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3 years ago

Consider matrices in R 3×5 . What is the maximum possible number of linearly independent column vectors?

Physics

1 answer:

raketka [301]3 years ago

5 0

Answer:

if a matrix 3 x 5 it does not imply that the column vector are linearly independent.

Explanation:

A 3 x 5 matrix represents a linear map $R^5 to R^3$ . we have 5 columns vectors of $R^3$ . they can never be linearly independent because the dimension of $R^3$ is 3.

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White light is an _____ mixture of all the colors.

Luba_88 [7]

Answer:

White light is a combination of all colors in the color spectrum.

Explanation:

It has all the colors of the rainbow. Combining primary colors of light like red, blue, and green creates secondary colors: yellow, cyan, and magenta

6 0

3 years ago

A marble on a frictionless track, starting from point A in the drawing, is projected down the curved runway. (This means that th

EleoNora [17]

Answer:

v = 4.4 m / s

Explanation:

Unfortunately, the exercise scheme does not appear. Let's analyze the problem the marble leaves point A with an initial velocity, goes down and then rises to a given height where its velocity is zero, in the whole trajectory they tell us that the resistance is zero, so we can use the conservation relations of the enegy.

Starting point. Point A

Em₀ = K + U = ½ m v2 + mg y_a

point B.

Em_f = U = m g y

the energy is conserved

Em₀ = Em_f

½ m v² + mg y_a = m g y

½ m v² = m g (y -y_a)

v = $\sqrt {2g ( y - y_a)}$

In the exercise the diagram is not seen, but the height of point A must be known, suppose that y_a = 4 m

v = $\sqrt{ 2 \ 9.8 ( 5 -4)}$

v = 4.4 m / s

4 0

3 years ago

Identify the arrows that show input force

satela [25.4K]

The answer is that the reverse arrows pointing to the left needs to release energy. The molecules in the gas state are free such that they can travel from one point to another easily. They have the highest amount of energy. So, if you want the molecules to come closer together, you need to remove the energy to keep them in place. Therefore, the arrows pointing to the right require removal of energy.

8 0

3 years ago

Which stars has the coolest surface temperature?

Delicious77 [7]

Answer:

Red Dwarf

Explanation:

Red Dwarf have low temperature having range from 2500 K to 4000 K.
They are red in appearance due to their low temperature.
Proxima Centauri is a red Dwarf.
They have low luminosity.
They have small mass and have high density.

5 0

4 years ago

~ is the following statement true or false? Explain your answer.

USPshnik [31]

Answer: False

Explanation: The sun is one of earths primary energy sources. Without the sun, all animals, plants, humans would die. The sun's energy provides warmth for humans and plants and animals cannot grow without the sun.

7 0

3 years ago