3 years ago

Which one has more thermal energy?

Physics

2 answers:

Digiron [165]3 years ago

8 0

Answer:

a bathtub full of warm water

Explanation:

Even though the water in a filled bathtub may be at the same temperature as water in a teacup, the water in the bathtub has more thermal energy because it contains a greater number of water molecules.

Travka [436]3 years ago

4 0

A bathtub full of warm water

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During the first part of a trip, a canoeist covered 65 km at a certain speed. He then traveled 27 km at a speed that was 4 km/

vitfil [10]

Answer:

13 km/h for 65 km

9 km/h for the next 27 km

Explanation:

Velocity of canoe =x km/h for 65 km

Velocity of canoe =x-4 km/h for 27 km after covering 65 km

Total time taken = 9 hours

So,

$\frac{65}{x}+\frac{27}{x-4}=8\\\Rightarrow \frac{65(x-4)+27x}{x^2-4x}=8\\\Rightarrow \frac{92x-260}{8}=x^2-4x\\\Rightarrow 11.5x-32.5=x^2-4x\\\Rightarrow x^2-15.5x+32.5=0$

Solving this quadratic equation we get,

$x=\frac{15.5\pm \sqrt{240.25+130}}{2}=13\ or\ 2.5$

Speed cannot be 2.5 as the speed will become negative for the 27 km stretch.

So, velocity of canoe is <u>13 km/h</u> for 65 km and <u>9 km/h</u> for the next 27 km

7 0

4 years ago

What is the purpose of mucilage in the spaces around the cells of hornworts? Why is this important?

Bumek [7]

New Zealand hornworts and general information on them. ... in the top of the plant and remain attached to it and continue to grow throughout its life. ... are that the spaces between the cells are filled with mucilage rather then air chambers

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3 years ago

1. Order the materials from smallest refractive index to largest refractive index.

kakasveta [241]

Air = 1

Water = 1.33

Glass = 1.52

Quartz = 1.46

Diamond = 2.42

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4 years ago

Why do seismic waves that travel along Earth's surface cause more damage than other seismic waves?