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4 years ago

Answer the following questions based on the

Physics

2 answers:

serious [3.7K]4 years ago

4 0

Post a photo of the article

Taya2010 [7]4 years ago

3 0

Answer:

Explanation:

As the other helper said, we need to read the article to help.

In general stem-cell research needs samples for experiment. The most commonly used ones are embryonic stem cells from embryos. People relate that source to abortion. So there are a lot of debates.

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Unlike fireflies and glow worms, most objects don't make their own light. So how can you see what's around you?

VashaNatasha [74]

Light reflects off the cornea in the back of your eye thats what makes you see light

5 0

4 years ago

A vehicle moving with a uniform acceleration of 2 m/s2 has

Dahasolnce [82]

Answer:

a) 6 m/s

b) 14 m/s

Explanation:

Acceleration is change in velocity over change in time.

a) a = Δv / Δt

2 m/s² = (v − 4 m/s) / 1 s

v = 6 m/s

b) a = Δv / Δt

2 m/s² = (v − 4 m/s) / 5 s

v = 14 m/s

6 0

3 years ago

A solar cell that transforms 300 J of light energy into 45 J of electrical energy and 255 J of wasted energy. whats the efficien

Setler [38]

Answer:

15%

Explanation:

Step one:

Given data

Energy source= 300J

Useful energy = 45J

Waste energy = 255J

Required

The efficiency of the solar system

Step two:

The efficiency is computed by factoring only the useful work and the energy source

Efficiency= 45/300*100

Efficiency= 0.15*100

Efficiency= 15%

3 0

3 years ago

A 200-foot tall monument is located in the distance. From a window in a building, a person determines that the angle of elevatio

egoroff_w [7]

Answer:

665 ft

Explanation:

Let d be the distance from the person to the monument. Note that d is perpendicular to the monument and would make 2 triangles with the monuments, 1 up and 1 down.

The side length of the up right-triangle knowing the other side is d and the angle of elevation is 13 degrees is

$dtan13^0 = 0.231d$