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3 years ago

Anino acids are important to the body because they build

Physics

2 answers:

tino4ka555 [31]3 years ago

6 0

Answer:

Amino acids and proteins are the building blocks of life. When proteins are digested or broken down, amino acids are left. The human body uses amino acids to make proteins to help the body: Break down food.

Marta_Voda [28]3 years ago

3 0

Amino acids build proteins!

You might be interested in

Changes in energy causes matter to change phase. true or false

cupoosta [38]

it's true because we'll engery and causes of matter work together I think

8 0

3 years ago

In a compressional wave the denser the medium is at the compressions the smaller is amplitude?

svlad2 [7]

Wellll, let me think about that ...

I don't think I'd agree that you can characterize the amplitude of
a wave according to the density at only one point in it. After all ...
a tiny wave in steel would be much denser at a compression than
a huge wave in air would be.

The amplitude of any wave is described as the difference between
a peak and the resting value. Or even better ... half of the difference
between a maximum and a minimum.

So if you're looking at a longitudinal wave, like sound, I'd say if you
want to describe its amplitude, then you have to look at the density
at two points ... either the difference between the compression and
the resting densities, or the difference between the greatest compression
and the greatest rarefaction.

That's my opinion. I could be wrong.

5 0

3 years ago

A rock is dropped from the top of a vertical cliff and takes 3.00 s to reach the ground below the cliff. A second rock is thrown

Trava [24]

Answer:

D) 12.3 m/s downward

Explanation:

We use the next free fall equation

$h=v_{0}t+\frac{1}{2}gt^2$

where $h$ is the height of the cliff, $v_{0}$ the initial velocity, $g$ the acceleration of gravity ( $g=9.81m/s^2$ ) and $t$ is time.

For the fist rock $v_{0}=0$ since the rock was dropped, and $t=3s$ , so we have:

$h=(0m/s)(3s)+\frac{1}{2}(9.81m/s^2)(3s)^2$

simplifying

$h=44.145m$

the height of the cliff is 44.145m

Now, about the second rock we know that is the same height and now the time es $t=2s$ , and we need to find $v_{0}$

From the fist equation

$h=v_{0}t+\frac{1}{2}gt^2$

we clear for $v_{0}$

$v_{0}t=h-\frac{1}{2} gt^2\\v_{0}=\frac{h}{t} -\frac{1}{2} gt$

and substitute known values

$v_{0}=\frac{44.145m}{2s} -\frac{1}{2} (9.81m/s^2)(2s)$

$v_{0}=22.07m/s -9.81m/s$

$v_{0}=12.26m/s$ wich rounds up to $v_{0}=12.3m/s$

the direction is downward because the rock is thrown so that it falls through the cliff.

7 0

3 years ago

3. Sodium-24 has a half-life of 15 hours. If a sample of sodium-24 has an

sattari [20]

Answer:

See explanation

Explanation:

From the formula;

0.693/t1/2 = 2.303/t log (Ao/A)

t1/2 = half life of Sodium-24

Ao = initial activity of Sodium-24

A= activity of Sodium-24 at time = t

So,

0.693/15 = 2.303/15 log (800/A)

0.0462 = 0.1535 log (800/A)

0.0462/0.1535 = log (800/A)

0.3 = log (800/A)

Antilog(0.3) = (800/A)

1.995 = (800/A)

A = 800/1.995

A = 401 Bq

ii) 0.693/15 = 2.303/30 log (800/A)

0.0462 = 0.0768 log (800/A)

0.0462/0.0768 = log (800/A)

0.6 = log (800/A)

Antilog (0.6) = (800/A)

3.98 = (800/A)

A = 800/3.98

A = 201 Bq

iii)

0.693/15 = 2.303/45 log (800/A)

0.0462 = 0.0512 log (800/A)

0.0462/0.0512 = log (800/A)

0.9 = log (800/A)

Antilog (0.9) = (800/A)

7.94 = (800/A)

A = 800/7.94

A= 100.8 Bq

iv)

0.693/15 = 2.303/60 log (800/A)

0.0462 = 0.038 log (800/A)

0.0462/0.038 = log (800/A)

1.216 = log (800/A)

Antilog(1.216) = (800/A)

16.44 = (800/A)

A = 800/16.44

A = 48.66 Bq

3 0

3 years ago

A 10.1 g bullet leaves the muzzle of a rifle with a speed of 558.4 m/s. what constant force is exerted on the bullet while it is

artcher [175]

To answer any question to do with mass, acceleration, velocity (etc...) you use one or more of this set of equations. They are called the 'Kinematic' equations and are really easy to re-arrange, when you need to find the 'unknown quantity' that the question is asking for. Below these equations i will show you the general problem solving strategy to very quickly and easily solve these problems.

The Kinematic Equations

$D = (v_{i} * t) + (0.5 * a * t^2)$
$v_{f} ^2 = v_{i}^2 + (2 * a * D)$
$v_{f} = v_{i} + (a*t)$
$D = (\frac{v_{i} + v_{f}}{2} ) * t$

The Method

1. Write down all the known variables and their values + the one you don't know with a question mark next to it. (v = ?)

2. Find the kinematic equation where you have ALL the variables except the one you are missing.

3. Re-arrange the equation to solve for the missing variable.

Done!

HINT: Sometimes you need to use two kinematic equations, one after the other, in order to get the answer. It is common for questions to not give two variables, like velocity AND acceleration to force you to solve for one, then use that solution in another kinematic equation to finally solve the problem. Writing down the known variables is the fastest way to see what you have and what you need.
____________________________________________

This question takes things one step further and is asking you to find the FORCE on the bullet. To convert to a force in any situation you need to find the acceleration and multiply it by the mass as follows:

$F = m * a$

Remember this equation!! you will use it ALL the time.

Please let me know if you still cannot solve this problem, but i believe you should be fine :)

6 0

4 years ago