The astronomical object known as Crab Nebula is thhe remnant of an exploded star. The explosion was seen by the Chinese in 1054 C. E. However, the Crab Nebula is about 3500 LY distance from the Earth In what year did the star actually explode.

List some exothermic and endothermic processes

Icombat car and a semi-truck are both traveling at the same velocity which has more kinetic energy

One circuit is equivalent to another when (a) the same load has the same voltage and current when connected to either circuit (b) different loads have the same voltage and current when connected to either circuit (c) the circuits have equal voltage

When riding your skateboard you crash into a curb, the skateboard stops, and you continue moving forward. Which law of motion is being described in this scenario? A. Law of Universal Gravitation B. Newton's Second Law of Motion C.

There is a balance of heat coming into and going out of earth. This is known as the?

When blue light of wavelength 450 nm falls on a single slit, the first dark bands on either side of center are separated by 45.0

An object is moving east, and its velocity changes from 65 m/s to 25 m/s in 10 seconds. Which describes the acceleration? 4 m/s2 in negative acceleration 4 m/s2 in positive acceleration 9 m/s2 in positive acceleration 9 m/s2 in negative acceleration

Two students walk in the same direction along a straight path at a constant speed-one at 0.90 m/s and the other at 1.90 m/s. •How far would the students have to walk so that the faster student arrives 5.50 min before the slower student? A.) 460s B.

During the process of accretion, each planet-in-the-making, or proto-planet, grew in size and mass. The amount of gravity for the proto-planets is best represented by which graph?

Theories and Laws. • How are they alike? • How are they different? • Can you explain why scientific theories will change over time? • Give an example of a scientific theory that has changed.