3 years ago

An object's heat capacity is defined to be

1 answer:

5 0

Answer:

Heat capacity (C) is the amount of energy needed to raise the temperature of a specific substance by 1 degree Celsius. (A)

Hope this helped :)

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Helge, Steve, and Heidi are sitting on a sled on a slope covered with a hard snow. The sled is stationary. The friends have diff

joja [24]

Answer:

Heldi is right

Explanation:

It will not move even if more people or one person gets off it will stay the same til a force pushes down on it.

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3 years ago

What particle idenifies each particular

snow_tiger [21]

Answer:

protons

Explanation:

The proton identifies an atom as that of a particular element. The atomic number is equal to the number of protons in the nucleus of an atom.

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3 years ago

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The most abundant climate type over the face of the earth is

erastovalidia [21]

It is Humid Continental but i could be wrong

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3 years ago

A new roller coaster contains a loop-the-loop in which the car and rider are completely upside down. If the radius of the loop i

Oduvanchick [21]

To solve this problem it is necessary to apply the concepts based on Newton's second law and the Centripetal Force.

That is to say,

$F_c = F_w$

Where,

$F_c =$ Centripetal Force

$F_w =$ Weight Force

Expanding the terms we have to,

$mg = \frac{mv^2}{r}$

$gr = v^2$

$v = \sqrt{gr}$

Where,

r = Radius

g = Gravity

v = Velocity

Replacing with our values we have

$v = \sqrt{(9.8)(11.8)}$

$v = 10.75m/s$

Therefore the minimum speed must the car traverse the loop so that the rider does not fall out while upside down at the top is 10.75m/s

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3 years ago

If the pressing force on the slidding surfaces is greater then friction will be

Tema [17]

Answer:

Kinetic friction is lesser than limiting friction. Two surfaces are rubbed together, first with a smaller force and then with a greater force.

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3 years ago