What are the four main parts of a spiral galaxy?

In which step (s) did a chemical change most likely occur?

Blocks A (mass 3.00 kg) and B (mass 9.00 kg) move on a frictionless, horizontal surface. Initially, block B is at rest and block A is moving toward it at 5.00 m/s. The blocks are equipped with ideal spring bumpers.

A 500-Ω resistor, an uncharged 1.50-μF capacitor, and a 6.16-V emf are connected in series. (a) What is the initial current? (b) What is the RC time constant? (c) What is the current after one time constant?

Which statement correctly describes mass-energy equivalence?

If the moon phase is seen as a waxing crescent moon in london, what phase of the moon would be seen in new york if it's viewed at the same time?

How fast would the moon need to travel in order to escape the gravitational pull of Earth, if Earth has a mass of 5.98 X 1024 kg and the distance from Earth to the moon is 3.84 x 108 m?

6. A technlclan can be electrocuted when working on HEVs or EVs. A) O True B) O False

You light a light bulb with a 1.5 volt battery. if the bulb has a resistance of 10 ohms, how much current is flowing?

How are the mass and weight an object related? Include a description with words and a equation.

Which layer of the atmosphere is the top layer of the thermosphere?