moving with a speed of 20.0m/s

What is the speed of an eagle that travels 200 meters in 4 seconds?

Jill is getting ready to push little Frank in his swing. She pulls Frank back as high as she can and then releases the swing. What is the initial transfer of energy that accelerates the swing when she lets go?

Which phenomenon generates electric current? A black body radiation B ultraviolet catastrophe C emission spectra D photoelectric effect

What is the product of 3.15 m and 2.006 m with the correct number of significant figures?

Consider what happens at the moment when the block leaves the surface of the globe. Which of the following statements are correct? - The net acceleration of the block is directed straight down.

A mechanic pushes a 3.00 ✕ 103-kg car from rest to a speed of v, doing 4,680 j of work in the process. during this time, the car moves 26.0 m. neglecting friction between car and road, find v and the horizontal force exerted on the car.