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vodomira [7]
3 years ago
10

How much heat is needed to change the temperature of 3 grams of gold (c = 0.129 ) from 21°C to 363°C? The answer is expressed to

the nearest whole number.
Physics
2 answers:
Anna71 [15]3 years ago
6 0

Answer:

It's  132 or B on edge 2020

Explanation:

Temka [501]3 years ago
3 0

Q= mcΔT

Where Q is heat or energy

M is mass, c is heat capacitance and t is temperature

You have to convert Celsius into kelvin in order to use this formula I believe

Celsius + 273 = Kelvin

21 + 273 = 294K

363 + 273 = 636K

Now...

Q= (0.003)(0.129)(636-294)

Q= 0.132 J if you are using kilograms, in terms of grams which seems more appropriate the answer would be 132J of energy.  

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The property of matter that resists changes in motion is
vredina [299]

Answer:

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6 0
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a spring has a force constant of 100 n/m and an unstretched length of 0.07 m. one end is attached to a post that is free to rota
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F equals 3N with respect to the circle's center, moving in the same direction as the centripetal acceleration.

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An item travelling in a circle is pushed inward toward what is known as the center of rotation, which is essentially what a roller coaster accomplishes when it travels through a loop. The force that maintains an object moving along a curved route is this pull toward the center, or centripetal force.

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6 0
1 year ago
You jump off a truck and accelerate toward the surface of the Earth. Does the Earth accelerate toward you?
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When we jump from the truck and accelerate towards the earth surface, the earth also accelerates towards us but it's acceleration is very negligible.

To find the answer, we need to know about the acceleration of earth due to the gravitational attraction.

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7 0
2 years ago
Ohms law is A.(R=E/W). B.(R=E/1). C.(E/Z). D.none of them
nikklg [1K]

Answer:

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