What flows in electricity? A. Electrons B. Protons C. Neutrons

May some one help a poor MHA fan out with science

guapka [62]

Answer:

nm

Explanation:

4 0

3 years ago

What is the formula for displacement

pogonyaev

Displacement is usually given to you as it is, but you can also get displacement through velocity by Δd= Δv*t, where Δv is the change in velocity and t is the change in time.

4 0

3 years ago

A 477 g portion of soup is heated in a microwave oven from 25°C to 90°C, using radiation with a wavelength of 1.55 × 10⁻² m. Ass

zheka24 [161]

To solve this problem we will use the heat transfer equations, to determine the amount of heat added to the body. Subsequently, through the energy ratio given by Plank, we will calculate the energy of each of the photons. The relationship between total energy and unit energy will allow us to determine the number of photons

The mass of water in the soup is 477g

The change in temperate is

$\Delta T = (90+273K)-(25+273K) = 65K$

Use the following equation to calculate the heat required to raise the temperature:

$q = mc\Delta T$

Here,

m = Mass

c = Specific Heat

$q = (477)(4.184)(65)$

$q = 129724.92J$

The wavelength of the ration used for heating is $1.55*10^{-2}m$

The number of photons required is the rate between the total energy and the energy of each proton, then

$\text{Number of photons} = \frac{\text{Total Energy}}{\text{Energy of one Photon}}$

This energy of the photon is given by the Planck's equation which say:

$E = \frac{hc}{\lambda}$

Here,

h = Plank's Constant

c = Velocity of light

$\lambda =$ Wavelength

Replacing,

$E = \frac{(6.626*10^{-34})(3*10^8)}{1.55*10^{-2}}$

$E = 1.28*10^{-23}J$

Now replacing we have,

$\text{Number of photons} = \frac{82240.7}{1.28*10^{-23}}$

$\text{Number of photons} = 6.41*10^{27}$

Therefore the number of photons required for heating is $6.41*10^{27}$

4 0

3 years ago

A train travels between two stations that are 63 km apart at an average speed of 35 m/s. How long after leaving the first statio

Semenov [28]

Distance / speed. So, 63/35. Answes is 1.8

4 0

3 years ago

Which statement correctly describes the current in a circuit that is made up of any two resistors connected in series with a bat

Aleksandr-060686 [28]

The answer is D. The current in the battery and in each resistor is the same.

If we have two or more components in series, the current that flows through each of them is the same.

In this case, the battery generates the current, and since there must be conservation of electric charge, no current can be lost through the resistors.

7 0

3 years ago