2 years ago

2. Ms. McAdam, a high school principal, examines

Physics

1 answer:

liq [111]2 years ago

6 0

Answer:

2005

Explanation:

You might be interested in

Where is energy being applied to the system?

Aleksandr-060686 [28]

Well i cant answer the first question due to absence of diagram
For the second queation, the energy affects the Frequency of wave, the higher the ebrgy the higher the frequency. Since frequency =1/Period,energy can also be said to alter the period. Since wave speed = Frequency *Wavelength, the speed is also increase due to increase in the frequency.
its amplitude increases too by the way.

3 0

4 years ago

According to the universal law of gravitation the force of attraction between two objects depends on the masses of the objects a

barxatty [35]

The distance between them
F = (GMm)/r^2

3 0

3 years ago

Suppose a small quantity of radon gas, which has a half-life of 3.8 days, is accidentally released into the air in a laboratory.

Daniel [21]

Answer:

1 day

Explanation:

Let the safe level = x

The current level = x + 0.2x = 1.2 x

Thus,

Half life = 3.8 days

$t_{1/2}=\frac {ln\ 2}{k}$

Where, k is rate constant

So,

$k=\frac {ln\ 2}{t_{1/2}}$

$k=\frac {ln\ 2}{3.8}\ days^{-1}$

The rate constant, k = 0.1824 days⁻¹

Using integrated rate law for first order kinetics as:

$[A_t]=[A_0]e^{-kt}$

Where,

$[A_t]$ is the concentration at time t

$[A_0]$ is the initial concentration

So,

$\frac {[A_t]}{[A_0]}$ = x / 1.2 x = 0.8333

t = ?

$\frac {[A_t]}{[A_0]}=e^{-k\times t}$

$0.8333=e^{-0.1824\times t}$

t ≅ 1 day

<u>Lab must be vacated in 1 day.</u>

4 0

3 years ago

You are asked to help design a new type of loop-the-loop ride. Instead of rolling down a long hill to generate the speed to go a

Trava [24]

Answer

The answer and procedures of the exercise are attached in the following archives.

Step-by-step explanation:

You will find the procedures, formulas or necessary explanations in the archive attached below. If you have any question ask and I will aclare your doubts kindly.

5 0

4 years ago

Sitting at the top of a steep hill on a roller coaster (not moving), is an example of:

Marianna [84]

It’s an example of gravitational potential energy

3 0

3 years ago

Read 2 more answers