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Soloha48 [4]
2 years ago
5

Help thank you. will mark as brainliest if correct and no link to some unknown websites

Physics
2 answers:
Lapatulllka [165]2 years ago
5 0
The answer is 2. This is where the kinetic energy is being transferred into gravitational potential energy, and then there is complete gravitational potential energy at point 3. So the answer you are looking for is 2. I hope this helps :) please make brainliest
diamong [38]2 years ago
4 0
Position 4!! At position 4 , the roller coaster cart stores the most amount of kinetic energy. When its at position 4 , the kinetic energy of the cart will be converted to gravitational potential energy as the cart increases in height!!

I hope this answered ur qns!! ^^
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Which of the following is the least reliable source of background information for a scientific project?
garri49 [273]

Answer:

general internet site

Explanation:

7 0
3 years ago
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The root-mean-square value of an alternating current of S0Hz frequency is 10 ampere. The time taken by the alternating current i
stealth61 [152]

Answer:

(D ) 5\times10^{-3} sec and 14.14 amp.

Explanation:

Given that, the rms value of current is 10 ampere and its frequency is 50 Hz.

Now maximum value of current can be calculated as,

I_{max}=\sqrt{2}I_{rms}\\I_{max}=10\times \sqrt{2}  \\I_{max}=14.14 amp.

The time period is defined as,

T=\frac{1}{f}\\ T=\frac{1}{50}\\ T=0.02 sec

Now the time taken by alternating current going from zero to maximum value is,

t=\frac{T}{4}\\ t=\frac{0.02}{4}\\ t=5\times 10^{-3}sec

Therefore, the time taken by alternating current to reach maximum value is t=5\times 10^{-3}sec and the peak value of current is 14.14 amp..

7 0
3 years ago
What would happen to the brightness of the bulbs if the switch was opened​
jeka57 [31]
When the switch is open then no current can flow, on the other hand, when it is closed, current will pass through. When only “bulb a” is connected to the battery then more current is flowing to “bulb a” causing it to be bright. So the light of “bulb a” will be dimmer.
6 0
2 years ago
A harvest mouse can detect sounds below the threshold of human hearing, as quiet as −10 dB. Suppose you are sitting in a field o
PtichkaEL [24]

Answer:

The distance from harvest mouse to the leaf is 4.74 m.

Explanation:

Given that,

Intensity = -10 dB

Distance = 1.5 m

We need to calculate the power of intensity

Using formula of power of intensity

P=I_{0}A

P=I_{0}\times4\pi r^2

Put the value into the formula

P=1.0\times10^{-12}\times4\pi\times(1.5)^2

P=28.27\times10^{-12}\ W/m^2

We need to calculate the minimum intensity level

Using formula of minimum intensity

I=10\log_{10}(\dfrac{I}{I_{0}})

-10=10\log_{10}(\dfrac{I}{I_{0}})

\log_{10}\dfrac{I}{I_{0}}=-1

I=10^{-1}\times(1.0\times10^{-12})

I=1\times10^{-13}\ W/m

We need to calculate the area

Using formula of intensity

I=\dfrac{P}{A}

A=\dfrac{P}{I}

Put the value into the formula

A=\dfrac{28.27\times10^{-12}}{1\times10^{-13}}

A=282.7\ m^2

We need to calculate the distance

Using formula of area

A=4\pi r^2

Put the value into the formula

282.7=4\pi\times r^2

r^2=\dfrac{282.7}{4\pi}

r=\sqrt{\dfrac{282.7}{4\pi}}

r=4.74\ m

Hence, The distance from harvest mouse to the leaf is 4.74 m.

6 0
2 years ago
What is the wavelength of a periodic wave that has a frequency of 5.0 Hz and<br> a speed of 10 m/s?
guajiro [1.7K]

Answer:

26

Explanation:

meters per second has a wavelength of 26.

6 0
2 years ago
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