When a star is moving away from us, the observed frequencies of light are lower than the actual frequencies. this illustration of the doppler effect is called?

Why does an object in motion stay in motion unless acted on by an unbalanced force? A) because forces are what stop and start motion B) because balanced forces cannot exist in nature C) because motion is the inherent state of all matter D) because

Why do we classify elements

Do a stretched spring and a box on a high shelf both have potential energy why or why not explain you answer?

Is A car traveling at 39 m/s starts to decelerate steadily. It comes to a complete stop in 15 seconds. What is its acceleration?

What force involves the attraction between objects with mass? Gravitational Electromagnetic Weak nuclear Strong nuclear

An oil drop with a mass of 8.3 grams and a charge of + 2.2 mC is floating 7.68 meters above a positively charged floor. What is the magnitude of the charge on the floor?

True or false? disk blocks are made up of one or more sectors

Write a paragraph showing the relationship between chemistry and physical based on what you've learned from the periodic table

An aluminum screw has a density of 2.7 g/mL and a volume of 15mL. What is the mass of the screw?

Compare and contrast power and work.