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Schach [20]
3 years ago
15

Light travels fastest when moving through

Physics
1 answer:
vitfil [10]3 years ago
4 0
A vaccum unlike sound,light can travel through any matter including a great vacuum of nothing (space) 
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The terrestrial planets and the giant planets have different compositions because
kramer

Answer:

The terrestrial planets are closer to the sun.

Explanation:

7 0
3 years ago
A proton and a deuteron are moving with equal velocities perpendicular to a uniform magnetic field. A deuteron has the same char
Yuri [45]

Answer:

The ratio of the acceleration of the proton to that of the deuteron is 2

Explanation:

For a moving charge in magnetic field, the magnetic force is balanced by force due to its motion. So,

qvB=ma

Acceleration of proton,

a_p=\dfrac{qvB}{m_p}  .........(1)

Acceleration of deuteron,

a_d=\dfrac{qvB}{m_d}   ..........(2)

Since, a deuteron has the same charge as the proton but has twice its mass.

Dividing equation (1) and (2) we get :

\dfrac{a_p}{a_d}=\dfrac{m_d}{m_p}

m_d=2m_p

\dfrac{a_p}{a_d}=\dfrac{2m_p}{m_p}\\\\\dfrac{a_p}{a_d}=2

So, the ratio of the acceleration of the proton to that of the deuteron is 2. Hence, the correct option is (a).

4 0
3 years ago
What color is reflected off of most plant leaves?
serg [7]
Green is reflected off of most plant leaves.
3 0
3 years ago
Read 2 more answers
Three blocks are arranged in a stack on a frictionless horizontal surface. The bottom block has a mass of 37.0 kg. A block of ma
Alex777 [14]

Answer:

N₂ = 503.8 N

Explanation:

given,

mass of bottom block = 37 Kg

mass of middle block = 18 Kg

mass of the top block = 16 Kg

force acting on the top block = 170 N

force on the block at top

N₁ be the normal force from block at middle

now,

N₁ = 170 + m g

N₁ = 170 + 16 x 9.8

now, force on block at middle

N₂ be the normal force exerted by the bottom block

N₂ = N₁ + m₂ g

N₂ = 326.8 + 18 x 9.8

N₂ = 503.8 N

hence, normal force by bottom block is equal to N₂ = 503.8 N

7 0
4 years ago
What are some of the phenotypic plant traits that scientists are investigating? Why do you think these traits were chosen?
vodomira [7]

The term phenotype in a more specific context to describe the collective expression of the genotype in conjunction with the environment on a plant's observable characteristics.

<u>Explanation</u>:

  • Phenotype, any of the measurable features of an organism arising from its genotype association (total genetic inheritance) with the environment. Behaviour, biochemical properties, colour, form, and scale are examples of measurable characteristics.
  • An allele is another type of one gene. A phenotype triggered by the expression of a gene or group of genes is the external manifestation of a human trait.
  • A trait is an attribute unique to an organism. The genotype's external expression is called the phénotype.

8 0
3 years ago
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