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2 years ago

Can science answer every question

Physics

2 answers:

Alla [95]2 years ago

5 0

No because your opinion and beliefs answers many questions

Roman55 [17]2 years ago

3 0

No because everyone will have a different opinion or belief , which will make every problem in science different

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Suppose a certain type of deciduous tree releases 7500 leaves on average each fall. If the average mass of each leaf is 1.7 g an

timofeeve [1]

<u>Answer:</u>

Mass of leaves in scientific notation = $3.55*10^8kg$

<u>Explanation:</u>

Number of leaves released by type of deciduous tree = 7500 leaves on average each fall

Mass of 1 leaf = 1.7 grams = $1.7*10^{-3}kg$

Mass of 7500 leaves = $7500*1.7*10^{-3} = 12.75kg$

No trees per acre = 206

Area of forest = 135,000 acre.

Total no of trees in 135,000 acre = 135,000 * 206 = $2.781*10^7$ trees

Mass of leaves fallen in 135,000 acre = $12.75*2.781*10^7=3.55*10^8kg$

Mass of leaves in scientific notation = $3.55*10^8kg$

5 0

2 years ago

Plz help me.

Molodets [167]

Answer:

52 meters

Explanation:

The man runs a distance D meters at 4 m/s. The bear runs a distance D+26 meters at 6 m/s.

The time it takes the man to reach the vehicle is:

t = D / 4

The time it takes the bear to reach the vehicle is:

t = (D + 26) / 6

If they reach the vehicle at the same time:

D / 4 = (D + 26) / 6

6D = 4(D + 26)

6D = 4D + 104

2D = 104

D = 52

The man can return safely to his vehicle if D is less than 52 meters.

8 0

2 years ago

Read 2 more answers

1. What was the common belief (theory) about motion before the 1600's?

Rina8888 [55]

People then didn't really think about gravity, they simply accept the fact that it exists, without realising. View this from another angle. When a teacher explains something in the classroom, most of the time we simply accept it, without asking why. That right there, is acceptance. We simply accept it. Everyone would know that if they let go of something, it would drop. However, only Isaac Newton stopped to question why. Hope this helps :)

7 0

2 years ago

When going from an optically less dense medium to a more optically dense medium (such as air to water), how does the angle of in

zubka84 [21]

Answer and Explanation:

When light goes from an optically rarer medium to an optically more dense medium, the bending of light takes place towards the normal.

In case, the light travels from air, i.e., less dense to water, i.e., optically more dense, then in accordance to Snell's law, the medium with the lower refractive index will have the larger angle whereas the medium with higher refractive index will have smaller angle.

Also, as light travels from a an optically less dense to optically more dense medium, speed of light reduces and hence its wavelength while the frequency remains intact.

Converse is true when light travels from an optically more denser to optically less dense medium, the light bends away from the normal, like in case of water to air, where water is comparatively more dense

6 0

2 years ago

Each student aligns the edge of the object with the left edge of the ruler and records a length of 4.6 cm. Which statement descr

TEA [102]

If they align the object at the very edge of the ruler, the measurement in inaccurate. They would have to start the measurement at 0 to get an accurate measurement. When starting at the very edge, you are not taking into account the little bit of the ruler and it between the edge of the ruler and the 0 marker.
Some people start at the 1 cm mark (and then subtract 1 from their raw measurement) to make sure they have the most accurate measurement they can get.
I'm pretty sure that is what you are talking about. Hope this helps!!

3 0

2 years ago