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SOVA2 [1]
3 years ago
10

The amount of heat required to melt lead at it melting temperature is 23.0 kJ/kg. The amount of heat required to melt mercury at

its melting temperature is 11.4 kJ/kg. What is the effect of adding 24 kJ of thermal energy to 1 kg of mercury and lead when each have just reached their melting temperatures?
The addition of 24 kJ of energy will allow all of the mercury and lead to change from solid to liquid. The temperature of each substance will also increase.

The addition of 24 kJ of energy will allow all of the mercury and lead to change from solid to liquid. The temperature of each substance will not change.

The addition of 24 kJ of energy will allow all of the mercury to change from solid to liquid, and some of the lead to change from solid to liquid. Only the temperature of the mercury will increase.

The addition of 24 kJ of energy will allow all of the mercury and lead to change from liquid to gas. The temperature of each substance will increase.
Physics
2 answers:
svet-max [94.6K]3 years ago
4 0

The addition of 24 kJ of energy will allow all of the mercury and lead to change from solid to liquid. The temperature of each substance will also increase.

GarryVolchara [31]3 years ago
3 0

the addition of 24 kj of energy will allow all of the mercury and lead to change from solid to liquid. the temperature of each substance will also increase.

this is the answer as i did the exam and got it right!! thanks to the other person

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Who invented the wedge simple machine and why?
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Answer:

Gene Sarazen began to win tournaments in 1935 with a new club he had invented that was specialized for sand play. He is hailed as the inventor of the sand wedge.

Explanation:

A wedge is a triangular shaped tool, and is a portable inclined plane, and one of the six classical simple machines. It can be used to separate two objects or portions of an object, lift up an object, or hold an object in place. It functions by converting a force applied to its blunt end into forces perpendicular (normal) to its inclined surfaces. The mechanical advantage of a wedge is given by the ratio of the length of its slope to its width.[1][2] Although a short wedge with a wide angle may do a job faster, it requires more force than a long wedge with a narrow angle.

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1) Write Newton's three laws of motion (20 points). 2) Define acceleration (20 points). 3) Write the Month and Day of the Assign
vaieri [72.5K]

Answer:

Hey

I have no idea when YOUR assignment is due.

Newtons 1rst law:

An object that has constant motion will remain at that speed unless acted on by an external force.

Newtons 2nd law:

F=ma (force=mass*acceleration)

Newtons 3rd law:

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I wrote all that^

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ok that is the answer ok

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