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Tom [10]
2 years ago
12

Covers 70 precent of earths surface

Chemistry
1 answer:
Anastaziya [24]2 years ago
5 0

Answer:

<h2><u>W</u><u>ater</u> covers 70 percent of earth's surface.</h2>
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Will was riding his bike when a dog ran out in front of him. he slammed on his brakes. during this quick stop, some of the mecha
riadik2000 [5.3K]

Answer is: heat energy.

Braking is the process of controlling the velocity of an object (in this example bicycle) by inhibiting its motion.

Mechanical energy can be either kinetic or potential energy and has to do with the energy of position and motion of an object.

Kinetic energy is energy of the speed of an object and how much mass it has; basically how the object is moving.

Potential energy is type of energy is stored energy; it can be increased by getting into a higher position and/or stretching an object such as a rubber band.

A mechanical brake applies a friction force to convert the kinetic energy of the bicycle into heat energy which then dissipates into the atmosphere.

3 0
4 years ago
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10 Points
Dahasolnce [82]

Answer:

I think it is A

Explanation:

8 0
4 years ago
Air is an example of a mixture because the elements and compounds that make up air retain their individual properties. T or F
netineya [11]

Answer:

True

Explanation:

This is true because no chemical bonding or change was involved only mechanical mixing.

6 0
3 years ago
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A student made a graph to show the chemical equilibrium position of a reaction. The student forgot to label the y-axis of the gr
Kazeer [188]

Answer:

D. concentration, as the concentrations of reactants and products remain unchanged after equilibrium is reached.

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7 0
3 years ago
The mass of an object is 13.76 g. the volume of the object is 2.83 ml. what is the density of the object to the correct number o
Firlakuza [10]

Answer:

D ≈ 4.86 g/mL

Explanation:

Density = Mass over Volume

D = m/V

Step 1: Define variables

m = 13.76 g

V = 2.83 mL

D = unknown

Step 2: Substitute and Evaluate for Density

D = 13.76 g/2.83 mL

D = 4.8621908127208480565371024734982 g/mL

Step 3: Simplify

We are given 3 sig figs.

4.8621908127208480565371024734982 g/mL ≈ 4.86 g/mL

7 0
3 years ago
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