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LenaWriter [7]
3 years ago
7

The cryosphere is composed of?

Physics
1 answer:
Alla [95]3 years ago
8 0
The cryosphere is composed of all the frozen water on Earth.
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A scientist measuring the resistivity of a new metal alloy left her ammeter in another lab, but she does have a magnetic field p
nalin [4]

Answer:

3.49\times 10^{-8}\ \Omega\text{m}

Explanation:

r = Radius = \dfrac{2}{2}=1\ \text{mm}

B = Magnetic field = 3 mT

1 mm = Distance from the surface of the wire

V = Voltage

x = Distance from the probe = r+1=1+1=2\ \text{mm}

R = Resistance

L = Length of wire = 4.5 m

Magnetic field is given by

B=\dfrac{\mu_0I}{2\pi x}\\\Rightarrow I=\dfrac{B2\pi x}{\mu_0}\\\Rightarrow I=\dfrac{3\times 10^{-3}\times 2\times \pi 2\times 10^{-3}}{4\pi 10^{-7}}\\\Rightarrow I=30\ \text{A}

Voltage is given by

V=IR\\\Rightarrow R=\dfrac{V}{I}\\\Rightarrow R=\dfrac{1.5}{30}\\\Rightarrow R=0.05\ \Omega

Resistivity is given by

\rho=\dfrac{RA}{L}\\\Rightarrow \rho=\dfrac{0.05\times \pi (1\times 10^{-3})^2}{4.5}\\\Rightarrow \rho=3.49\times 10^{-8}\ \Omega\text{m}

The resistivity of the material is 3.49\times 10^{-8}\ \Omega\text{m}.

4 0
3 years ago
5 uses of satellite​
Alex73 [517]

Answer:

uses of satellites:

  1. Scientific Investigation
  2. Earth observation - including weather forecasting and tracking storms and pollution
  3. Communications - including satellite television and telephone calls
  4. Navigation - including the Global Positioning System (GPS)
  5. Military - including reconnaissance photography and communications (nuclear weapons are not allowed in space)
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3 years ago
Which environmental changes occur faster?
irga5000 [103]
The answer is B. Oil Spill
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Earthquake information would most likely be shown on which type of map?
zmey [24]

Information about Earthquakes would normally be shown on a map called "geologic hazards"

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A liquid thermometer can be used to test for fevers. When body temperature increases, the liquid inside the thermometer expands
kompoz [17]

Answer:

A

Explanation:

dafdfsfsf

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