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3 years ago

What is measurement?

Physics

1 answer:

ValentinkaMS [17]3 years ago

4 0

Answer:

the process of associating numbers with physical quantities and phenomena.

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The temperature of a silver bar rises by 10°C when it absorbs 1.23kJ of energy by heat. The mass of the bar is 525g. Determine t

andrey2020 [161]

Answer:

Is 12° becz when it's will be gonto at minus then its effect in our body

Explanation:

I hope it's helpful for you

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3 years ago

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A diverging lens has a focal length of magnitude 22.8 cm. (a) Locate the images for each of the following object distances. 45.6

Nostrana [21]

(a) -15.2 cm

We can solve the problem by using the lens equation:

$\frac{1}{f}=\frac{1}{p}+\frac{1}{q}$

where

f = -22.8 cm is the focal length of the lens (negative because it is a diverging lens)

p = 45.6 cm is the distance of the object from the lens

q is the distance of the image from the lens

Solving the equation for q, we find the position of the image:

$\frac{1}{q}=\frac{1}{f}-\frac{1}{p}=\frac{1}{-22.8 cm}-\frac{1}{45.6 cm}=-0.066 cm^{-1}$

$q=\frac{1}{-0.066 cm^{-1}}=-15.2 cm$

and the negative sign means that the image is virtual.

(b) -11.4 cm

In this case, the distance of the object from the lens is

p = 22.8 cm

Substituting into the lens equation, we can find the new image distance, q:

$\frac{1}{q}=\frac{1}{f}-\frac{1}{p}=\frac{1}{-22.8 cm}-\frac{1}{22.8 cm}=-\frac{2}{22.8 cm}$

$q=\frac{-22.8 cm}{2}=-11.4 cm$

and the negative sign means that the image is virtual.

(c) -7.6 cm

In this case, the distance of the object from the lens is

p = 11.4 cm

Substituting into the lens equation, we can find the new image distance, q:

$\frac{1}{q}=\frac{1}{f}-\frac{1}{p}=\frac{1}{-22.8 cm}-\frac{1}{11.4 cm}=-0.132 cm^{-1}$

$q=\frac{1}{0.132 cm^{-1}}=-7.6 cm$

and again, the negative sign means that the image is virtual.

3 0

3 years ago

Find the magnitude of the angular momentum of the second hand on a clock about an axis through the center of the clock face. Ass

Naddika [18.5K]

Answer:

L = 4.711 *10^{-6} kg m2/s

Explanation:

$i =\frac{ml^3}{3}$

$= \frac{0.00*.15^2}{3}$

=4.5*10^-5

angular velocity

$\omega = \frac{2\pi}{60}$

= 0.1047 rad/s

the angular momentum,

$L = I\omega$

$L = 4.5*10^{-5}* 0.1047 rad/s$

$L = 4.711 *10^{-6} kg m2/s$

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3 years ago

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What 2 planets have the shortest distance between them

grigory [225]

The two plants that have the shortest distance between them are Mercury and Venus which is roughly <span>31,248,757 miles separated from each other.</span>

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4 years ago

I’m not sure how to determine the answer to this, I specifically need help with B.

galina1969 [7]

Answer:

B. From positions A and D.

Explanation:

<u>Types Of Energy Transfers</u>

Heat can be transferred in three ways: by conduction, convection, and by radiation.

Conduction is the transfer of energy from one molecule to another by direct contact.

Convection is the movement of heat by a fluid such as water or air.

Radiation is the transfer of heat by electromagnetic waves.

8 0

3 years ago

What is measurement?​

What is measurement?