D is at rest at the top of a 2 m high slope. The sled has a mass of 45 kg. The sled's potential energy is J?

Gravity pulls gases and dust particles in space toward one another, squeezing them into a smaller and smaller space. The temperature at the center rises high enough for fusion of hydrogen to begin.

Through which one of the following mediums is the velocity of a sound wave the greatest? A. Lead B. Water C. Air D. Steel

Discuss the production, transmission, and usage of electricity in the context of conservation of energy. When electricity is "used" or we say that energy is "wasted," what is actually happening?

Is there any questions about the human or animal behavior that you would really like to answer? Generate a hypothesis and briefly describe how you would conduct an experiment to answer your question.

Taking the direction west to be positive, and east to be negative, what is the average acceleration of a jet ski that goes from rest to 10 m/s west in 4 seconds? A. 2.5 m/s2 B. 0.4 m/s2 C. - 0.4 m/s2 D. - 2.5 m/s2

One of the longer sides of a kite is 39 feet. one of the shorter sides is 25 feet. half the length of the shorter diagonal is 15 feet. what is the area of the kite?

As the width of an opening in a barrier increases, how will the amount of diffraction of the planar waves change as they pass through the opening? A. It will increase. B. It will decrease. C. It will remain the same.

Two forces whose resultant is 100N, are perpendicular to each other. if one of them makes an angle of 60° with the resultant, calculate it's magnitude Calculate the absolute pressure of an ocean depth of 1200atm.

So this is a very logical question but, where did any of us come from? Do note that I am an atheist and I do not believe in God. Why well if God was real then who were his paretns. You cannot tell me that there is just a God with no parents.

Which condition is a neuron in when the outside of the neuron has a net positive charge and the inside has a net negative charge?. Threshold. Action potential. Resting potential