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sammy [17]
3 years ago
15

Which lists imaging techniques that use wave behaviors in order of resolution from the best resolution to the worst?

Physics
1 answer:
ElenaW [278]3 years ago
3 0
<span>C.CT scan, X-ray imaging, MRI 
</span>
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A train slows down as it rounds a sharp horizontal turn, going from 88.0 km/h to 52.0 km/h in the 18.0 s that it takes to round
zmey [24]

Answer:

The acceleration at the moment the train speed reaches 52 kilometers per hour is approximately 1.826 meters per square second.

Explanation:

According to Rotational Physics, the total acceleration of the train rounding the horizontal turn is a combination of tangential (a_{t}) and radial accelerations (a_{r}), measured in meters per square second. The former one represents the change in the magnitude of the velocity, whereas the latter one represents the change in its direction. By definition of magnitude and Pythagorean Theorem we get that magnitude of total acceleration (a), measured in meters per square second, is:

a = \sqrt{a_{r}^{2}+a_{t}^{2}} (Eq. 1)

Magnitudes of tangential and radial accelerations are determined by using the following formulas:

a_{t} = \frac{v_{f}-v_{o}}{t} (Eq. 1)

a_{r} = \frac{v_{f}^{2}}{R} (Eq. 2)

Where:

v_{o}, v_{f} - Initial and final speeds, measured in meters per second.

t - Time, measured in seconds.

R - Radius, measured in meters.

If we know that v_{o} = 24.444\,\frac{m}{s}, v_{f} = 14.444\,\frac{m}{s}, t = 18\,s and R = 120\,m, then the magnitude of the total acceleration when the train speed reaches 52 kilometers per hour is:

a_{t} = \frac{14.444\,\frac{m}{s}-24.444\,\frac{m}{s}  }{18\,s}

a_{t} = -0.556\,\frac{m}{s^{2}}

a_{r} = \frac{\left(14.444\,\frac{m}{s} \right)^{2}}{120\,m}

a_{r} = 1.739\,\frac{m}{s^{2}}

a = \sqrt{\left(-0.556\,\frac{m}{s^{2}} \right)^{2}+\left(1.739\,\frac{m}{s^{2}} \right)^{2}}

a \approx 1.826\,\frac{m}{s^{2}}

The acceleration at the moment the train speed reaches 52 kilometers per hour is approximately 1.826 meters per square second.

8 0
2 years ago
When describing image formation in mirrors, what is the angle of incidence?
lana66690 [7]
'B' is the correct choice.

BUT ... the angle of incidence is not the angle between the light ray
and the mirror.  It's the angle between the light ray and the NORMAL
to the mirror.  The 'normal' is the line that's perpendicular to the mirror.

5 0
3 years ago
Read 2 more answers
What did Blaise Pascal discover, and how did he impact Physics?
yan [13]

Answer:

Well it really depends because he found out about a lot of things in a lot of scientific fields actually. He is known for contributing Pascal's triangle and probability theory. He also invented an early digital calculator and a roulette machine. In the field of physics, Blaise contributed to the study of atmospheric pressure by discovering that vacuums are real and exist in the real world.

6 0
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2. Without changing the mass or height, what else do you think you could do to design a system in which GPE and KE values are mo
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Answer:

jgvvjlvcgkgc

Explanation:

5 0
2 years ago
Why isnt geothermal energy used more often​
Dafna1 [17]
Risk of return on investment is higher than other forms of energy generation.
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