A black hole is a star that has

begun to collapse in on itself

too little gravity to emit light

gotten to the middle of its life

become too bright to see

What has the most energy gas liquid or solid

Which statement best explains why electricity should be conserved? A) Fossil fuels generate electricity and are limited in supply. B) Fossil fuels generate electricity and are expensive.

Sally stands 3 meters from the fulcrum. Reggie weighs 800 N and stands 2 meters from the fulcrum. The see saw is balanced. How much does sally weight?

Consider the position of a ball thrown down with an initial speed of 15.0 m/s. what will be its position after 2.16 s? let the initial position be 0. the acceleration due to gravity is 9.806 m/s 2.

A car accelerate from a stop to 27 m/sec in 5 seconds. What was the car's acceleration?

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.