PHYSICS HIGH SCHOOL

Carbon and hydrogen are examples of pure substances or

Answers

Answer 1
Answer: Carbon and hydrogen are also examples of elements

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Which image shows an example of the electromagnetic force in action?

Answers

The second image showing an electromagnet is an example of the electromagnetic force in action therefore the correct option is B

What is electromagnetic force?

It is a type of force that occur between electrically charged particles. The electromagnetic force is the combination of all the electrical and magnetic forces generated from any charged particle,

These electromagnetic forces either be attractive or repulsive.

The force generated from a simple bar magnet is an example of the electromagnative force, hence the correct option is B

Learn more about electromagnetic forces

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Answer:

the answer is A the one that has the green ball as particles

Explanation:

If The dimensions of a brick that weighs 25N are 0.19m x 0.07m x 0.095m. What pressure does the brick exert on the ground if it is resting on its largest face?

Answers

1 newton per square meter = 1 pascal of pressure.

The largest face of the brick is (0.19 x 0.095) = .01805 square meter

25N/0.01805 = 1,385 newtons per square meter = 1,385 pascal  = 1.385 kPa

Select all the factors listed that influence the density of ocean water.a. tides
b. salinity
c. fecundity
d. temperature E. wave height F. current speed

Answers

Answer: b and d

Explanation:

I don’t really have an explanation I just took the test and this was the answer good luck

Planets in our solar system revolve around the Sun because A.
the Sun is the hottest object in our solar system.
B.
the Sun is the brightest object in our solar system.
C.
the Sun is the most massive object in our solar system.
D.
the Sun is the slowest object in our solar system

Answers

C. The sun is the most massive object in our solar system.
It also has a stronger gravitational pull.
C. is the answer i think i searched it.

The horizontal sweep of an oscilloscope is rated ina. volts/division
b. amps/division
c. seconds/division
d. ohms/divisionthe horizontal sweep of an oscilloscope is rated in seconds/division.

Answers

C is the correct answer

Answer:

Second division

Explanation:

A 3.8 kg object to is lifted 12 meters. approximately how much work is performed during lifing? A) 45.6 J B)588 J C) 466.9J D) 372.4 J

Answers

You would do mass x distance which is 3.8 kg x 12m which equals A. 45.6 J.
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PLZ EXPLAIN THE EQUATION AND I WILL GIVE BRAINLIST You are out and about in the country and your father sees a rock that he really wants in the yard. Now you must get the very heavy rock into the back of a truck. The truck bed is 3 feet off the ground. Your father pulls out a 5-foot plank and begins to set up a ramp. At the same time, you (who know about mechanical advantage!) have found a plank that is 8 feet long, and you show it to your father. Which plank will give you the most mechanical advantage? Calculate the MA for each plank
Predict whether the changes in enthalpy, entropy, and free energy will be positive or negative for the melting of ice, and explain your predictions. How does temperature affect the spontaneity of this process?