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lana [24]
2 years ago
9

5) What type of substance can seep groundwater and make it unusable?

Physics
1 answer:
sergeinik [125]2 years ago
7 0

Answer:

I believe <u>chemicals</u>, though I might be wrong.

Explanation:

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Through what potential difference should electrons be accelerated so that their speed is 1.0 % of the speed of light when they h
omeli [17]

Answer:

Explanation:

Considering non - relativistic approach : ----

Speed of electron = 1 % of speed of light

= .01 x 3 x 10⁸ m /s

= 3 x 10⁶ m /s

Kinetic energy of electron = 1/2 m v²

= .5 x 9.1 x 10⁻³¹ x ( 3 x 10⁶ )²

= 40.95 x 10⁻¹⁹ J

Kinetic energy in electron comes from lose of electrical energy equal to

Ve where V is potential difference under which electron is accelerated and e is electronic charge .

V x e = kinetic energy of electron

V x 1.6 x 10⁻¹⁹ = 40.95 x 10⁻¹⁹

V = 25.6 Volt .

6 0
3 years ago
The position-time equation for a cheetah chasing an antelope is:
pochemuha

Answer:

x = 1.6 + 1.7 t^2      omitting signs

a) at t = 0     x = 1.6 m

b) V = d x / d t = 3.4 t

at t = 0     V = 0

c) A = d^2 x / d t^2 = 3.4     (at t = 0  A = 3.4 m/s^2)

d)  x = 1.6 + 1.7 * (4.4)^2 = 34.5    (position at 4.4 sec = 34.5 m)

4 0
2 years ago
The ancient Egyptians used the stars to _____.
OleMash [197]

Answer:

predict annual flooding

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Jane is sliding down a slide. What kind of motion is she demonstrating?
Over [174]
When Jane is sliding down a slide, she is demonstrating translational motion. 
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3 years ago
Use the following terms in the same sentence:proton, neutron ,and isotope
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Atoms of the same element having equal numbers of protons, but different numbers of neutrons is called isotope.
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