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Physics
Karly Patrick
How many (whole number of) 77 kg people
can safely occupy an elevator that can hold a
maximum mass of exactly 1 metric ton? A
metric ton is 1.000 * 103
kg.
Answer in units of people
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Physics
Allyson Massey
Balanced forces do not change the motion of an object
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Physics
Patricia Dorsey
Maritime climates can be expected in the middle of large continents.
True
False
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Physics
Santos Ramirez
Why do scientists think that our solar system must have formed sometime after nearby supernovae explosions?
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Physics
Jameson Becker
A professor sits on a rotating stool that is spinning at 10.0 rpm while she holds a heavy weight in each of her hands. Her outstretched hands are 0.785 m from the axis of rotation, which passes through her head into the center of the stool. When she symmetrically pulls the weights in closer to her body, her angular speed increases to 32.5 rpm. Neglecting the mass of the professor, how far are the weights from the rotational axis after she pulls her arms in
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Physics
Karma Richards
If an injury is caused by impact from an object alone, is this considered a caught-in or - between incident?
Select the best option
No, this is a struck-by incident
Yes
No, this type of incident is undefined
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Physics
Madelynn Allison
Even though animals can communicate with each other to a limited extent, no animal can express itself through:
A : motions
B : noises
C : speech
D : instinct
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Physics
Giovanni
1. a. What is the name of the 2d Century Roman Scientist and Astrologer who created a set of "Handy
Tables of data to compute the position of the Sun, moon and stars?
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Physics
Samuel Cole
What are the primary colors of light
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Physics
Isaac Obrien
A light-year is the distance light travels in one year, at a speed = 2.998 x 10^8 m/s.
(a) How many meters are there in 1.00 light years?
(b) An AU is the average distance from the Sun to the Earth, 1.50 x 10^8. How many AU are there in 1.00 light-year?
(c) What is the speed of light in AU/h?
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Physics
Guest
Which pair shows processes that are the reverse of one another?
vaporization, sublimation
evaporation, vaporization
condensation, vaporization
sublimation, evaporation
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Physics
Mayra Kaiser
Consider a weather balloon floating in the air. There are three forces acting on this balloon: the force of gravity is FG, the force from lift towards balloon is FL, and the force from the wind is labeled Fw. The orientation of these forces along with a coordinate system is given below:
Assume that || FG || = 20 N, || FL || = 25 N, and || Fw ll = 15 N.
Required:
Find the magnitude of the resultant force acting on the weather balloon and round your answer to two decimal places.
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Physics
Sage Conrad
If you walk at a speed of 3 meters per second, how far will you walk in 11 seconds?
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Physics
Mayra
Are oranges called oranges because oranges are orange, or is orange called orange because oranges are orange?
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Physics
Alexis Roth
An object that has an equal number or protons and electrons
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