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skad [1K]
3 years ago
12

Water is a compound because it A. cannot be broken down into simpler substances. B. always has two hydrogen atoms for each oxyge

n atom. C. is made of water atoms joined together. D. both a and b
Physics
2 answers:
hjlf3 years ago
7 0
I'm almost positive it's b
Rashid [163]3 years ago
5 0

Answer: Option (B) is the correct answer.

Explanation:

A compound is defined as a substance in which two or more different elements in a fixed ratio by mass combine chemically with each other.

For example, chemical formula of water is H_{2}O and it is a compound because here two atoms of hydrogen chemically combine with one atom of oxygen.

And, the ratio of these atoms is 2 : 1. A compound can be broken down into simpler substance by chemical means only.

Whereas an element is a substance that contains only same type of atoms that cannot be broken down into simpler substances.

Thus, we can conclude that water is a compound because it always has two hydrogen atoms for each oxygen atom.

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The work done on an elevator that has a mass of 1000kg and lifted 4m in 10 seconds is how many joules.
GaryK [48]

Answer:

39,200 Joules

3920 watts

Explanation:

5 0
4 years ago
A wheel has a radius of 9 centimeters and an axle radius of 3 centimeters. The IMA of the system is ___?
otez555 [7]

Answer:

Answer is C.

Explanation:

To calculate the IMA for a wheel and axle, find the ratio of the larger radius to the smaller radius:

IMA = R/r

IMA = 9/3

IMA = 3

4 0
3 years ago
Over time Pangaea broke apart to form other continents.
Travka [436]

Answer:

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3 years ago
PLS HELP!!!- The moon rotates around the Earth every 28 days. What is the frequency of the moon’s revolution?
Naily [24]

Answer: the frequency is every 27.322 days

6 0
3 years ago
An arrow is shot parallel to horizontal from a height of 1.4 meters. It has a velocity of 49 m/s.
Mkey [24]

The time taken for the arrow to hit the ground is 0.53 s.

The horizontal distance traveled by the arrow is 25.97 m.

The given parameters:

  • Initial horizontal velocity, v_x = 49 m/s
  • Initial vertical velocity, v_y = 0

<h3>What is time of motion?</h3>
  • This is the time taken for a projectile to land on the plane of projection.

The time of motion is calculated as follows;

h = v_yt + \frac{1}{2} gt^2\\\\h = 0 + \frac{1}{2} gt^2\\\\h = \frac{1}{2} gt^2\\\\t = \sqrt{\frac{2h}{g} } \\\\t = \sqrt{\frac{2\times 1.4}{9.8} }\\\\t = 0.53 \ s

The horizontal distance traveled by the arrow is calculated as follows;

X = v_x t\\\\X = (49\ m/s) \times (0.53 \ s)\\\\X = 25.97 \ m

Learn more about time of motion here: brainly.com/question/2364404

5 0
2 years ago
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