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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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A satellite revolves around a planet at an altitude equal to the radius of the planet. the force of gravitational interaction be
Illusion [34]
<span>We can use the equation for the force of gravity to solve this question. F = G M1 M2 / R^2 Let R be the radius of the planet. f0 = G M1 M2 / (2R)^2 f0 = (1/4) x (G M1 M2 / R^2) We can find an expression for f2. f2 = G M1 M2 / (4R)^2 f2 = (1/16) x (G M1 M2 / R^2) We can express f2 in terms of f0: f2 = (4/16) x f0 f2 = 0.25 f0</span>
7 0
3 years ago
Read 2 more answers
How much power does it take to lift 30.0 N 10.0 m high in 10.00 s?
Nadya [2.5K]

The power required is 30 Watt.

Let us recall that power is defined as the rate of doing work. Hence, we can write as follows;

Power = Work done/ time taken

Now;

work done =  Force × distance

Force = 30.0 N

Distance = 10.0 m

work done = 30.0 N × 10.0 m = 300 J

The power expended = 300 J/10.00 s = 30 Watt

Learn more: brainly.com/question/64224

8 0
3 years ago
Read 2 more answers
A hammer is used to hit a nail into a board. Which statement is correct about the forces at play between the nail and the hammer
Montano1993 [528]

Answer:

reviewing the final statements, the correct one is the quarter

The nail exerts an equal force on the hammer in the opposite direction.

Explanation:

This is an action-reaction problem or Newton's third law, which states that forces in naturals occur in pairs.

This is the foregoing, the hammer exerts a force on the nail of magnitude F and it will direct downwards, if we call this action and the nail exerts a force on the hammer of equal magnitude but opposite direction bone directed upwards, each force is applied in one of the bodies.

The difference in result that each force is that the force between the nail exerts a very high pressure (relation between the force between the nail area), instead the area of ​​the hammer is much greater, therefore the pressure is small.

When reviewing the final statements, the correct one is the quarter

The nail exerts an equal force on the hammer in the opposite direction.

6 0
3 years ago
Carry's car has a mass of 1000 kg and its brakes can apply 8000 N of force. If she is driving at 24 m/s and sees something in th
-Dominant- [34]

3s

Explanation:

Given parameters:

Mass of car = 1000kg

Force applied = 8000N

speed = 24m/s

Unknown:

time taken for the car to stop = ?

Solution:

According to newton's second law of motion; "the force on a body is the product of its mass and acceleration".

  Force = mass x acceleration

  let us find the acceleration of the car;

     a = \frac{F}{M}  = \frac{8000}{1000}  = 8m/s²

since the car is accelerating at a rate of  8m/s², when the brakes are applied, it will start decelerating at the constant rate, - 8m/s²

Applying the appropriate equation of motion;

     V = U + at

V is the final velocity

U is the initial velocity

a is the acceleration

t is the time taken

        final velocity = 0

       0 = U + at

     -U = at

    -24 = -8t

         t = 3s

learn more:

Newton's laws brainly.com/question/11411375

#learnwithBrainly

8 0
4 years ago
According to Newton's first law, an object in motion will stay in motion unless:
Nadusha1986 [10]

Answer: unless it's acted upon by an external force

Explanation: Newton first law of motion State that an object will continue in it state of rest or in motion, unless it is been acted upon by an external force

8 0
3 years ago
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