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4 years ago

What are the activities involved in scientific method?

1 answer:

6 0

Ask a Question Do Background Research Construct a Hypothesis Test Your Hypothesis by Doing an Experiment Analyze Your Dat…a and Draw a Conclusion Communicate Your Results
.

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Convection is a means of heat transfer that involves fluids, such as liquids or gasses. The process of convection is responsible

Grace [21]

Answer:

Correct answer is B.

Explanation:

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3 years ago

Read 2 more answers

A boy is looking into a plane mirror .His nose is 30 cm in front of the mirror .How far is his nose from where its image appears

natima [27]

Answer:

60cm

Explanation:

30+30=60

8 0

3 years ago

Calculate the energy of a photon having a wavelength in thefollowing ranges.(a) microwave, with λ = 50.00 cmeV(b) visible, with

IgorLugansk [536]

(a) $2.5\cdot 10^{-6}eV$

The energy of a photon is given by:

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

where

$h=6.63\cdot 10^{-34}Js$ is the Planck constant

$c=3\cdot 10^8 m/s$ is the speed of light

$\lambda$ is the wavelength

For the microwave photon,

$\lambda=50.00 cm = 0.50 m$

So the energy is

$E=\frac{(6.63\cdot 10^{-34}Js)(3\cdot 10^8 m/s)}{0.50 m}=4.0\cdot 10^{-25} J$

And converting into electronvolts,

$E=\frac{4.0\cdot 10^{-25}J}{1.6\cdot 10^{-19} J/eV}=2.5\cdot 10^{-6}eV$

(b) $2.5 eV$

For the energy of the photon, we can use the same formula:

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

For the visible light photon,

$\lambda=500 nm = 5 \cdot 10^{-7}m$

So the energy is

$E=\frac{(6.63\cdot 10^{-34}Js)(3\cdot 10^8 m/s)}{5\cdot 10^{-7} m}=4.0\cdot 10^{-19} J$

And converting into electronvolts,

$E=\frac{4.0\cdot 10^{-19}J}{1.6\cdot 10^{-19} J/eV}=2.5 eV$

(c) $2500 eV$

For the energy of the photon, we can use the same formula:

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

For the x-ray photon,

$\lambda=0.5 nm = 5 \cdot 10^{-10}m$

So the energy is

$E=\frac{(6.63\cdot 10^{-34}Js)(3\cdot 10^8 m/s)}{5\cdot 10^{-10} m}=4.0\cdot 10^{-16} J$

And converting into electronvolts,

$E=\frac{4.0\cdot 10^{-16}J}{1.6\cdot 10^{-19} J/eV}=2500 eV$

6 0

3 years ago

Can someone list 6 advantages of renewable energy.

igor_vitrenko [27]

Answer:

Solar energy, Wind energy, Hydro energy, Tidal energy, Geothermal energy, Biomass Energy.

Explanation:

I hope that it helps you...

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3 years ago

Why is it hard to start a diesel in cold weather?

DiKsa [7]

Because during cold weather the oil thickens which make it harder for the staner motor to spin the engine.hope this helps :D

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3 years ago