Which is the fundmental law of energy?

If a student knows a ship traveled 300 meters straight north at 10 km/h, what else does the student know? a. velocity b. acceleration c. average acceleration d. instantaneous speed

Would life be different if the electron were positively charged and the proton were negatively charged? Does the choice of signs have any bearing on physical and chemical interactions? Explain.

Which statement best describes the weather shown by the blue triangles on a line on a weather map? A cold front can cause heavy rain, thunder, and lightning. A warm front brings drizzly weather.

at a particular instant a hot air balloon is 100m in the air and decending at a constant speed of 2m/s at this exact instant a girl throws a ball horizontally relative to herself with an initial speed of 20m/s when she lands where will she find the

What is it called when a unmoving object wants to stay at rest?

If a ball is thrown vertically into the air in the presences of air resistance, would you expect the time during which it rises to be longer or shorter than the time during if falls?

The process of deformation due to plate movements that changes earth's surface is called

If the frequency of a sound wave is 250 hertz and its wavelength is 1.36 meters, what is the wave's velocity?

What will happen if I put my hand in a space vacuum.

You are exploring a distant planet. When your spaceship is in a circular orbit at a distance of 630 km above the planet's surface, the ship's orbital speed is 4900 m/s. By observing the planet, you determine its radius to be 4.48*106m.