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MrRa [10]
3 years ago
9

Physics is defined as:

Physics
2 answers:
nikitadnepr [17]3 years ago
5 0

Answer:

B. Developed out of efforts of man trying to explain our physical environment.

Explanation:

This is because physics, as we all know of, is considered to be <em>crucial to understanding the world around us</em>, making it the most basic and fundamental of science.

Veseljchak [2.6K]3 years ago
4 0
B. Developed out of efforts of man trying to explain our physical environment.

Physics is the study of matter and motion.
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Rubber rods charged by rubbing with cat fur repel each other. Glass rods charged by rubbing with silk repel each other. A rubber
puteri [66]

Answer:

C. A rubber rod and a glass rod charged this way have opposite charges on them.

Explanation:

When a rubber rod is rubbed against cat fur, it acquires a negative charge, it becomes negatively charged.

When you then try to bring two rubber rod's together, they repel because like charges repel.

Meanwhile, when you rub a glass rod against silk, it loses electrons to the silk material and becomes positively charged.

When you bring two positively charged glass rod's together, they repel, because like charges repel.

However, when you bring the rubber rod and a glass rod together, the attract each other because unlike/opposite charges attract.

5 0
3 years ago
What is the change in thermal energy E if the coefficent of kinetic friction between the box and floor is .4 , the distance the
Jet001 [13]

This question can be solved using the concept of friction energy.

The thermal energy change is b "258.4 J".

The change in thermal energy will be equal to the friction energy produced during the motion of the box.

Change\ In\ Thermal\ Energy = E = Friction\ Energy\\\\E = \mu fd

where,

μ = coefficient of kinetic friction = 0.4

f = force applied = 38 N

d = distance traveled by the box = 17 m

Therefore,

E = (0.4)(38\ N)(17\ m)

<u>E = 258.4 J</u>

Learn more about friction energy here:

brainly.com/question/1343045?referrer=searchResults

7 0
1 year ago
An archery contestant
storchak [24]

Answer: A

Explanation:

8 0
3 years ago
Read 2 more answers
Increased________will lower viscosity
MrRa [10]
The answer is high temperatures
8 0
3 years ago
Read 2 more answers
A given individual is unable to see objects clearly when he is beyond 80 cm. What power lens should be used to correct this prob
Sophie [7]

Answer:

Explanation:

The person will have normal eye if he can see objects placed even at infinite  

distance. He suffers from short shortsightedness. He can not see beyond 80 cm. He requires diverging lens ( concave lens ) the focal length of which will be 80 cm , because in that case, light coming from infinity will appear to be coming from 80 cm so he can see them.  

Focal length in cm = - 80cm

Power =- 100/80 D = -1.25 Diopters

3 0
2 years ago
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