Suppose Galileo dropped a lead ball (100 kilograms) and a glass ball (1 kilogram) from the Leaning Tower of Pisa. Which one hit the ground first? (Assume that there is no air resistance.) lead ball glass ball both at the same time either one, but not both at the same time

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Answer 1

Answer: If he dropped them both at the same time, then as close as anyone could tell, they both hit the ground at the same time.

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A water skier has a mass of 79.0 kg and accelerates at 1.40 m/s2. What is the net force acting on him? F = ___ NAnswer choices 56.411177.60.018 80.4774.2

You travel 20.0 mph for 0.500 hour, 40.0 mph for 1.00 hour, 30.0 mph for 0.500 hour, and 50.0 mph for 2.00 hours. What is the total distance traveled?

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Speed is $(distance)/(time)$ , so because you already know the time(.5 + 1 + .5 + 2 = 4 hours), you want to find the distance traveled.
$(Speed)/(time) = ((distance)/(time))/(time)=(distance)/((time)/(time))=distance$
So you set it up like this:
$(20mph)/(.5\ hour)= 10 miles \n (40mph)/(1\ hour)= 40 miles\n (30mph)/(.5\ hour)= 15miles\n (50mph)/(2\ hours)=100miles \n Add\ them:\n 10+40+15+100=165miles$
You traveled 165 miles total.

The equation E=mc^2 relates energy and.a. Force.
b. Mass.
c. Gravity.
d. Work.

Answers

B. Mass

It explains that,
"Matter and Energy are Interchangeable."
It's Einstein's equation meaning Energy is equal to the mass multiplied by the speed of light squared.

Use newton's first law of motion to explain why you feel tossed around whenever a roller coaster goes over a hill or through a loop.

Answers

Newton's first law states that an object at rest will stay at rest && an object in motion will remain in motion unless acted on by another force. With that being said you feel tossed around because you are initially at rest but when you ride the roller coaster you take it's course of motion.

Hoped this helped!

Explanation:

A roller coaster is hard to stop because it has a lot of inertia. Inertia can be simplified to, "objects want to keep doing what they are doing." It's when they are forced to do something different that they are doing that is why roller coaster riders experience the float or tossing around of the ride.

Study the example and choose the influence on perception. Those computer geeks are all the same. They spend all day playing video games and programming their computers to serve them breakfast. I don't think I've ever seen one reading a real book or throwing a baseball. Why, they're almost like machines!a. primacy-recency
b. attribution
c. stereotyping
d. self-fulfilling prophecy

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The choices above are social psychology termsthat help describe the people’s actions in their everyday interaction withpeople. The sentence example is: Those computer geeks are all the same.

Theyspend all day playing video games and programming their computers to serve thembreakfast. I don't think I've ever seen one reading a real book or throwing abaseball. Why, they're almost like machines!

Is an example of stereotyping. Stereotypinghappens when a person applies a single group behavior or minority behavior to awhole group ‘s behavior sharing the same characteristic.

Answer:

C.) Stereotyping

Explanation:

Odyssey ware

Dalton's ideas on atomic theory

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The scientist thought that the atom was the smallest particle in the universe is John Dalton. He established the atomic theory which consists of five; elements are made of extremely small particles called atoms, atoms of different element have different sizes, mass and physic – chemical properties, atoms cannot be divided further, destroyed or created, atoms can combine to form compounds and in chemical reaction, atoms can be combined, separated or rearranged.

Sound travels fastest in _____.

Answers

Answer:

Sound travels fastest in solids

Explanation:

Sound is a type of mechanical waves. Mechanical waves are produced by the oscillations of the particles in the medium the wave is travelling through.

The speed of a mechanical wave depends on the density of the medium: the higher the density, the higher the speed. This is because in a medium with higher density, atoms/molecules are closer together, so they collide more frequently and therefore the wave can be transmitted faster and more efficiently.

Since solids have higher density than liquids and gases, this also means that mechanical waves (so, sound as well) travel faster in solids than liquids or gases.

Sound travels fastest in solids,than liquids, and faster in liquids, than in gases.

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