How long will it take take light moving at 300,000 km/s to reach us from the sun? The sun is 15,000,000 km from earth.

A negatively charged particle is attracted to A. negatively charged particles, B. positively charged particles, C. only particles that are large. D. all particles that are located close by,

What are some of the forces that are found in skateboarding?

What are organs that do a common job

Why do scientist use radioactive decay to figure out how old stuff is

Find the centroid of the beam cross section find the area moment of inertia about the centroidal axis

Ethylene (C2H4) reacts with oxygen gas to produce carbon dioxide and water. 45.0 grams of ethylene reacts, how many grams of carbon dioxide gas will be produced?

What causes ice to melt and water to boil

A block of mass 3.5 kg slides down a frictionless inclined plane of length 6.4 m that makes an angle of 30 degrees with the horizontal. if the block is released from rest at the top of the incline, what is its speed at the bottom

What is the wavelength of an earthquake wave if it has a speed of 5 km/s and a frequency of 10 Hz?

The gamma ray released by each decay carries 140kev of energy. find the total energy e released by decays in the 2 hours.