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mariarad [96]
3 years ago
11

Which statement correctly describes momentum? It is a scalar quantity because it involves magnitude only. It is a scalar quantit

y because it involves magnitude and direction. It is a vector quantity because it involves magnitude and direction. It is a vector quantity because it involves magnitude only.
Physics
1 answer:
Llana [10]3 years ago
4 0
<span>It is a vector quantity because it involves magnitude and direction.</span>
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An electric oven has a resistance of 201 ohms and a voltage of 220 V. How much current does it draw?
asambeis [7]

1.1 A. An electric oven with a resistance of 201Ω and a voltage of 220V drwa a current of 1.1 A.

The easiest way to solve this problem is using the Ohm's Law I = V/R.

An electric oven has R = 201Ω, and a drop of voltage V = 220v, solve using I = V/R:

I = 220V / 201Ω

I = 1.09 A ≅ 1.1 A

5 0
4 years ago
What is the twisted ladder shape of the DNA called?
klio [65]

Answer:

Double helix

Explanation:

The Double helix is a DNA molecule. The two strands around the Double Helix is called the twisted ladder.

6 0
3 years ago
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Which of the following does not describe a scientific theory?
frez [133]
Explains how and why nature does<span> what it </span>does<span>. ... A </span>scientific<span> law is a statement based on repeated experimental observations that ...

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4 0
3 years ago
The speed of an electromagnetic wave traveling in a transparent nonmagnetic substance is v = 1/ κμ0ε0 , where κ is the dielectri
vladimir1956 [14]

Answer:

v=2.24\times 10^{8}\ m/s

Explanation:

Given that,

The speed of an electromagnetic wave traveling in a transparent nonmagnetic substance is given by :

v=\dfrac{1}{\sqrt{k\mu_o\epsilon_o}}

Where

k is the dielectric constant of the substance.

v is the speed of light in water

c=\dfrac{1}{\sqrt{1.78\times 4\pi \times 10^{-7}\times 8.85\times 10^{-12}}}

v=2.24\times 10^{8}\ m/s

So, the speed of light in water is 2.24\times 10^{8}\ m/s

7 0
4 years ago
True or false: Ultimate tensile strength increases as the thickness of a solid material sample increases.
Varvara68 [4.7K]

Answer:

False.

Explanation:

Tensile strength should remain constant, regardless of thickness. For larger cross sections, it can slightly increase because the atoms in the center become more constricted and therefore less responsive to the applied stress.

7 0
3 years ago
Read 2 more answers
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