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3 years ago

Anyone know the answer to this question?

Physics

1 answer:

LiRa [457]3 years ago

4 0

Answer: neither accurate nor precise

Explanation:

Showing that it should be near 9.8 m/s and the trials aren't near that accuracy, I would say neither.

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What is the formula for convection?

Tju [1.3M]

Convection is transfer of heat between a solid and a moving fluid. Boiling or condensing processes are example for convection processes.

The formula for convection is:

q = hc A dT

where

hc is convective heat transfer coefficient of the process (W/(m2K) or W/(m2oC q
A is the heat transfer area of the surface (m2, ft2)
hc = convective heat transfer coefficient of the process (W/(m2K) or W/(m2oC), Btu/(ft2 h oF))q is heat transferred per unit time (W, Btu/hr)dT is the temperature difference between the surface and the bulk fluid (K or oC, F)

8 0

3 years ago

The voltage applied across a given parallel-plate capacitor is doubled. How is the energy stored in the capacitor affected?

ikadub [295]

Answer:

The energy stored in the capacitor quadruples its original value.

Explanation:

The energy stored in a capacitor is given by the equation

$U=\frac{1}{2}CV^2$

where

C is the capacitance

V is the voltage across the plates

The capacitance, C, depends only on the properties of the capacitor, so it does not change when the voltage applied is changed.

Instead, in this problem the voltage applied is doubled:

V' = 2V

So the new energy stored is

$U'=\frac{1}{2}C(2V)^2=4(\frac{1}{2}CV^2)=4U$

so, the energy stored has quadrupled.

8 0

3 years ago

If you increase the frequency of a sound wave four times, what will happen to its speed?

ozzi

The speed will increase four (4) times when the frequency of sound wave is increased four (4) times.

<h3>How to calculate the frequency of a wave.</h3>

Mathematically, the frequency of a sound wave is given by this formula:

$F = \frac{V}{\lambda}$

Where:

F is the frequency of a sound wave.

V is the velocity of a sound wave.

$\lambda$ is the wavelength of a sound wave.

Note: The frequency of the sound wave is increased four (4) times.

F = 4F

Substituting the given parameters into the formula, we have;

$4F = \frac{V}{\lambda}\\\\V=4F\lambda$

Therefore, the speed will increase four (4) times when the frequency of sound wave is increased four (4) times.

Read more on sound wave here: brainly.com/question/19250621

4 0

3 years ago

Red light has a _____ wavelength and a _____ frequency than does blue light.

Harlamova29_29 [7]

In a spectrum of visible light, we will see that red appears to have a longer wavelength than the blue light. Since wavelength and frequency are inversely proportional then, red will have a smaller frequency than does the blue light.

7 0

4 years ago

Ok ok ik ik this is not the answer but I think you need to hear this

leonid [27]

Answer

oh thanksssss i hope u have a great day

Explanation:

ur a really awesome person and i thank u for that

4 0

2 years ago