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2 years ago

The resistance of the light bulb changed as the voltage (and current) changed. Why does this resistance change occur?

1 answer:

8 0

This resistance current is directly proportional to voltage and inversely proportional to resistance. In other words, as the voltage increases, so does the current. Hope this helps !!

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The mass of a proton is approximately equal to

Dahasolnce [82]

Answer:

$1.6726\cdot 10^{-27} kg$

Explanation:

The three main particles that make an atom are:

- Proton: its mass is $1.6726\cdot 10^{-27} kg$ , it carries an electric charge of +e ( $e=1.6\cdot 10^{-19}C$ ), and it is located in the nucles of the atom

- Neutron: its mass is $1.6749 \cdot 10^{-27}kg$ , it carries no electric charge, and it is also located in the nucleus of the atom

- Electron: its mass is $9.1094 \cdot 10^{-31}kg$ , it carries an electric charge of -e ( $e=1.6\cdot 10^{-19}C$ ), and it is located outside the nucleus

3 0

2 years ago

Electromagnetic radiation behaves both as particles (called photons) and as waves. Wavelength (λ) and frequency (ν) are related

inessss [21]

<h2>Answer: 136.363 m</h2>

Explanation:

We can find the wavelength of the radiation produced by the microwave oven by using the following given equation:

$c=\lambda.\nu$ (1)

Clearing $\lambda$ :

$\lambda=\frac{c}{\nu}$ (2)

Knowing $\nu=2.20 GHz=2.20(10)^{6}Hz=2.20(10)^{6}s^{-1}$

$\lambda=\frac{3(10)^{8}m/s}{2.20(10)^{6}s^{-1}}$ (3)

$\lambda=136.363m$ This is the wavelength of the radiation produced by the microwave

8 0

3 years ago

C. If you knew the pressure, volume, and temperature of the air in the

densk [106]

Answer:

Explanation:

First, let's review the ideal gas law, PV = nRT. In this equation, 'P' is the pressure in atmospheres, 'V' is the volume in liters, 'n' is the number of particles in moles, 'T' is the temperature in Kelvin and 'R' is the ideal gas constant (0.0821 liter atmospheres per moles Kelvin).

5 0

2 years ago

An airplane travels 2800 km at a speed of 700 km/h, decreases its speed to 500 km/h for the next 1500 km and travels the last 10

Dafna11 [192]

Answer:

he average speed for the airplane is 558 km/hr

Explanati

6 0

2 years ago

When a boat moves through the water, the waves in front of the boat bunch up, while the waves behind the boat spread out. this i

liberstina [14]

Answer: Doppler Effect

Doppler Effect can be described as the change in wavelength of a wave like upward shift in frequency for an object whom is approaching and an apparent downward shift in frequency for observers from whom the source is receding. This effect can be observed when a boat moves through the water then the waves in front bunch up while the waves behind the boat spread out.

8 0

3 years ago