3 years ago

Who was the creator of sports

Physics

1 answer:

Elden [556K]3 years ago

8 0

The first Olympic Games were in Greece

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Why construction is present near the bulb

vova2212 [387]

Answer:

The constriction causes the mercury column to break under tension, leaving a vacuum between the bottom of the column and that in the bulb, and the top of the column stays still at the position reached in the body - a "peak hold" system.

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3 years ago

Whats the units for velocity

jeka57 [31]

The units of velocity is :
meter per second (m/s)

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3 years ago

6.7.1 Current and Current Density A sphere of radius 10 mm that carries a charge of 8 nC =8x 10°C is whirled in a circle at the

aev [14]

Answer:

Part a)

Rate of charge flow is known as electric current

Part b)

Average current flow is

$i = 4\times 10^{-7} A$

Part c)

As we know that current density is current per unit area

$j = 1.27 \times 10^{-3} A/m^2$

Explanation:

As we know that angular frequency of rotation is

$\omega = 100\pi rad/s$

now by basic definition of electric current

Part a)

Rate of charge flow is known as electric current

$i = \frac{dq}{dt}$

so here we have

$i = \frac{Q}{T}$

$i = Qf$

Part b)

here we know that

$\omega = 2\pi f$

$100\pi = 2\pi f$

$f = 50 Hz$

now we have

$i = (8\times 10^{-9})(50)$

$i = 4\times 10^{-7} A$

Part c)

As we know that current density is current per unit area

So we have

$j = \frac{i}{A}$

$j = \frac{4\times 10^{-7}}{\pi(10\times 10^{-3})^2}$

$j = 1.27 \times 10^{-3} A/m^2$

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3 years ago

A neutral object has:

mars1129 [50]

Answer:

c. Only neutrons.

hope it helps :)

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2 years ago

The height of an object is 10 cm, and the height of its image is 6 cm. What is the magnification?

kipiarov [429]

magnification = $\bf\dfrac{height of image}{height of object}$

= $\bf\dfrac{6cm}{10cm}$

= 0.6

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2 years ago