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Rzqust [24]
3 years ago
9

How was the earth formed and how has it become what we know today?

Physics
1 answer:
USPshnik [31]3 years ago
7 0

Answer:

Earth formed around 4.54 billion years ago, approximately one-third the age of the universe, by accretion from the solar nebula.

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Which of the following is NOT an example of work?
marysya [2.9K]
I think the answer is c.<span>holding a tray in the cafeteria line</span>
3 0
4 years ago
A triangular plate with height 6 ft and a base of 8 ft is submerged vertically in water so that the top is 4 ft below the surfac
solmaris [256]

Answer:

F=4673.95lbs

Explanation:

Recall weight density of water 62.5 lb/ft^3 and the height 6ft base 8ft

The width of the triangle

\frac{W(x)}{7}=\frac{(8-x)}{2}

The hydrostatic force is the pressure times area of the submerged

W(x)=\frac{7*(8-x)}{4}

F=\int\limits {p} \, dA

F=\int\limits^8_2 {pgx*\frac{7}{4}*(8-x)} \, dx

F=\int\limits^8_2 {62.5*\frac{7}{4}*x*(8-x)} \, dx

F=109.375\int\limits^8_4{(8x-x^2)} \, dx

F=109.375[4x^2-\frac{1}{3}x^3]|4,8

F=109.375*42.73=4673.95lbs

7 0
3 years ago
How would you describe the two projectors used to screen a three-dimensional movie?
True [87]
the answer to this question is B

4 0
3 years ago
Read 2 more answers
A total charge Q is distributed uniformly over a large flat insulating surface of area A . If the electric field magnitude is eq
Andrew [12]

Answer:

a. 1000N/C

Explanation:

Data mentioned in the question

Electrical field magnitude = 1000 NC

Perpendicular distance = 0.1 m

Perpendicular distance = 0.2 m

Based on the above information, the electric field is

As we know that

E = \frac{\sigma}{2\times E_o}

where,

\sigma = surface charge density

E = distance from nearby point to sheet i.e be independent

The distance at 0.1 and 0.2, the electric field would remain the same

So,

Based on the above explanation, the first option is correct

3 0
3 years ago
A car with a mass of 2,000 kg travels at 20 m/s. Which one has the greatest impulse?
sasho [114]

Answer:2000kg

Explanation:

Convert it

4 0
3 years ago
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