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3 years ago

Why might skin not be able to produce enough vitamin d

Physics

1 answer:

avanturin [10]3 years ago

7 0

If it is not exposed to sunlight often... then it might not be able to produce sufficient amounts

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The drawing shows a model for the motion of the human forearm in throwing a dart. Because of the force M applied by the triceps

Serga [27]

Answer:

464.3 N

Explanation:

Given parameters are:

I = 0.065 $kg*m^2$

L = 0.025 m

R = 0.28 m

$v_0$ = 0 m/s

$v_f$ = 5 m/s

t = 0.1 s

$v_f=v_0+at=at$

Hence, $a=v_f/t$

We must connect two torque equations to find the answer.

$\tau=LM=I\alpha$

Where $\alpha =\frac{a}{R} =\frac{v_f}{Rt}$

Hence, $LM=I\frac{v_f}{Rt}$

Thus, $M = \frac{Iv_f}{LRt} = \frac{0.065*5}{0.025*0.28*0.1} =464.3$ N

5 0

4 years ago

Why is it not advisable to sterilize clinical thermometer with boiling water

amm1812

It will break. A clinical the emoter is designed to measure relatively small changes in temperature. The substance inside a clinical thermoset will expand or evaporate at boiling temperatures and break.

6 0

3 years ago

The Kelvin scale is also know as the absolute zero<br> TRUE OR FALSE

Bond [772]

The Kelvin scale is also called absolute zero scale

Explanation:

true

6 0

3 years ago

The index of refraction of silicate flint glass for red light is 1.620 and for violet light is 1.660 . A beam of white light in

Alinara [238K]

Answer:

The angular separation between the red and violet components of the spectrum that emerges from the glass is 1.72°

Explanation:

Given:

Refractive index for red light $n _{1} = 1.620$

Refractive index for violet $n' _{1} = 1.660$

Refractive index for air $n_{2} = 1$

Incident angle $\theta _{1} =$ 28.30°

According to the snell's law,

$n_{1} \sin \theta _{1} = n_{2} \sin \theta _{2}$

For red light,

$1.620 \times \sin 28.30 = 1 \sin \theta _{2}$

Where $\theta _{2} =$ transmitted angle for red light

$\theta _{2} =$ 50.18°

For violet light,

$1.660 \times \sin 28.30 = 1 \sin \theta' _{2}$

Where $\theta' _{2} =$ transmitted angle for violet light

$\theta' _{2} =$ 51.9°

Angular separation between red and violet light is given by,

$\theta ' _{2} - \theta _{2} = 51.9 -50.18 =$ 1.72°

Therefore, the angular separation between the red and violet components of the spectrum that emerges from the glass is 1.72°

6 0

3 years ago

I have a question that's confusing, Will a large can of solids or empty can reach end of the ramp faster first in a can race? Al

I am Lyosha [343]

The large can of solids will reach before the empty can reason being is it has more additional weight its like dropping a 1 pound weight compared to a 4 pound the 4 pound reaches faster because of the gravitational pull the size of the pull depends on the masses of the objects

4 0

3 years ago