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Walker Hooper
Physics
What force changes when a sky diver's parachute opens? What force stays the same?
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Kareem Browning
Physics
One car travels 40. meters due east in 5.0 seconds, and a second car travels 64 meters due west in 8.0 seconds. During their periods of travel, the cars definitely had the same
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Oliver Smith
Physics
Silver and Copper rods of equal areas are placed end to end with the free end of the silver rod in ice at 0.00 degrees Celsius and the free end of the copper rod in steam at 100. degrees Celsius. The Silver rod is 15.0 cm in length and the copper rod is 25.0 cm in length.
a) What is the temperature of the junction between copper and sliver when they have come to equilibrium?
b) How much ice (in grams) melts per second?
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Cash Drake
Physics
For which of the following characteristics speed wavelength and frequency is light similar to microwaves and for which does it differ?
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Sharon Barajas
Physics
An open train car, with a mass of 2150 kg, coasts along a horizontal track at the speed 2.83 m/s. The car passes under a loading chute and, as it does so, gravel falls vertically into it for 2.95 s at the rate of 481 kg/s. What is the car's speed v f after the loading is completed? Ignore rolling friction.
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Adalynn Monroe
Physics
A cat chases a mouse across a 0.65 m high
table. The mouse steps out of the way, and
the cat slides off the table and strikes the floor
2.7 m from the edge of the table
The acceleration of gravity is 9.81 m/s2.
What was the cat's speed when it slid off
the table?
Answer in units of m/s.
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Chloe Noble
Physics
How did the operation of factories change with the invention of electric generators?
a. They were able to operate 7 days a week.
c. They were able to operate in the Winter.
b. They were able to operate in the Summer.
d. They were able to operate 24 hours.
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Aedan Massey
Physics
A team of engineers is working together to design a new airplane. The team members each live in different cities. For which purpose is the Internet most useful to the team?
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Bella Edwards
Physics
What force is needed to give a 0.25-kg arrow an acceleration of 196 m/s2? A. 0.25 N B. 49 N C. 196 N D. 748 N
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Isai Greene
Physics
Something that allows electrons to flow easily through it is called
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Maci Browning
Physics
On a camping trip, your friend tells you that fluffing up a down sleeping bag before you go to bed will keep you warmer than sleeping in the same bag when it is still crushed from being in its storage sack. Explain why this happens. (hint: a large amount of air is presnt in an uncrushed sleeping bag)
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Danny Morrison
Physics
4786 joules fer transferred to an 89.0 gram sample of a unknown material with an initial temperature of 23.0°C what is the specific heat of the measure in the final temperature is 89.5°C
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Doctor
Physics
What is true about low resistance wires?
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Darryl Erickson
Physics
If the distance is 640 miles, and the time is 40 hours, whats the distance
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Rambler
Physics
During a chemical reaction what is always transferred
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