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Physics

Perla Cortez

Three parachutists have the following masses: A: 50 kg, B: 40 kg, C: 75 kg Which one has the greatest terminal velocity?

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Physics

Manuel Murphy

A plane is flying horizontally at a height of 500 m and a constant speed of 429 km/h when an object is projected downward at an initial speed of 35.0 m/s. if air resistance is neglected, the average vertical component of velocity between the object's release and its striking the ground is

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Physics

Savion Wall

Which statements are true?

A. Science is a collection of facts that does not evolve. We have gained all the knowledge we can from science.

B. Scientists observe natural events occurring around them. They question these observations and investigate them.

C. All scientists follow one scientific method of investigation.

D. If a hypothesis is not verified by the results from the scientific method, scientists may either redo the process or create a new hypothesis.

E. Once they reach a conclusion, scientists often keep the results to themselves.

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Physics

Miracle Owen

How many types of quarks are there and what is the name of one of them

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Physics

Cheerio

A windmill produces 1400 watts of electric power that is used to heat water. The efficiency is 100%. How long will it take to raise the temperature of 40 gallons of water by 50∘F?

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Physics

Baylee Richmond

What is a chemical energy

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Physics

Mackenzie Mcclure

Multiple sound waves reflections in a room are called?

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Physics

Gilbert

A shopping mall has a length of 200 m and a width of 75 m. What is the area of the mall?

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Physics

Yurem Villegas

Which scientist proposed the idea of a sun-centered solar system instead of an earth-centered solar system?

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Physics

Carleigh Mendez

Once an object is in focus at medium power, what is the next step?

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Physics

Allyson

According to the concept of length contraction, what happens to the length of an object as it approaches the speed of light and then slows down, eventually coming to a stop? It is always observed as contracting. It is always observed as the same length. It is observed as expanding and then contracting back to its original length. It is observed as contracting and then expanding back to its original length.

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Physics

Jaylene Stevenson

If you could chooses between to nearly identical products the one that is free and the other you have to pay for which would you choose why

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Physics

Paxton Chang

A bicyclist bikes the 56 mi to a city averaging a certain speed. The return trip is made at a speed that is 6 mph slower. Total time for the round trip is 11 hr. Find the bicyclist's average speed on each part of the trip.

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Physics

Angelique Sutton

You have two pendulums with cords that are exactly the same length. one is on earth (with an acceleration due to gravity of 9.81 meters/second2) and the other one is on the moon (with an acceleration due to gravity of 1.63 meters/second2). which one will have a longer period?

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Physics

Leslie

A light-rail train going from one station to the next on a straight section of track accelerates from rest at 1.1 m/s2 for 20 s. It then proceeds at constant speed for 1100 m before slowing down at 2.2 m/s2 until it stops at the station.

How much time does it take the train to go between the stations?

Express your answer using two significant figures. The answer is NOT 20s, as was answered and "verified" previously.

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