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Umnica [9.8K]
3 years ago
8

What is the kinetic energy of a 3-kilogram ball that is rolling at 2 meters per second

Physics
1 answer:
melomori [17]3 years ago
5 0
It has a kinetic energy of 6 jules
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A 20 cm long spring is attached to a wall. The spring stretches to a length of 22 cm when you pull on it with a force of 100 n.
kenny6666 [7]

Answer:

5000 N/m

Explanation:

Hooke's law for the spring is

F = k \Delta x

where here we have

F = 100 N is the force applied to the spring

k is the spring constant

\Delta x = 22 cm - 20 cm = 2 cm = 0.02 m is the stretching of the spring with respect to its equilibrium position

Solving the equation for k, we find the spring constant:

k=\frac{F}{\Delta x}=\frac{100 N}{0.02 m}=5000 N/m

8 0
4 years ago
Plz HELP
zubka84 [21]
The 2nd has the most porosity

Infiltration

That's all I can answer for you. Hope it helps
3 0
4 years ago
List possible causes of fever and explain the benefits of fever
olga2289 [7]

Answer:

Fever or elevated body temperature might be caused by:

A virus.

A bacterial infection.

Heat exhaustion.

Certain inflammatory conditions such as rheumatoid arthritis — inflammation of the lining of your joints (synovium)

A malignant tumor.

Many illness-causing microbes do best at the body's normal temperature. A fever raises the temperature beyond which certain microbes need to reproduce. A fever also kicks your child's immune system into high gear, spurring the rapid production of bug-clobbering white blood cells.

Explanation:

google lol

7 0
3 years ago
Describe electronegativity, and explain the trend of electronegativity in the Periodic Table
vaieri [72.5K]

Explanation:

Electronegativity is the property of an atom that attracts the shared pair of an electron to itself. There is a trend in the periodic table.

While moving down in a group, the electronegativity decreases. This is due to the reason that as we move down the number of shells added and so the electron become very far from the pull of the nucleus.

As we move across a period the electronegativity increases. This is because of the no. of charge on the nucleus increase.

8 0
3 years ago
If the accepted value is 343 m/s, what is the best description of tonya’s data?
Nezavi [6.7K]
This depends on what are the values of Tonya's data. We can say that it is precise if the all data points are almost located at one area and it can be near or far from the accepted value. We can say that it is accurate when the data are near or equal to the accepted value.
7 0
3 years ago
Read 2 more answers
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