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4 years ago

The heat of fusion is the amount of heat required to ______?

Physics

2 answers:

Anton [14]4 years ago

6 0

Answer:

C. Melt 1g of solid into a liquid

Explanation:

Just took test

Marianna [84]4 years ago

5 0

The heat of fusion is the amount of heat required to melt 1 g of solid into a liquid.

The temperature remains constant in the process of phase conversion of the substance. That heat is used to breakdown the forces between molecules. The heat of fusion varies from compound to compound.

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A cyclist travelled 32 kilometers for both the 1st and 2nd hours. He took a 30 minute break to eat his lunch. He then travelled

Reika [66]

Answer:

The cyclist's average speed is 13.43 $\frac{km}{h}$

Explanation:

Speed is a quantity that expresses the relationship between the space traveled by an object and the time used for it. That is, speed is the magnitude that expresses the variation in position of an object and as a function of time, which would be the same as saying that it is the distance traveled by an object in the unit of time.

Average speed relates the change in position to the time taken to effect that change:

$speed=\frac{change in position}{time} =\frac{distance}{time}$

In this case:

total distance traveled= 32 km + 15 km= 47 km
total time= 3 hours that the cyclist travels + 30 minutes of rest = 3 hours + 0.5 hours (being 60 minutes equal to 1 hour, then 30 minutes equals 0.5 hours) = 3.5 hours

Replacing:

$speed=\frac{47 km}{3.5 h}$

and solving, you get:

speed= 13.43 $\frac{km}{h}$

The cyclist's average speed is 13.43 $\frac{km}{h}$

3 0

3 years ago

How many type of linear expansion physic

Katena32 [7]

three types

The three types of thermal expansions are Linear expansion , Superficial expansion and Cubical expansion.

7 0

3 years ago

If two runners take the same amount of time to run a mile, they have the same __________.

kramer

A. they have the same acceleration

I hope this helps!

8 0

4 years ago

Which circuit has the largest equivalent resistance?.

Alexeev081 [22]

The series circuit has the higher equivalent resistance, but to find the larger equivalent resistance you have to use Ohm's law (V2=I2R2), the power dissipated by the resistor can also be found using P2=I22R2=V22R2. To find the equivalent resistance of the circuit, notice that the parallel connection of R2 and R3 is in series with R1, so the equivalent resistance is Req=R1+(1R2+1R3)−1=1.00Ω+(16.00Ω+113.00Ω)−1=5.10Ω.

Hope this helps!
Please give Brainliest!

6 0

3 years ago

Types of problems are generated by resource extraction and usage?

Mekhanik [1.2K]

Extraction of resources costs money.

Problems with usage: for example, coal, when burned, it produces pollution.

7 0

3 years ago