3 years ago

When energy is produced in a reaction it

Physics

1 answer:

goblinko [34]3 years ago

4 0

The correct answer is b i believe

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Which statement BEST explains why the specific heat of water is higher than the specific heat of most other substances?

solniwko [45]

Due to its polarity and hydrogen bonding water can absorb heat without a significant temperature change.. The high specific heat of water helps regulate the rate at which air changes temperature, which is why the temperature change between seasons is gradual instead of sudden, especially near the oceans.

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3 years ago

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A child is riding a bike at a speed of 6m/s with a total kinetic energy of 1224J. If the mass of the child is 30kg, what is the

UkoKoshka [18]

Answer:

Mass of bike = 38 kg.

Explanation:

Kinetic energy is given by the expression, $KE = \frac{1}{2} mv^2$ , where m is the mass and v is the velocity.

Here speed of child riding bike = 6 m/s

Mass of child = 30 kg

Total kinetic energy = 1224 J

Let the mass of bike be, m kg

So, total mass of child and bike = (m + 30) kg

Substituting,

$1224 = \frac{1}{2}* (m+30)*6^2\\ \\ m+30=68\\ \\ m=38kg$

So, mass of bike = 38 kg.

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4 years ago

What accurately describes what happens when water vapor condenses into dew in terms of energy

Andreyy89

The awnser is condensation

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3 years ago

A train travels 190km in 3.0 hours and then 120 km in 2.0 hours. What is it’s average speed ?

xxMikexx [17]

Answer:

60 km/h

Explanation:

Simplify the speed:

120÷2=60

Hence, the average speed is 60 km/h.

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2 years ago

PLEASE HURRYYYy THIS IS DUE IN 5 minutes!!!!!!

Vilka [71]

Answer:

there is no momentum

Explanation:

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