a wheel of mass 38kg is lifted to a height of 0.8m. how much gravitional potential energy is added to the wheel? accélération due to gravity is g=9.8m/s

Tesistance. An increase in voltage causes the flow of electric current to the flow of electric current to . An increase in resistance causes

1. How much force is required to accelerate a 2 kg mass at 3 m/s?

Which causes the thermocline? A. The sun's radiation heats the surface waters, which descend to the depths and bring colder water to the surface. B. The sun's radiation heats equatorial waters more than polar waters. C.

The law of reflection states that if the angle of incidence is 78 degrees, the angle of reflection is ___ degrees.

If you plot the distance d as an ordinate (y-axis) versus the time of fall t as an abscissa (x-axis), do you expect to get a straight line? What type of curve do you expect to get?

When one of the electrons of a particular atom undergoes a transition to a quantum state of lower energy, it a) collides with another of its electrons b) exchanges quantum states with another of its electrons c) undergoes a transition to a quantum

What's the symbol for an ionized bromine atom?

What is the hottest layer in the Sun's atmosphere?

Which do you need to calculate the speed of a wave? A. distance and frequency B. distance and time C. time and frequency

What is one of the benefits that scientists have discovered from organisms' daily exposure to radioisotopes? 1. being able to Carbon date fossils 2. X-ray Imaging capability 3. radiation treatment for cancer 4. invention of microwave cooking