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Leno4ka [110]
3 years ago
8

If a total force exerted by water in a container with a bottom area of 2 square meters is 450 newtons, what's the water pressure

at the bottom of the container?        A. 0.900 kPa   B. 0.225 kPa   C. 0.575 kPa   D. 0.300 kPa
Physics
2 answers:
m_a_m_a [10]3 years ago
7 0

its B 0.225kPa using the formula p=f/A then change the pascals into kpa

Ipatiy [6.2K]3 years ago
7 0

The Correct answer to this question for Penn Foster Students is: 0.225 kPa

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When a medium is disturbed by a wave, does it move with the wave?
DerKrebs [107]

Answer:

As they vibrate, they pass the energy of the disturbance to the particles next to them, which pass the energy to the particles next to them, and so on. Particles of the medium don't actually travel along with the wave. Only the energy of the wave travels through the medium

8 0
3 years ago
The roller coaster car reaches point A of the loop with speed of 20 m/s, which is increasing at the rate of 5 m/s2. Determine th
slavikrds [6]

Answer and Explanation:

Data provided as per the question is as follows

Speed at point A = 20 m/s

Acceleration at point C = 5 m/s^2

r_A = 25 m

The calculation of the magnitude of the acceleration at A is shown below:-

Centripetal acceleration is

a_c = \frac{v^2}{r}

now we will put the values into the above formula

= \frac{20^2}{25}

After solving the above equation we will get

= 16 m/s^2

Tangential acceleration is

= \sqrt{ac^2 + at^2} \\\\ = \sqrt{16^2 + 5^2}\\\\ = 16.703 m/s^2

6 0
3 years ago
Transcranial magnetic stimulation (TMS) is a noninvasive technique used to stimulate regions of the human brain. A small coil is
Xelga [282]

Answer:

7.3114*10^{-5}V

Explanation:

To give a solution to the exercise, it is necessary to consider the concepts related to magnetic flux and Faraday's law of induction. Faraday's law states that the voltage induced in a closed circuit is directly proportional to the speed with which the magnetic flux that crosses any surface with the circuit as an edge changes over time.

It is represented under the equation,

\epsilon = N \frac{\Delta\Phi}{\Delta t}

Where,

\epsilonis the induced electromotive force

N = Number of loops

\Delta t= Time

\Delta\Phi= Magnetic Flux

For definition the change in magnetic flux is:

\Delta \Phi = \Delta B A cos\phi

Where,

B= Magnetic field

Substituting at the first equation we have

\epsilon = N \frac{\Delta B A Cos\phi}{\Delta t}

\epsilon = N \frac{(B_2-B_1) (\pi r^2) Cos\phi}{\Delta t}

Our values are given by,

N = 1 turn

B_2 = 1T

B_1 = 0T

r = 1.6mm

\phi = 0\°

\Delta t = 100ms

Replacing,

\epsilon = (1) \frac{(1-0) (\pi (1.6*10^{-3})^2) Cos(0)}{110*10^{-3}}

\epsilon = 7.311*10^{-5}V

<em>Therefore the magnitud of the induced emf around a horizontal circle of tissue is 7.3114*10^{-5}V</em>

8 0
4 years ago
A magnetic field is perpendicular to the plane of a flat coil. Since the magnitude of the field is increasing, an emf will be in
Blababa [14]

Answer:

D) Reduce the time interval during which the magnitude of the field increases.

6 0
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The sugar molecule known as sucrose is a polar molecule. Which statement BEST summarizes how sucrose will dissolve in water?
rodikova [14]
The answer to your question is c
7 0
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