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3 years ago

8

Heat can be transferred in several ways. Which of the following is an example of conduction? (DOK 2) A The sun is shining on a m

etal chair. B A fire in the fireplace is heating a room C Someone touching a hot metal pan DA hair dryer blowing your hair

1 answer:

forsale [732]3 years ago

8 0

Answer:

Explanation:

G yvyvybybybububunununu

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You add 500 mL of water at 10°C to 100 mL of water at 70°C. What is the

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Answer:

Option (c) : 20°C

Explanation:

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T(final) = 500* 10 + 100*70/600 = 20°C

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What is the source of all magnetism?

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amplifying signals is the correct answer

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2 years ago

Cyclotrons are widely used in nuclear medicine for producing short-lived radioactive isotopes. These cyclotrons typically accele

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Answer:

Part a)

$v = 3.16 \times 10^7 m/s$

Part b)

r = 0.166 m

Explanation:

Part a)

As we know that the energy of the Hydride ion is given as

$E = 5 MeV$

here we have

$\frac{1}{2}mv^2 = 5\times 10^6(1.6 \times 10^{-19})$

also we know that

$m = 1.6 \times 10^{-27} kg$

now we have

$v = \sqrt{\frac{2 \times 5 \times 10^6(1.6 \times 10^{-19}}{1.6\times 10^{-27}}$

$v = 3.16 \times 10^7 m/s$

Part b)

As we know that magnetic force on the charge is centripetal force

so we have

$qvB = \frac{mv^2}{r}$

so we have

$r = \frac{mv}{qB}$

so we have

$r = \frac{1.6 \times 10^{-27}(3.16 \times 10^7)}{(1.6 \times 10^{-19}) 1.9}$

$r = 0.166 m$

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