Which of the following correctly describes the first animals that appeared?

Water at a gauge pressure of 3.8 atm at street level flows into an office building at a speed of 0.68 m/s through a pipe 5.4 cm

Nataliya [291]

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7 0

3 years ago

For your senior project, you would like to build a cyclotron that will accelerate protons to 10% of the speed of light. The larg

DIA [1.3K]

The given question is incomplete. The complete question is as follows.

For your senior project, you would like to build a cyclotron that will accelerate protons to 10% of the speed of light. The largest vacuum chamber you can find is 60 cm in diameter.

What magnetic field strength will you need?

Explanation:

Formula for the strength of magnetic field is as follows.

B = $\frac{mv}{qr}$

Here, m = mass of proton = $1.67 \times 10^{-27}$ kg

v = velocity = 10% of $3 \times 10^{8}$ = $3 \times 10^{7}$ m/s

q = charge of proton = $1.6 \times 10^{-19} C$

r = radius = $\frac{60}{2}$ = 30 cm = 0.30 m (as 1 m = 100 cm)

Therefore, magnetic field will be calculated as follows.

B = $\frac{mv}{qr}$

= $\frac{1.67 \times 10^{-27} \times 3 \times 10^{7}}{1.6 \times 10^{-19} C \times 0.30 m}$

= $\frac{5.01 \times 10^{-20}}{0.48 \times 10^{-19}}$

= 1.0437 T

Thus, we can conclude that magnetic field strength is 1.0437 T.

7 0

4 years ago

Energy can be changed from one form to another. Which terms can be used to describe these changes? Select all that apply.

aliya0001 [1]

Energy is the capacity to do work. Energy exists in various forms in the entire universe.

It may be light,sound,electric,magnetic,kinetic,potential,thermal energy etc.

As per the law of conservation of energy, it is neither created not destroyed. It can change from one form to another form.The total energy of the universe is always constant.

The process in which energy will change from one form to another form is called energy conversion.

There is also another terminology for energy conversion called energy transformation.

Energy transference is the process in which energy will be transferred from one body to another body.

Hence the correct answer to this question will be conversion and transformation

5 0

4 years ago

Read 2 more answers

A student measures the speed of sound by echo destiny classes hands and then measures the time to hear the echo his distance to

777dan777 [17]

Explanation:

∆x=300 m×2

∆t=1.5 s

v=∆x/∆t → v=2×300/1.5 = 400 m/s

6 0

3 years ago

For a point charge, how does the potential vary with distance from the point charge, r?

mr_godi [17]

For a point charge, how does the potential vary with distance from the point charge, r?

a constant

b. r.

c. 1/r.

d. $1/r^2$ .

e. $r^2$ .

Answer:

The correct option is C

Explanation:

Generally for a point charge the electric potential is mathematically represented as

$V = \frac{k Q }{r }$

Here we can deduce that the electric potential varies inversely with the distance i.e

$V \ \alpha \ \frac{1}{r}$

So

3 0

3 years ago