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larisa86 [58]
3 years ago
7

HELP NEEDED

Physics
1 answer:
MrMuchimi3 years ago
8 0

Answer:

D the development of an ozone layer

Explanation:

the rest don't relate to the atmosphere

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A 20×10⁹charge is moved between two points A andB that are 30mm apart and have an electric potential difference of 600v between
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Answer:

John Felix Anthony Cena is an American professional wrestler, actor, and television presenter. He is currently signed to WWE. Born and raised in West Newbury, Massachusetts, Cena moved to California in 1998 to pursue a career as a bodybuilder.

Explanation:

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2 years ago
Scientific work is currently underway to determine whether weak oscillating magnetic fields can affect human health. For example
ValentinkaMS [17]

Answer:

2.02672\times 10^{-11}\ V

Explanation:

f = Frequency = 75 Hz

B = Magnetic field = 1\times 10^{-3}\ T

d = Diameter of cell = 7.4\ \mu m

t = Time taken

\omega = Angular frequency

The expression of emf is

E=NAB\omega sin\omega t

Emf is maximum when sin\omega t=1 and N = number of turns = 1

E_m=AB\omega\\\Rightarrow E_m=\pi \left(\frac{d}{2}\right)^2 \times B \times 2\pi\times f\\\Rightarrow E_m=\pi \left(\frac{7.4\times 10^{-6}}{2}\right)^2\times 1\times 10^{-3}\times 2\pi\times 75\\\Rightarrow E_m=2.02672\times 10^{-11}\ V

The maximum emf that can be generated around the perimeter of a cell in this field is 2.02672\times 10^{-11}\ V

4 0
3 years ago
How many watt-hours does a 80 watt light bulb use if it runs for 3.5 hours?
coldgirl [10]

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5 I Think

Explanation:

3 0
3 years ago
Explain what kinesthesis is, why it is important, and how it is applied to multiple disciplines.
Natalija [7]
Search what does kinethesis mean.
7 1
3 years ago
Read 2 more answers
Danny and Iskander sit on a see-saw. Iskander weighs 40 N and sits 1.2 meters from the pivot. Danny sits 0.8 m from the pivot an
Katena32 [7]

Answer:

60N

Explanation:

According to the principle of lever: a torque can control if an object will spin or not.

The torque Iskander cause is 40*1.2=48 N-m

So for balanced, Danny should cause the same torque.

48/0.8=60, Danny weigh 60N.

7 0
2 years ago
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