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Rina8888 [55]
3 years ago
12

Match the terms correctly

Physics
1 answer:
givi [52]3 years ago
3 0
Lithium is Malleable soft and shiny

Lead is opaque solod and higher density

Fluorine is highly reactive gas

Krypton is non reactive !!
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A 2 kg soccer ball is traveling 28.62m/s when it hits the wall and bounces off of the wall with a velocity of 20 m/s. If the wal
Lesechka [4]

Answer:

0.149 s or 0.15 s

Explanation:

let initially ball is moving towards left  hence initial velocity = - 28.62 m/s

final velocity as ball moves right = +20 m/s

force  = rate of change in momentum

force  = mass × change in velocity / time

or time = mass × change in velocity / force

    time = 2× ( 20 -( -28.62)) / 652.36

    time  = 2× ( 20  +28.62)) / 652.36  

time  =   2× 48 .62/652.36

 time =  0.149 s or 0.15 s

5 0
4 years ago
Two point charges are brought closer together, increasing the force between them by a factor of 17. By what factor was their sep
nignag [31]

Answer:

\dfrac{r_1}{r_2}=4.123

Explanation:

Given:

Final force between them=17(initial force between them)

initial separation between them r_1

Final separation between them r_2

Let Q and q be the charges on them then

F_2=17F_1\\\dfrac{kQq}{r_2^2}=17\dfrac{kQq}{r_1^2}\\\dfrac{r_1^2}{r_2^2}=17\\\dfrac{r_1}{r_2}=4.123

6 0
3 years ago
What mistake did Kamala make? Gamma rays should have a very high frequency, not a very low frequency. Visible light should have
olasank [31]

Answer:

The answer is "Option A".

Explanation:

Please find the complete question in the attached file.

Kamala uses Gamma radiation inside this question should be very high, not very low. Electromagnetic radiation is a penetrating type resulting from radioactive nuclear decline. Its radiation is a very high-frequency, radioactive waveform to frequencies greater than 10^{19} \ Hz usually emitted from the radioactive decline.

6 0
3 years ago
During the new moon phase, why is the Moon not visible in the sky?
Gennadij [26K]

Answer:

Explanation:

The moon gets the light from the sun. When the moon lies between the sun and the earth, only the back portion of the moon gets the light from the sun. So the side facing the sun does not get any light and appears to be dark or does not appear at all.

Hope this helps

plz mark as brainliest!!!!!!!

3 0
3 years ago
For two objects in space with very different masses, the gravitational force causes:
guajiro [1.7K]
The answer is B. The less massive object to orbit the more massive object.
Explanation: The more massive the object, the larger its gravitational pull.
Example: the moon orbits the earth because the moon’s mass is smaller than earth, earth orbits the sun because the earth’s mass is smaller than the sun..
7 0
2 years ago
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