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2 years ago

Question 1 of 10

Physics

1 answer:

Dahasolnce [82]2 years ago

3 0

Answer:

They have the same rate of motion.

Explanation:

Electromagnetic radiation is a type of energy that is commonly known as light. Generally, light travels in waves, and all electromagnetic radiation travels at the same speed, which is about 3.0 × 108 ms− 1 through a vacuum.

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Which element contains a full 2p orbital in its valence shell

alex41 [277]

So Neon ( Ne) is the correct answer.

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3 years ago

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A locomotive engine pulls a train with a constant force comment on whether its acceleration will increase or decrease if more co

julia-pushkina [17]

Explanation:

the acceleration will be unchanged according to newton second law of motion

7 0

3 years ago

How does the digestive system interact with the following organ systems (circulatory, muscular and nervous system) to maintain h

Lemur [1.5K]

Answer:

The circulatory system breaks down food and gets / absorbs nutrients. The muscular system works to get nutrients to the rest of the body. The nervous system basically controls the digestive system and sends information to the brain.

I'm pretty sure I'm right, but please correct me if I'm wrong! :)

5 0

3 years ago

Fine grains of beach sand are assumed to be spheres of radius 49.8 µm. these grains are made of silicon dioxide which has a dens

PIT_PIT [208]

Answer: $1.3\times10^{-9}kg$

Volume of each grain of sand:

$V=\frac{4}{3}\pi r^3$

radius of the spherical grain is given, $r=49.8\mu m=49.8\times10^{-6} m$

$\Rightarrow V=\frac{4}{3}\times3.14\times(49.8\times10^{-6})^3m^3=5.17\times10^{-13}m^3$

The grains are made up of silicon dioxide.

The density is equal to $D=2600 kg/m^3$

Then, the mass of each grain is given by:

$Mass=Density (D)\times Volume(V)\\ \Rightarrow M=2600 kg/m^3\times5.17\times10^{-13}m^3 =1.3\times10^{-9}kg$

6 0

3 years ago

The average human has a density of 945 kg/m3 after inhalation, and 1020 kg/m3 after exhalation. Fresh water has a density of 100

Montano1993 [528]

Answer:

a. The human body has nearly the same density as salt water after exhaling.

b. The human body will always float in the Dead Sea.

Explanation:

According to the concept of floating on the basis of density, any body that is put in a fluid of density greater than its own density will always float due to the force of buoyancy from the liquid.

The portion of the object submerged while the object is floating depends upon the density of the object as compared to the density of the fluid. This is governed by the equation:

$\rho_f.V_s=\rho_o.V_o$

where:

$\rho_f=$ density of the fluid

$\rho_o=$ density of the object

$V_s=$ volume of the object submerged in the fluid

$V_o=$ total volume of the object

6 0

4 years ago