3 years ago

What must occur for a process to be a chemical reaction?

Physics

1 answer:

Evgen [1.6K]3 years ago

8 0

The answer is d !!!!!!

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The potential energy of an object attached to a spring whose elastic constant is k is given by the formula p e space equals spac

Mademuasel [1]

You know the following:
k= 25N/m
x=1.5m
Now you just plug these numbers into the formula which is
Epe = 1/2kx²
= 1/2(25N/m)(1.5m)²
= 28.125J or in proper sigdigs 28J
Hope this helps!

5 0

4 years ago

An open organ pipe is 2.46 m long, and the speed of the air in the pipe is 345 m/s.

lukranit [14]

Answer:

Fundamental frequency is 70.12 m

Explanation:

For an open organ pipe, the fundamental frequency is given by :

$f=\dfrac{nv}{2l}$

n = 1 for fundamental frequency

v is speed of sound in air, v = 345 m/s

l is length of open organ pipe, l = 2.46 m

Substituting values in above formula. So,

$f=\dfrac{1\times 345}{2\times 2.46}\\\\f=70.12\ Hz$

So, the fundamental frequency of this pipe is 70.12 m.

6 0

3 years ago

Part A What is the function of the nuclear pore complex found in eukaryotes? What is the function of the nuclear pore complex fo

34kurt

Answer:

It regulates the movement of proteins and RNAs into and out of the nucleus

Explanation:

The nuclear pore complex are protein channels connecting the outer membrane of the nucleus to the inner membrane of the nucleus. They securely regulates the almost all of the transport of protein and RNAs into and out of the nucleus.

8 0

3 years ago

is the change in potential energy the same when you slide an object up an incline or when you lift it upwards?

chubhunter [2.5K]

When you lift it upwards

3 0

3 years ago

A balloon holds 20.0 liters of helium at 10.0°C. If the temperature increases to 50.0°C, and the pressure does

ExtremeBDS [4]

Volum at the beginning: $V_{1}=10$
Volum at the end:
$V_{2}=V_{1}*(1+ \alpha* (t_{2}-t_{1}))$
$t_{2}-t_{1}=50-10=40$
α for helium = $0,003658\frac{1}{C}$
As the result you get:
$V_{2}=20*(1+0,003658*40)=22,9264 l$
Final volume of the balloon is 22,9264 liters.

(Only if it doesn't explode during being heated ;) just a joke)

8 0

3 years ago