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3 years ago

A graph shows how the temperature of a substance changes as energy is added steadily over time.

Physics

2 answers:

OlgaM077 [116]3 years ago

8 0

Answer:

A flat, horizontal line

Explanation:

A flat, horizontal line indicates a phase change.

The temperature does not increase because the added heat goes into converting one phase into another.

A is wrong. A downward-sloping line indicates that the temperature is decreasing with time.

C is wrong. An upward-sloping line indicates that the temperature is increasing with time.

lisov135 [29]3 years ago

5 0

Answer:

horizontal line

Explanation:

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Transcranial magnetic stimulation (TMS) is a noninvasive technique used to stimulate regions of the human brain. A small coil is

attashe74 [19]

Answer:

0.125 volts

Explanation:

The induced emf can be sufficient to stimulate neuronal activity.

One such device generates a magnetic field within the brain that rises from zero to 1.5 T in 120 ms.

We need to find the induced emf within a circle of tissue of radius 1.6 mm and that is perpendicular to the direction of the field. The formula for the induced emf is given by :

$\epsilon=-\dfrac{d\phi}{dt}$

Where

$\phi$ is magnetic flux

So,

$\epsilon=-\dfrac{d(BA)}{dt}\\\\=2\pi r\times \dfrac{dB}{dt}\\\\=2\pi \times 1.6\times 10^{-3}\times \dfrac{1.5-0}{120\times 10^{-3}}\\\\=0.125\ V$

So, the induced emf is equal to 0.125 volts.

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3 years ago

Which energy conversion takes place when a solar cell is used to light a street lamp?

allsm [11]

Answer:

the answer is for the question is B

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2 years ago

16. Calculate the mass in kg of an object that is being accelerated 12 m/s with a force of 654 N.

Cloud [144]

(654m/s ) / (12m/s) = 54.5 kg.

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2 years ago

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a block of wood has a length of 4 cm a width of 5 cm and a height of 10 cm what is the volume of the wood

geniusboy [140]

Volume= Length X width X height.

Plug in the values for each and solve for the volume.

V= (L)(W)(H)

V=(4cm)(5cm)(10cm).

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3 years ago

The pressure at the center of Earth is much ________ than the air pressure on top of Mountain Everest.

sergey [27]

Answer:

higher or greater

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2 years ago