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Kamila Sampson
A minibus drives 212 km in 2 hours 10 minutes. What is its average speed in kilometers per hour?
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German Hubbard
What is the charge of plasma?

A. Positive

B. Negative

C. Neutral
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Jayda Bauer
Examine the situation.

Lloyd is studying the effect of breakfast cereal on the health of rats. He suspects that the cereal may be unhealthy. He feeds rats various amounts of breakfast cereal over a six-week period. He weighs the rats using a digital lab balance at the beginning of the experiment and then again at the end of the experiment. Then, he calculates the change in weight.

When writing the conclusion of his report, Lloyd states that the breakfast cereal is not a healthy choice for school children since it causes them to gain weight unnecessarily.

What component of scientific argumentation is missing from Lloyds work?

graphs and tables in the written report

empirical data that supports his claim

appropriate equipment for use in the experiment

accurate measurements made during the experiment
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Karley Bolton
An electron travels into a 0.5 T magnetic field perpendicular to its path, where it moves in a circular arc of diameter 0.028 m. What is the kinetic energy of the electron?
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Jay Patrick
What feels the strongest pull toward Earth and why? a box containing 10 baseballs or a box containing 15 baseballs?
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Markus Newman
Hello what is the meaning of physical science
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Preston Richards
Our galaxy, the Milky Way, has a diameter of about 100,000 light years. How many years would it take a spacecraft to cross the galaxy if it could travel at 99% the speed of light?
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PBJ
What information on the periodic table is used to complete electron dot diagrams?
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Maximilian Camacho
A two-slit Fraunhofer interference-diffraction pattern is observed with light of wavelength 672 nm. The slits have widths of 0.03 mm and are separated by 0.24 mm. How many bright fringes will be seen inside the central diffraction maximum?
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Leach
What is the primary mechanical advantage of a screw?
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Blaine Baxter
Find the density of seawater at a depth where the pressure is 950 atm if the density at the surface is 1100 kg/m3. Seawater has a bulk modulus of 2.3 * 10^9N/m2.

Answer in units of kg/m3.
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Benji
If you want to double the kinetic energy of a gas molecule, by what factor must you increase its momentum?

A) 16

B) √2

C) 2

D) 2√2

E) 4
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Christopher
A 62 pound box is on an incline. Determine the minimum force P that would result in the box starting to slide up the incline. (include units with answer)
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Josue Salinas
This rock, known as balance rock, sits on a thin spike of rock in a canyon in idaho. explain the forces that keep the rock balanced on its tiny pedestal.
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Triston Mcfarland
How much kinetic energy does a 7.2-kg dog need to make a vertical jump of 1.2 m? (gravity is 9.8)
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