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3 years ago

1. A change in which one or more substances are converted into new substances is a

Physics

1 answer:

Ratling [72]3 years ago

4 0

Answer:

CHEMICAL CHANGE:

A change in which one or more substances are converted into new substances is a chemical change.

EXPLANATION:

Chemical changes occur when a substance combines with another to form a new substance, called chemical synthesis or, alternatively, chemical decomposition into two or more different substances.

EXAMPLE:

Examples of Chemical Change in Everyday Life

Burning of paper and log of wood.

Digestion of food.

Boiling an egg.

Chemical battery usage.

Electroplating a metal.

Baking a cake.

Milk going sour.

Various metabolic reactions that take place in the cells.

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A railroad freight car of mass 3.34 × 104 kg collides with a stationary caboose car. They couple together, and 19.0% of the init

Tresset [83]

Answer:

4.123 * 10∧4 kg

Explanation:

mass of car M' = 3.34 * 10∧4 kg

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from law of conservation of momentum ,

M' V' = ( M' + M'' ) v

V = M' V' / ( M' + M'' )

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therefore , M' / ( M' + M" ) = 0.81

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3 years ago

An organized arrangement of information in labeled rows and columns is called a _____?

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It is called a table

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3 years ago

A student ran 60 meters in 1 minute. Calculate the speed. Provide your answer in meters per second.

Elena-2011 [213]

Answer:

Speed, S = 0.5m/s

Explanation:

Given the following data;

Distance = 30 meters

Time = 1 minute = 60 seconds

To find the speed;

Speed can be defined as distance covered per unit time. Speed is a scalar quantity and as such it has magnitude but no direction.

Mathematically, speed is given by the equation;

$Speed = \frac{distance}{time}$

Substituting into the above formula;

$S = \frac{30}{60}$

Speed, S = 0.5m/s

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3 years ago