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frozen [14]
3 years ago
5

Define compound and list two examples.

Physics
2 answers:
Liono4ka [1.6K]3 years ago
8 0
A compound is a substance that consists of two or more elements, which is chemically combined, meaning that it could only be split by chemical means. 

Examples:-

- NaCl is salt, chemically combined of Sodium and Chloride. 

- H2O is water, chemically combined of Hydrogen and oxygen. 
svlad2 [7]3 years ago
7 0
Hey there! 

A compound is anything which is made up of two or more elements. Compounds cannot be split physically but only chemically. 

Some examples are: 
1. Water: Hydrogen and Oxygen
2. Salt: Sodium and chlorine

Thank you!
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a coin is dropped from the top of a tall building. determine the coin's (a) velocity and (b) displacement after 1.5 sec.
Lilit [14]
1) v = gt = 10*1.5 = 15 m/s
2) r = gt^2 /2 = 10*(1.5)^2 / 2 = 11.25 meters 
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3 years ago
Galileo was the first scientist to do which of the following? A. estimate the speed of light B. propose the heliocentric theory
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an object is thrown off a cliff with intial pward velocity of 15m/s it strikes the ground with downward velocity of 25 m/s what
Genrish500 [490]

Answer:

20 m

Explanation:

Given:

v₀ = 15 m/s

v = -25 m/s

a = -10 m/s²

Find: Δy

v² = v₀² + 2aΔy

(-25 m/s)² = (15 m/s)² + 2 (-10 m/s²) Δy

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5 0
3 years ago
Assume you have an ice cube and also a small rock that is the same size and shape as the ice cube. Predict what would happen if
Step2247 [10]

Answer: The ice cube would float on top of the water and the rock would sink to the bottom.

Explanation: The ice cube has a smaller density than the rock which allows the ice cube to float but makes the rock sink to the bottom of the glass of water.

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A force vector F1 points due east and has a magnitude of 200N. A second force F2 is added to F1. The resultant of the two vector
PilotLPTM [1.2K]

Answer:

The second vector \vec{F_2} points due West with a magnitude of 600N

Explanation:

The original vector \vec{F_1} points with a magnitude of 200N due east, the Resultant vector \vec{R} points due west (that's how east/west direction can be interpreted, from east to west) with a magnitude of  400N. If we choose East as the positive direction and West as the negative one, we can write the following vectorial equation:

\vec{F_1}+\vec{F_2}=\vec{R}\implies\vec{F_2}=\vec{R}-\vec{F_1}=-400N-200N=-600N

With the negative sign signifying that the vector points west.

3 0
3 years ago
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