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LiRa [457]
4 years ago
14

Name two elements that have similar properties. How can you tell using the periodic table?

Physics
1 answer:
tangare [24]4 years ago
7 0
Helium and nitrogen because they are both from the noble gas group.
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10. A boy can raise a rock that weighs 95 N by using a lever and applying a force of 15 N. what is the mechanical advantages of
Minchanka [31]

The following are the answers to the questions presented:

 

<span>1.    </span>Mechanical Advantage = 95 ⁄ 15    

MA = 6.33

2.       The wheel-and-axle principle.

 

I am hoping that these answers have satisfied your queries and it will be able to help you in your endeavors, and if you would like, feel free to ask another question.

7 0
4 years ago
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A force of 500 N acts horizontally on a 10,000 g body. What is its horizontal acceleration
Paladinen [302]
200n because it's 2×5=10so maybe try solving the problem like that ok does that help
8 0
4 years ago
8. A rectangle is measured to be 6.4 +0.2 cm by 8.3 $0.2 cm.
mamaluj [8]

Answer:

a) The perimeter of the rectangle is 29.4 centimeters.

b) The uncertainty in its perimeter is 0.8 centimeters.

Explanation:

a) From Geometry we remember that the perimeter of the rectangle (p), measured in centimeters, is represented by the following formula:

p = 2\cdot (w+l) (1)

Where:

w - Width, measured in centimeters.

l - Length, measured in centimeters.

If we know that w = 6.4\,cm and l = 8.3\,cm, then the perimeter of the rectangle is:

p = 2\cdot (6.4\,cm+8.3\,cm)

p = 29.4\,cm

The perimeter of the rectangle is 29.4 centimeters.

b) The uncertainty of the perimeter (\Delta p), measured in centimeters, is estimated by differences. That is:

\Delta p = 2\cdot (\Delta w + \Delta l)  (2)

Where:

\Delta w - Uncertainty in width, measured in centimeters.

\Delta l - Uncertainty in length, measured in centimeters.

If we know that \Delta w = 0.2\,cm and \Delta l = 0.2\,cm, then the uncertainty in perimeter is:

\Delta p = 2\cdot (0.2\,cm+0.2\,cm)

\Delta p = 0.8\,cm

The uncertainty in its perimeter is 0.8 centimeters.

5 0
3 years ago
A rectangular coil lies flat on a horizontal surface. A bar magnet is held above the center of the coil with its north pole poin
Llana [10]

Answer:

<em>There is no induced current on the coil.</em>

Explanation:

Current is induced in a coil or a circuit, when there is a break of flux linkage. A break in flux linkage is caused by a changing magnetic field, and must be achieved by a relative motion between the coil and the magnet. Holding the magnet above the center of the coil will cause no changing magnetic filed since there is no relative motion between the coil and the magnet.

7 0
3 years ago
A solution has a pH of 8. Which best describes the solution?
harkovskaia [24]

Answer:

D

Explanation:

a weak base is the answer

4 0
3 years ago
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