Analyze how heat transfer occurs during the processes of conduction and convection.

Answers

Answer 1

Answer: During conduction, two substances are in direct contact with one another. When the molecules begin to gain more energy, they move around more and as they bump into one another, energy gets transferred.
During convection, a continuous current (convection current) transfers heat energy through a liquid/gas. The heat rises, and meets cooler areas.
Hope that helped you.

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A particle moves horizontally in uniform circular motion, over a horizontal xy plane. At one instant, it moves through the point at coordinates (2.50 m, 2.50 m) with a velocity of -5.00i hat m/s and an acceleration of -10.0j m/s2. What are the coordinates of the center of the circular path?
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What would be the result of an alpha particle coming into a magnetic field?A) The alpha particle will stop moving.
B) The alpha particle will reverse its direction.
C) The alpha particle will be deflected in a curve path.
Eliminate
D) The alpha particle will continue to travel in a straight line.

Answers

Answer: C) The alpha particle will be deflected in a curve path.

Explanation:

Alpha particle carries +2 charge. It is a Helium ion: He⁺²

When any charged particle enters a magnetic field, it experiences a magnetic force perpendicular to direction of the velocity of the particle and the direction of the magnetic field. Thus, the alpha particle moves in a circular path.

Hence, the correct answer is: The result of an alpha particle coming into a magnetic field is C) The alpha particle will be deflected in a curve path.

The right answer for the question that is being asked and shown above is that: "C) The alpha particle will be deflected in a curve path. " the result of an alpha particle coming into a magnetic field is that C) The alpha particle will be deflected in a curve path.

Which of the following is most closely related to an activated complex?a. rate limiter
b. energy barrier
c. collision group
d. transition state

Answers

Among the choices above, the one that is most closely related to an activated complex is the transition state. The answer is letter D. This formation forms quickly and does not stay in a way compound is. It usually forms during the enzyme – substrate reaction.

The diagram shows a person holding a bow and arrow. Which will most likely increase the kinetic energy in this system? a not releasing the string b increasing the mass of the arrow c releasing the string d pulling back less on the string

Answers

Answer:

releasing the string.

Explanation:

ed2020

Answer:

b. Increasing the mass of the arrow.

Explanation:

The formula is K=1/2mv^2. Increasing the mass also increases the kinetic energy.

An ultrasound unit is being used to measure a patient's heartbeat by combining the emitted 2.0 MHz signal with the sound waves reflected from the moving tissue of one point on the heart. The beat frequency between the two signals has a maximum value of 560 Hz . What is the maximum speed of the heart tissue? The speed of ultrasound waves in human tissue is 1540 m/s.Express your answer to two significant figures and include the appropriate units.

Answers

Hi there,
for this question we have:
Signal 2.0 MHz = Emitted so we can call it $f_e$
and we need the Reflected = $f_(r)$
In this question, we have a source which goes to the heart and a reflected which comes back from the heart and we need the speed of the reflected.
So you should know that the speed of reflected is lower than the source(Emitted).
we also know: ΔBeat frequency(max) = 560 Hz = $f_(b)$
so we have:
$f_(e)$ - $f_(r)$ = $f_(b)$
so frequency of Reflected is:
2.0 × 10^6 Hz - 560 Hz = 1.99 × 10^6 Hz = $f_(r)$
now you know that Lambda = v/f
so if we find the lambda with our Emitted then we can find v with the Reflected:
Lambda = 1540(m/s) / 2.0 × 10^6 Hz = 7.7 × 10^-4 m
=> $v_(max)$ = (lambda)( $f_(r)$
=> 7.7 × 10^-4m (1.99 × 10^6Hz) = 1532 m/s
so the $v_(max)$ is equal to 1532 m/s :)))
This question is solved by two top teachers as fast as they could :))
I hope this is helpful
have a nice day

PLEASE HELP ME Color corresponds to the ______________ of light waves. wave speed cycles wavelength

Answers

Wavelength. Each wavelength is a certain color. For instance, shorter wavelengths (like 470nm) will be blue or violet, while longer wavelengths (like 650nm) will be red. Hope this helps! :)

If you place one staple on an electronic balance, the balance still reads 0.0 grams. However, if you place210 staples on the balance, it reads 6.80 grams. What is the mass of one staple?

Answers

mass of 1 staple = 6.8 g/210 staples
mass of 1 staple = 0.032380952 g
Hope that helps!!

Answer:

210/6.8 = 1/x

210x = 6.8

x = 0.03238 grams = 32.4 milligrams

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