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SCORPION-xisa [38]
3 years ago
8

Flooding on rivers is caused by human activity rather than natural events. Please select the best answer from the choices provid

ed T F
Physics
2 answers:
Olenka [21]3 years ago
5 0
False flooding rivers can be caused by weather and can also happen naturally over time.
Debora [2.8K]3 years ago
4 0

Answer:

False

Explanation:

Rivers are natural sources of water. Human is not responsible for its construction and management.

When flood comes in a river this process can not be maintained by human as they have no role in construction of it. Thus, the given statement is false.

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How does adding more of a substance affect it's density?
fomenos
I’m going to use molasses as an example of a substance.

The mass and volume both change when changing the amount of molasses.
However, the density does not change. This is because the mass and volume increase at the same rate/proportion!

Even though there is more molasses (mass) in test tube A, the molasses also takes up more space (volume). Therefore, the spacing between those tiny particles that make up the molasses is constant (does not change).

The size or amount of a material/substance does not affect its density.
5 0
3 years ago
Read 2 more answers
Which end (blue or red) of the visible spectrum has the longer wavelength? Which has the higher frequency?
Gre4nikov [31]
The red end of the visible spectrum has the longer wavelength while the blue end of the visible spectrum has the higher frequency.
8 0
3 years ago
10.
myrzilka [38]

Answer:

<em>The new period of oscillation is D) 3.0 T</em>

Explanation:

<u>Simple Pendulum</u>

A simple pendulum is a mechanical arrangement that describes periodic motion. The simple pendulum is made of a small bob of mass 'm' suspended by a thin inextensible string.

The period of a simple pendulum is given by

T=2\pi \sqrt{\frac{L}{g}}

Where L is its length and g is the local acceleration of gravity.

If the length of the pendulum was increased to 9 times (L'=9L), the new period of oscillation will be:

T'=2\pi \sqrt{\frac{L'}{g}}

T'=2\pi \sqrt{\frac{9L}{g}}

Taking out the square root of 9 (3):

T'=3*2\pi \sqrt{\frac{L}{g}}

Substituting the original T:

T'=3*T

The new period of oscillation is D) 3.0 T

4 0
2 years ago
1. Describe what is happening at point A when these 3 vectors act on point A. 2. Describe what happen to the resultant vector at
zavuch27 [327]

Answer: Don't know sorry

Explanation:

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A sound wave is called a longitudinal wave? why?Give reason
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Answer:

A sound wave is called a longitudinal wave because compressions and rarefactions in the air produce it. The air particles vibrate parallel to the direction of propagation.

3 0
3 years ago
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