What is the kinetic energy of a 250 kg object that is moving with a speed of 20 m/s? if the velocity of an object is doubled , what will be change in its kinetic energy?.

Did the universe cool off or get hotter as it expanded after the 'big bang"?

Whats begin with t, ends with t has t in it

Spider crabs live in the shallow regions of the ocean floor. algae tend to grow on the surface of spider crabs. the algae provide the crabs protection from predators by camouflaging them. the spider crabs give the algae shelter. what does this description suggest? 1. the algae are parasites of the spider crabs. 2. the algae and the spider crabs have a mutualistic relationship. 3. the spider crabs are commensals, and the algae are parasites. 4. the spider crabs benefit from the algae living on them. 5. the spider crabs are parasites of the algae.