Recent content by billrussell42

Neither one. That is simply loss of resolution with distance. Depth of field is applied to cameras, and it means the range of distance over which the image is in sharp focus for a particular lens setup. For example depth of field for one setup may extend from 2 meters to 3 meters. Depth...

The acceleration is always 9.8 m/s² and points downwards, and it is due to the force of gravity. .

I don't think this is an electronic part, or if it is, it's an inherent part of the switch, as it has a mechanical part to it. You need to replace the entire unit. .

Huh? a wind turbine is not a factory making homes, so the answer is zero. If you mean how many does it power, the largest is about 4 MW. Assuming it runs 100% of the time, which is unlikely, you divide by 1.2 kW, the average house use, to get 4000/1.2 = 3000 homes. .

PD = voltage. This is an AC generator, as you say. AC reverses direction periodically. So asking how to reverse the direction of the voltage is meaningless, as it reverses periodically on it's own. You can increase the voltage many ways, by more turns on the coils, by a stronger magnetic...

Use trig with the angle and length to get the height of the bob above the lowest point. Then you can get the total energy, potential plus kinetic: Kinetic Energy in J if m is in kg and V is in m/s KE = ½mV² Potential Energy in J PE = mgh so the energy at that point is ½mV² + mgh max speed is...

Why do you think it hurts people? .

50 watts and 1.6 m/s, what is force. take one second, and you have 50 J of work to move 1.6 m Work is force x distance 50 = 1.6F F = 31.25 Newton b) double the power, same force, what is the speed now have 100 J in a second 100 = 31.25N * d d = 3.2 m so speed is 3.2 m/a .

50 watts and 1.6 m/s, what is force. take one second, and you have 50 J of work to move 1.6 m Work is force x distance 50 = 1.6F F = 31.25 Newton b) double the power, same force, what is the speed now have 100 J in a second 100 = 31.25N * d d = 3.2 m so speed is 3.2 m/a .

Probably you will be studying the rest of your life, as this is a field that is constantly changing. I don't know what "Professional and Master Electronics and Electronic Design" means, but to get a BS degree in engineering usually takes 4 years. A Masters will take 2 more years typically, and...

It's the other way. Bells came first, then someone noticed that a certain curve was shaped like a bell and called it that. .

Bell System such as a door bell? Or: The Bell System was the AT&T monopoly that provided telephone service in the United States from 1877 to 1984. In 1984, the company was broken up into separate companies, by a Federal mandate. I'll assume you mean door bell. pushbutton, wires, doorbell, and...

Bell System such as a door bell? Or: The Bell System was the AT&T monopoly that provided telephone service in the United States from 1877 to 1984. In 1984, the company was broken up into separate companies, by a Federal mandate. I'll assume you mean door bell. pushbutton, wires, doorbell, and...

It forms a cushion between you and the hard surface of the car windshield or roof or other parts. The cushion decelerates the movement of your head slowly instead of all at once, as would happen without it, when your head hit the windshield. .

first you need to find fish that are made of iron or steel. .