If we wanted to describe and better understand the structure of the rings of Saturn, we might develop a

1 answer:

6 0

The Greek philosopher Aristotle and the Roman Catholic Church also believed the sun revolved around the earth. In 1543, Nicolaus Copernicus published a new theory stating the earth revolves around the sun. This is known as the Copernican theory.

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If a marathon runner averages 9.50 mi/h, how many minutes does it take him or her to run a 26.22-mi marathon?

horsena [70]

Answer: 196 minutes

Explanation: 26.22/9.50 = 2.76

2 hours and 76 minutes equals 196 minutes

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2 years ago

A research submarine has a 10-cm-diameter window that is 8.4 cm thick. The manufacturer says the window can withstand forces up

Dmitrij [34]

Pnet = Po + dgh

Density of saltwater = 1030 kg/m^3. 

Disregard the thickness. Assuming it's a circular window, then the area is pi(r^2). 

d = 20 cm = 0.2 m 
r = d/2 = 0.1 m 

A = pi(r^2) 
A = 3.14159265(.1^2) 
A = 0.0314159265 m^2 

p = F/A 
p = (1.1 x 10^6) / (0.0314159265) 
p = 35,014,087.5 Pa 

1 atm = 101,325 Pa 

P = Po + dgh 
h = (P - Po) / dg 
h = (35,014,087.5 - 101,325) / (1030 x 9.81) 
h = 3 455.23812 m 
h = 3.5 km

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2 years ago

Read 2 more answers

1-Calculate Req

ArbitrLikvidat [17]

Answer:

1. 21.66 Ohms

2. 3.38 A

3. 6.7 V

Explanation:

1. Req = 6+2 = 8 Ohms (2 and 6 are in a series circuit)

Req = 1/8 +1/4 = 3/8 = 8/3 = 2.66 Ohms (8 and 4 are parallel, so we will add them using this equation)

Req = 2.66 + 1 + 9 + 3 + 6 = 21.66 Ohms

2. I = V/R = 9/2.66 = 3.38 A (In a series circuit, the current is the same across the resistors, so we will add them and divided them by 9 volts)

3. V = IR = 3.38 x 2 = 6.7 V (In a series circuit, the voltage is different, so each resistor will have a different voltage.)

I hope this helps. I am not an expert in physics but its ok :)

Note: If the answer benefited u, mark me as the brainliest answer if u can, thx.

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2 years ago

How does nuclear energy work? Explain

fgiga [73]

There are many processes to get nuclear energy. Nuclear energy is basically energy from an atom. For example fission is where the nucleus of an atom ( typically radioactive atoms ) gets split then energy is released ( typically heat). And in radioactive decay radiation is released from an radioactive atom. Hope this helps

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2 years ago

20. Consider a model steel bridge that is 1/100 the exact scale of the real bridge that is to be built. a. If the model bridge w

Veseljchak [2.6K]

The model bridge captures all the structural attributes of the real bridge, at a reduced scale.

Part a.
Note that volume is proportional to the cube of length. Therefore the actual bridge will have 100^3 = 10^6 times the mass of the model bridge.

Because the model bridge weighs 50 N, the real bridge weighs
(50 N)*10^6 = 50 MN.

Part b.
The model bridge matches the structural characteristics of the actual bridge.
Therefore the real bridge will not sag either.

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2 years ago