_________ transport is when something passes thru the cell membrane without any input of energy.

A room has a volume of 160 m3. An air-conditioning system is to replace the air in this room every 21.3 minutes, using ducts tha

serious [3.7K]

Answer:

A. 0.204203928 m

b. 0.1443939822

Explanation:

Givens:

Volume (V) = 160 m^3

velocity 1 (v1) = 3.00 m/s

velocity 2 (v2) = 6.00 m/s

Time (t) = 21.3 minutes = 1278 seconds

Side length = ?

V = A*v*t

A = s^2

V = s^2*v*t

s= $\sqrt{\frac{V}{v*t} }$

A.

s = $\sqrt{\frac{V}{v*t} }$ = $\sqrt{\frac{160}{3.00*1278} }$ = 0.204203928 m

B.

s = $\sqrt{\frac{V}{v*t} }$ = $\sqrt{\frac{160}{6.00*1278} }$ = 0.1443939822 m

I hope this helped!! Have a good day.

7 0

3 years ago

Describe the direction in which each object will accelerate. If the object won't accelerate, write "no

pychu [463]

Answer:

The object will accelerate in the upward direction.

Explanation:

To know the direction in which the object will accelerate, we shall determine the net force acting on the object. This can be obtained as follow:

Upward force (Fᵤ) = 300 N

Downward force (Fₔ) = 200 N

Net force (Fₙ) =?

Fₙ = Fᵤ – Fₔ

Fₙ = 300 – 200

Fₙ = 100 N upward

Thus, the net force acting on the object is 100 N in the upward direction. This implies that the object will accelerate in the upward direction because the net force acting on the object is in the upward direction.

7 0

3 years ago

Mountain and valley breezes are similar to land and sea breezes. During the

SpyIntel [72]

Answer:

simple.

Explanation:

7 0

2 years ago

How much hate is required to vaporize 1.5 kg of liquid water at its boiling point

fenix001 [56]

Enough hate to cause an extremely low pressure field around the water so it evaporates BELOW it's normal boiling point.

7 0

3 years ago

An alternator consists of a coil of area A with N turns that rotates in a uniform field B around a diameter perpendicular to the

matrenka [14]

Answer:

(a): $\rm 2\pi f\ NBA\ \sin(2\pi ft).$ .

(b): 20.94 Volts.

Explanation:

<u>Given:</u>

Area of the coil = A.
Number of turns of the coil = N.
Magnetic field in which the coil is placed = B.
The frequency with which the coil is rotating = f.

The magnetic flux linked with a coil is defined as

$\phi = N\vec B \cdot \vec A=\rm NBA\cos\theta$

where,

$\vec A$ is the area vector of the coil, directed along the normal to the plane of the coil.

$\theta$ = angle between the magnetic field and the area vector of the coil.

Assuming that the magnetic field is along the normal to the plane of the coil, initially.

Therefore, at any later time t, the angle which the magnetic field makes with the normal to the plane of the coil is is given by

$\rm \theta = 2\pi ft.$

Therefore, the magnetic flux linked with the coil at any time t is given by

$\rm \phi = NBA\cos(2\pi ft).$

According to the Faraday's law of electromagnetic induction, the emf induced in the coil is given by

$\rm e=-\dfrac{d\phi}{dt}\\=-\dfrac{d(NBA\cos(2\pi ft))}{dt}\\=-NBA\dfrac{d(\cos(2\pi ft))}{dt}\\=-NBA(-2\pi f\sin(2\pi ft))\\=2\pi f\ NBA\ \sin(2\pi ft).$

The amplitude of the alternating voltage is the maximum value of the induced emf in the coil, the induced emf in the coil is maximum when $\rm \sin(2\pi ft)=1$ .

Therefore, the amplitude of the alternating voltage is given by

$\rm e_o=(2\pi f)NBA\ 1\\=2\pi ft \ NBA.$

Given values are:

N = 100 turns.
A = $\rm 10^{-2}\ m^2$ .
B = 0.1 T.
f = 2000 rev/min = $\rm 2000\times \dfrac1{60}\ rev/s = 33.33\ rev/s.$

Putting all these values,

$\rm e_o=2\pi \times 33.33\times (100)\times (0.1)\times (10^{-2})=20.94\ Volts.$

7 0

3 years ago