What is diffraction? What type of lenses are there?

Assume a solar cell would produce a current of 500mA and 3 V. What is the power of this solar cell?

What is the force between a 3 Coulomb charge and a 2 Coulomb charge separated by a distance of 5 meters?

An office worker uses an immersion heater to warm 250 g of water in a light, covered, insulated cup from 20°C to 100°C in 4.00 minutes. The heater is a Nichrome resistance wire connected to a 120-V power supply.

The water table is the a. lower boundary of the zone of saturation. b. aquifer. c. zone of aeration. d. upper boundary of the zone of saturation.

The SI unit of force is the

Ways that charges can be transferred

A cricketer can throw a ball to a maximum horizontal distance of 100m. How much high above the ground can he throw same ball

What is the relationship between the slope of the position graph of an object and its velocity?

Differeniate between thermal energy and heat

The term that describes the time when the sun's are directly over the equator is: