3 years ago

The group of test subject that are NOT given the experimental treatment is called what?

Physics

1 answer:

-BARSIC- [3]3 years ago

5 0

Answer:

The group that remains unaltered is called the control group.

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Compute the velocity of an object orbiting at height 2Re above the surface of earth

I am Lyosha [343]

Answer:

The orbital speed can be found using v = SQRT(G*M/R). The R value (radius of orbit) is the earth's radius plus the height above the earth - in this case, 6.59 x 106 m.

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3 years ago

How can density be determined in a lab of a rectangular solid?

True [87]

We will first record its mass and then its volume by measuring its dimensions
then divide mass by volume and will get density of regular solid

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3 years ago

A reconnaissance plane flies 545 km away from

Nikolay [14]

Answer:

681.6/ms

Explanation:

A reconnaissance plane flies 545 km away from its base at 568 m/s. then flies back to its base at 852 m/s.

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Answer in its of m/s

Avg speed of the round trip is

2*568*852/(568+852)= 681.6/ms

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3 years ago

Suppose the earth is shaped as a sphere with radius 4,0004,000 miles and suppose it rotates once every 24 hours. How many miles

Alenkinab [10]

Answer:

1047 miles

Explanation:

The radius of the Earth is

$r = 4000$ (miles)

So its circumference, which is the total length of the equator, is given by

$L=2\pi r= 2\pi(4000)=25133 mi$

Now we know that the Earth rotates once every 24 hours. So the distance through which the equator moves in one hour is equal to its total length divided by the number of hours, 24:

$L' = \frac{25133 mi}{24h}=1047 mi$

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3 years ago

Radon is the heaviest naturally radioactive ________________ gas. A) noble B) halogen C) group 1 D) diatomic

Sever21 [200]

(A) noble gases / group 18

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3 years ago

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