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Sphinxa [80]
3 years ago
15

SOMEONE PLEASE HELPPP!

Physics
1 answer:
wlad13 [49]3 years ago
3 0

Answer:

The first and third one

Explanation:

The roughness of the surfaces is very important when determining friction as well as the force pressed on a surfaces as it helps increase friction.

HOPE IT HELPED

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Titanium's specific heat capacity is 0. 523 j/g*k. how many joules of heat are required to raise the temperature of 2. 50g of ti
ad-work [718]

The amount of heat required to raise the temperature is 706.05J.

To find the answer, we need to know more about the specific heat capacity.

<h3>How to find the heat required to raise the temperature?</h3>
  • Specific heat can be defined as, the amount of heat needed to increase a substance's temperature by one degree for every gram.
  • We have the expression for amount of heat required to raise the temperature from T1 to T2 as,

                                 Q=msΔT

  • We have given with the following values,

                 m=2.50g=2.50*10^{-3}kg\\s=0.523 J/gK=\frac{0.523}{10^{-3}} J/kgK=523J/kgK\\T_1=65^0C=338K\\T_2=600^0C=873K\\

  • Thus, the amount of heat required to raise the temperature is,

            Q=2.5*10^{-3}*523*(873-333)=706.05 J

Thus, we can conclude that, the amount of heat required to raise the temperature is 706.05J.

Learn more about the specific heat capacity here:

brainly.com/question/18798150

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7 0
2 years ago
An atom of potassium has an atomic mass of 39 amu and an atomic number of 19. It therefore has ______ neutrons in its nucleus.
FromTheMoon [43]
A=atomic mass 
Z=atomic number  (nº of protons).
N=neutons.

A=Z+N

Data:
A=39
Z=19

A=Z+N
39=19+N
N=39-19=20.

It therefore has 20 neutrons in its nucleus.
6 0
3 years ago
Read 2 more answers
Voltage is defined as the. Select one: a. force that causes electrons to flow b. opposition to current flow c. basic unit in whi
elena-s [515]

Voltage is defined as the force that causes electrons to flow. That is option A.

<h3>What is a voltage?</h3>

A Voltage is defined as an electromotive force and the potential difference in charge between two points in an electrical field.

It is equally known as the force that causes electrons of a current to flow.

Mathematically, it's = V = current × resistance.

Learn more about current here:

brainly.com/question/1100341

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4 0
2 years ago
Which are negative impact that the internal combustion engine has had on society
OverLord2011 [107]
The internal combustion engine has been criticized for ages for its negative effects on human health as well as the deterioration that it has caused to the environment with the release of Carbon Dioxide (CO2). However, to settle the skeptics, studies have been conducted to prove the environmental benefits of the internal combustion engine.

According to an article written by Dr. Dwight R. Lee, an Economist at the University of Georgia, livestock is responsible for 18% of the greenhouse gases that cause global warming, a far higher statistic than the contribution made by automobiles and aircrafts. The internal combustion engine began replacing horses as a source of power in the early 1900s, which started replacing the outputs from animals with exhaust from tailpipes.
7 0
3 years ago
Read 2 more answers
How long would it take to reach the ground if thrown from43.24m with intial velocity of 7.53s
Alenkasestr [34]

Answer:

10 to 15 seconds

Explanation:

because I don't know but rarity is a strong force and it don't take long for a ball to come down

4 0
3 years ago
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