Big bang theorist

a. the universe has been and will continue to be as it is now
b. the universe is a never ending cycle of expansion and contraction
c. the universe started with an explosion and expansion of a very hot, dense, compact fireball
d. the universe looks the same in the past, present, and future, and does not change over time

After a big snowfall, you take your favorite rocket-powered sled out to a wide field. the field is 195 m across, and you know that your sled accelerates at a rate of 3.65 m/s2 when the rocket is on. how much time will it take the sled to cross the field starting from rest, assuming the rocket is on the whole time?

The image shows a pendulum in simple harmonic motion the pendulum starts at a and swing to e

Which statements describe the movement of ocean currents around the globe? check all that apply. strong winds force warm water to sink to the ocean floor. the coriolis effect causes warm and cold water to mix. cool dense water sinks to the ocean floor. warm water replaces cool surface water. wind blowing parallel to the shore causes upwelling of cool water.