How many stars are there in the galaxy

Nikola Tesla used rotating magnetic fields to generate, transmit, and use AC (alternating current). Today alternating current has replaced direct current in most situations.

How much force is needed to make a 60kg object accelerate at a rate of 2.0 m/S2? 62N 62kg 120N or 120Kg

How are the size and shape of oceans continuously changing

How does mechanical energy relate to the work an object can do

5. Which type of energy resource is hamessed beneath the Earth's surface? A. biomass B. solar C. hydroelectric D. geothermal

As part of his meal, a workman has a cup containing a hot drink. In order to keep the drink hot whilst he eats the rest of his meal, he covers the cup, as shown in the figure. Which sources of energy loss does this action reduce? Tick two boxes.

When energy is transformed, the amount of usable energy?

If an object weighs 39.2 n on earth, what is its mass

What happens when pressure is applied to a solid.

A box of mass 1 kg is hung from a spring scale. The reading on the spring scale is approximately 10N. What would be the reading on the spring scale if a box of mass 5 kg is hung from it? (Assume acceleration due to gravity to be 10 m/s2.