3 years ago

Which of the following is the best thermal conductor?

Physics

1 answer:

wel3 years ago

7 0

Answer:

steel because being alloy in metal it has free electrons in metals

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What's the symbol for an ionized gallium atom?

babunello [35]

Hi there!

Gallium is chemical element 31, (meaning 31 protons, 31 electrons).

The symbol for Gallium is "Ga"

Hope this helps you!

~DoctorLex

6 0

3 years ago

German physicist Werner Heisenberg related the uncertainty of an object's position (Δx) to the uncertainty in its velocity (Δ???

fredd [130]

Answer:

$\Delta x = 5.47 \times 10^{-9} m$

Explanation:

As we know by the principle of uncertainty that the product of uncertainty in position and uncertainty in momentum is given as

$\Delta x \times \Delta P = \frac{h}{4\pi}$

so here we know that

$\Delta v = 0.01 \times 10^6 m/s$

$m = 9.11 \times 10^{-31} kg$

so we have

$\Delta x \times (9.11 \times 10^{-31})(0.01 \times 10^6) = \frac{6.26 \times 10^{-34}}{4\pi}$

$\Delta x = 5.47 \times 10^{-9} m$

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3 years ago

What scientisists stated that animals, as well as plants, are made of cells.?

Andrews [41]

The answer is Mathias Schleiden and Theodor Schwann

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3 years ago

Helium-4 has how many protons

Natalka [10]

Answer: Helium has 2 protons.

4 0

4 years ago

If a sled has a mass of 4kg what is the force of gravity on the sled?

ale4655 [162]

Answer:

Explanation:

Gravity pulls everything down at the same rate of 9.8 m/s/s. If you're looking for the normal force, which is the same as the weight of the object, we'll find that, just in case.

w = mg which says that the normal force/weight of an object is equal to its mass times the pull of gravity:

w = 4.0(9.8) so

w = 39N

7 0

3 years ago