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4 years ago

5

What makes plants the beginning of the food chain

2 answers:

hodyreva [135]4 years ago

5 0

Plants produce food for themselves so they begin the food chain

dalvyx [7]4 years ago

4 0

<em>A food chain shows how each living thing gets its food. ... Plants are called producers because they are able to use light energy from the sun to produce food (sugar) from carbon dioxide and water. Animals cannot make their own food so they must eat plants and/or other animals. They are called consumers.</em>

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Mr. Mann explained that when light passes from air into the water, the light waves bend, or ___________, and the pencil appears

posledela

Answer:

the light waves bend or REFRACT

Explanation:

4 0

3 years ago

The index of refraction for red light in water is 1.331 and that for blue light is 1.340. If a ray of white light enters the wat

kobusy [5.1K]

Answer:

Angle of refraction for red light is $43.01^{\circ}$

Angle of refraction for blue light is $42.68^{\circ}$

Explanation:

It is given refractive index for red light is $\mu _{red}=1.331$

Refractive index of blue light $\mu _{blue}=1.340$

Angle of incidence $i=65.30^{\circ}$

According to law of refraction $\mu =\frac{sini}{sinr}$

For red light $1.331 =\frac{sin65.30^{\circ}}{sinr}$

$1.331 =\frac{0.908}{sinr}$

$sinr=0.682$

$r=43.01^{\circ}$

Therefore angle of refraction for red light is $43.01^{\circ}$

Similarly for blue light $1.340 =\frac{sin65.30^{\circ}}{sinr}$

$1.340 =\frac{0.908}{sinr}$

$sinr=0.677$

r = $42.68^{\circ}$

Therefore angle of refraction for blue light is $42.68^{\circ}$

6 0

3 years ago

Why do we charge a capacitor under a DC voltage source only?

Anit [1.1K]

Because there is always risk of death

7 0

3 years ago

Read 2 more answers

Four identical 2.5 mF capacitors are connected together electrically. What is the greatest possible capacitance of the combinati

MrRa [10]

When capacitors are in PARALLEL, they add up. (like resistors in series)

If you connect these four capacitors in parallel, the combination behaves like a single capacitor of (4 x 2.5) = 10 mF.

That's the greatest capacitance you can make with these four pieces.

7 0

3 years ago

A cylindrical solid has a diameter of 1.62cm and a height of 5.04 cm. If the mass of the object is 50.12 g, what is the density

zimovet [89]

Density of cylinder is 4.82 g/cm³.

<h3>What is density of a substance?</h3>

Density is the ratio of the mass and the volume of a substance

Density = mass/volume

The density of the cylinder is:

mass of cylinder = 50.12 g

volume of cylinder = πr²h

r = 1.62/2 = 0.81 cm

h = 5.04 cm

volume of cylinder = 22/7 * 0.81² * 5.04

volume of cylinder = 10.39 cm³

Density of cylinder = 50.12 g/10.39 mL

Density of cylinder = 4.82 g/cm³

In conclusion, density of a substance is the ratio of mass and volume of the substance.

Learn more about density at: brainly.com/question/1354972

#SPJ1

4 0

2 years ago