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3 years ago

Why are some mystery elements easier to identify than other?

Physics

2 answers:

Annette [7]3 years ago

8 0

"Some elements give distinctive colors to their salts, so you can usually identify them just by looking."

dezoksy [38]3 years ago

3 0

Bc it depends on the elements some are easier and some are not

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Scientific work is currently underway to determine whether weak oscillating magnetic fields can affect human health. For example

nlexa [21]

Answer:

The maximum emf that can be generated around the perimeter of a cell in this field is $1.5732*10^{-11}V$

Explanation:

To solve this problem it is necessary to apply the concepts on maximum electromotive force.

For definition we know that

$\epsilon_{max} = NBA\omega$

Where,

N= Number of turns of the coil

B = Magnetic field

$\omega =$ Angular velocity

A = Cross-sectional Area

Angular velocity according kinematics equations is:

$\omega = 2\pi f$

$\omega = 2\pi*61.5$

$\omega =123\pi rad/s$

Replacing at the equation our values given we have that

$\epsilon_{max} = NBA\omega$

$\epsilon_{max} = NB(\pi (\frac{d}{2})^2)\omega$

$\epsilon_{max} = (1)(1*10^{-3})(\pi (\frac{7.2*10^{-6}}{2})^2)(123\pi)$

$\epsilon_{max} = 1.5732*10^{-11}V$

Therefore the maximum emf that can be generated around the perimeter of a cell in this field is $1.5732*10^{-11}V$

6 0

4 years ago

What is the main function of the excretory system?

tiny-mole [99]

Answer: To collect and remove wastes from the body.

Explanation:

The excretory system helps to collect and remove wastes from the body in the form of urine.

6 0

4 years ago

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A pencil has a density of 0.875g/ml. It has a mass of 3.50 g. What is the volume

erica [24]

Answer:

V = 4 cm^3

Explanation:

Divide the mass by the density.

3.50g/0.875g/mL = 4cm^3

7 0

3 years ago

Five things that were invented by tesla? please answer!!!!

algol13

Answer:

remote control, neon and fluorescent lights, wireless transmission, computers, smartphones

Explanation:

6 0

3 years ago

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Objects in motion eventually stop moving due to a _____ .can someone help me with this question

Tom [10]

External force.

Air resistance, friction, grass rubbing on a rolling ball, etc.

If there is no external force on a moving object, it keeps going.

Forever !

8 0

4 years ago