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3 years ago

Which of the following positions would Earth be in if it were winter in the Northern Hemisphere?

Physics

1 answer:

abruzzese [7]3 years ago

6 0

Answer:

Earth's tilted axis causes the seasons. Throughout the year, different parts of Earth receive the Sun's most direct rays. So, when the North Pole tilts toward the Sun, it's summer in the Northern Hemisphere. And when the South Pole tilts toward the Sun, it's winter in the Northern Hemisphere.

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A red photon has a wavelength of 650 nm. An ultraviolet photon has a wavelength of 250 nm. The energy of an ultraviolet photon i

zimovet [89]

The energy of an ultraviolet photon is 2.6 times greater than a red photon.

<h3>Energy of a photon</h3>

The energy of a given photon of light is calculated using the wavelength and the speed of light.

<h3>Energy of a red photon</h3>

The energy of the a red photon at the given wavelength is calculated as follows;

$E_r = \frac{hc}{\lambda} \\\\E_r = \frac{6.67 \times 10^{-34} \times 3 \times 10^8}{650 \times 10^{-9}} \\\\E_r = 3.078 \times 10^{-19} \ J$

<h3>Energy of an ultraviolet photon</h3>

$E_r = \frac{hc}{\lambda} \\\\E_r = \frac{6.67 \times 10^{-34} \times 3 \times 10^8}{250 \times 10^{-9}} \\\\E_r = 8.0 \times 10^{-19} \ J$

<h3>The ratio of the two energies</h3>

$= \frac{8.0 \times 10^{-19}}{3.078 \times 10^{-19}} \\\\= 2.6$

Thus, the energy of an ultraviolet photon is 2.6 times greater than a red photon.

Learn more about energy of a photon here: brainly.com/question/7464909

4 0

3 years ago

Water from a leaking tap begins to fall into

Amanda [17]

Answer:

It will take 20,000 seconds to get a pressure of 200Pa at the bottom of the tank.

Explanation:

The pressure at the bottom of the tank will be

$P = \dfrac{Mg}{A}$

where $M$ is the mass of the water, and $A$ is the base area of the tank.

The base area of the tank is

$A = 0.5m* 2m = 1m^2$ ,

and if we want the pressure at the bottom to be 200pa, then it must be that

$200Pa = \dfrac{M(10m/s^2)}{1m^2}$ ,

solving for $M$ we get:

$M = 20kg\\$

which is the required mass of the water in the tank.

Now, the tank fills at a rate of 2 drops per second or

$2 (0.05g)/s = 0.10g/s = 0.0001kg/s$

since each drop weights 0.05g.

Therefore, the time $t$ it takes to collect 20kg of water will be

$t = 20kg \div \dfrac{0.0001kg}{s}$

$t = 2*10^5s$

which is 55.56 hours or 2 days and 7.56 hours.

Thus, it will take 20,000 seconds to get a pressure of 200Pa at the bottom of the tank.

7 0

3 years ago

More advanced line dances, that requires more intense steps, can be considered

garri49 [273]

Answer:

Vigorous activity

Explanation:

Vigorous activity

3 0

3 years ago

If you have a density of 100 kg/L, and a mass of 1000 units, tell me the following: First what are the mass units?

Troyanec [42]

Answer:

<em> The mas unit is the the 'Kilogram' written as 'kg'</em>

<em>Volume is 10 L</em>

Explanation:

The complete question is

If you have a density of 100 kg/L, and a mass of 1000 units, tell me the following: First, what are the mass units?

Second, what is the volume

mass units is the 'Kilogram', written as 'kg'

density = mass/volume = 100 kg/L

the mass = 1000 kg

volume = mass/density = 1000/100 =<em> 10 L</em>

7 0

3 years ago

if you stand on one side of a strike-slip fault and the block on the other side of the fault has moved to your left, this is kno

katrin [286]

If you stand on one side of a strike-slip fault and the block on the other side of the fault has moved to your left, this is known as a(n) left lateral fault.

There are several distinct sorts of fault lines, and they are called based on the fault's movement and the fault plane's own direction. These faults may be found all over the world, but the most active and earthquake-producing ones are in the Pacific Ocean's Ring of Fire region.

When you gaze along the length of a fault line, the left side will move toward you while the right side moves away from you. This is referred to as a left-lateral fault.

To know more about left lateral fault visit : brainly.com/question/14136640

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3 0

1 year ago