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3 years ago

What biomes are found in southern africa?

1 answer:

7 0

The biomes found in Southern Africa contains: Grassland, Thicket, Savanna, Succulent Karoo, Nama Karoo, Forest, Fynbos, and Desert

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Apply what you know about forces to hypothesize how balanced and unbalanced forces acting on a moving car would affect the motio

rosijanka [135]

If an object has a net force acting on it, it will accelerate. The object will speed up, slow down or change direction. An unbalanced force (net force) acting on an objectchanges its speed and/or direction of motion. An unbalanced force is an unopposedforce that causes a change in motion.
thus the car would get its speed, and or direction mixed up

7 0

3 years ago

An electron of mass 9.11 1031 kg has an initial speed of 3.00 105 m/s. It travels in a straight line, and its speed increases to

elena55 [62]

Explanation:

It is given that,

Mass of an electron, $m=9.11\times 10^{-31}\ kg$

Initial speed of the electron, $u=3\times 10^5\ m/s$

Final speed of the electron, $v=7\times 10^5\ m/s$

Distance, d = 5 cm = 0.05 m

(a) The acceleration of the electron is calculated using the third equation of motion as :

$a=\dfrac{v^2-u^2}{2d}$

$a=\dfrac{(7\times 10^5)^2-(3\times 10^5)^2}{2\times 0.05}$

$a=4\times 10^{12}\ m/s^2$

Force exerted on the electron is given by :

$F=m\times a$

$F=9.11\times 10^{-31}\times 4\times 10^{12}$

$F=3.64\times 10^{-18}\ N$

(b) Let W is the weight of the electron. It can be calculated as :

$W=mg$

$W=9.11\times 10^{-31}\times 9.8$

$W=8.92\times 10^{-30}\ N$

Comparison,

$\dfrac{F}{W}=\dfrac{3.64\times 10^{-18}}{8.92\times 10^{-30}}$

$\dfrac{F}{W}=4.08\times 10^{11}$

Hence, this is the required solution.

8 0

3 years ago

if you have several different substances mixed together, like Italian salad dressing, where do the most dense materials go where

Alecsey [184]

If you've ever mixed water and oil together,you've probably noticed that the oil rises to the top and the water stays at the bottom-- no matter how much you try to shake them. This is because oil is less dense than water, making it float to the top. The molecules in oil are larger than those in water, so they don't pack as tightly together as they do in water. In a mixture of oil and vinegar, the oil floats on the vinegar/water mixture, while the solids sink to the bottom. So, if one material floats over another, the material on top is less dense.

Let me know if this helps! :)

5 0

3 years ago

Compare these two waves.

Anastaziya [24]

Answer:

id 272 966 3863

Pas 161005

5 0

3 years ago

The amplitude of a sound is the A. frequency of the sound. B. magnitude of displacement of a sound pressure wave. C. psychologic

AlladinOne [14]

Answer:

Option B. magnitude of displacement of a sound pressure wave

Explanation:

Amplitude is simply the maximum displacement of a wave from its mean position.

6 0

3 years ago

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