how long does it take a 750watt heater operating at full rating to rais the temperature of 1kg of water From 40°C to 70°C {S. H. C=4200j/kg/k and neglecte heat loss}

When would an atom act like a magnet?

Given equation is F=mv * v/R what is the relationship exist between F and R?

Compare protons, electrons, and neutrons with respect to location within atoms, electric charge, and mass.

A 60 kg person who was at a height 90 meters climbs down to the height of 60 meters what was the change of his gpe

A rocket is launched straight up from the surface of the Earth. Consider the time interval after the fuel runs out, while the rocket is moving away from earth. During this process, a. kinetic energy increases and potential energy increases b.

Is mercury (the planet) rocky or gaseous (meaning relating to or having the characteristics of a gas.)

What does one prolonged blast emitted by boat a using an efficient sound producing device indicate?

Feng and Isaac are riding on a merry-ground. Feng rides on a horse at the outer rim of the circular platform, twice as far from the center of the circular platform as Isaac, who rides on an inner horse.

Alice did an experiment to find the relationship between the angle at which a ray of light strikes a mirror and the angle at which the mirror reflects the light. She placed a ray box in front of a mirror.

When the train reaches the bottom of the track and is traveling along the ground, its kinetic energy isJ.