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3 years ago

How does radiation move?

Physics

1 answer:

Degger [83]3 years ago

8 0

Radiation can move through empty space . to transfer heat: convection cannot.

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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

8 0

3 years ago

Read 2 more answers

A 1,492.3-kg airplane travels down the runway. Each of its four engines provides a force of

Fittoniya [83]

The acceleration of the air plane is $3.879 \mathrm{m} / \mathrm{s}^{2}$

Explanation:

Given:

The mass of the air plane = 1492.3 kg

Force of each four engine = 1447.5 N

So, the total force of four engines can be calculated as = 4(1447.5) = 5790 N

The force that acts on the object is equal to the product of mass (m) and its acceleration. It can express by the below formula,

$\text {Force }(F)=m \times \text { acceleration }(a)$

The above equation can be written as below to find acceleration,

$a=\frac{F}{m}$

Now. Substitute the given values, we get,

$a=\frac{5790}{1492.3}=3.879 \mathrm{m} / \mathrm{s}^{2}$

3 0

3 years ago

What is the period of a wave if the wavelenght is 110m and the speed is 200m/s? 2 s 100s 200,000 s 0.5 s

cestrela7 [59]

Hello.

The answer would be 0.5 s

Have a nice day

8 0

4 years ago

Read 2 more answers

Plzzz answer this question correctly

tekilochka [14]

Answer:

changing the direction in which a force is exerted

8 0

3 years ago

The period of a pendulum is measured 16 times. The average value of the period over these 16 trials is calculated to be 1.50 sec

marin [14]

Answer:

The additional trials needed is 48 trials

Explanation:

Given;

initial number of trials, n = 16 trials

the standard deviation, σ = 0.24 s

initial standard error, ε = 0.06 s

The standard error is given by;

$\epsilon = \frac{\sigma}{\sqrt{n} }$

To reduce the standard error to 0.03 s, let the additional number of trials = x

$0.03= \frac{0.24}{\sqrt{n+x} } \\\\0.03= \frac{0.24}{\sqrt{16+x} }\\\\0.03\sqrt{16+x} = 0.24\\\\\sqrt{16+x} = \frac{0.24}{0.03} \\\\\sqrt{16+x} = 8\\\\16+x = 8^2\\\\16+x = 64\\\\x = 64 -16\\\\x = 48 \ trials$

Therefore, the additional trials needed is 48 trials.

6 0

3 years ago