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3 years ago

The type of specialized cell whose main function is to communicate between neurons is a(n):

Physics

1 answer:

WITCHER [35]3 years ago

4 0

Answer:

Explanation:

The type of specialized cell whose main function is to communicate between neurons is a(n) interneuron

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Light from a laser forms a 1.31-mm diameter spot on a wall. If the light intensity in the spot is what is the power output of th

Wewaii [24]

Answer:

0.04973 W

Explanation:

I = Intensity of laser = $3.69\times 10^4\ W/m^2$ (assumed, as it is not given)

d = Diameter of spot = 1.31 mm

r = Radius = $\dfrac{d}{2}=\dfrac{1.31}{2}\ mm$

A = Area = $\pi r^2$

Power is given by

$P=IA\\\Rightarrow P=3.69\times 10^4\times \pi \dfrac{(1.31\times 10^{-3})^2}{4}\\\Rightarrow P=0.04973\ W$

The power output of the laser is 0.04973 W

5 0

3 years ago

Sort the processes based on the type of energy transfer they involve. condensation freezing deposition sublimation evaporation m

Eduardwww [97]

Answer:

condensation - thermal energy removed

freezing -thermal energy removed

deposition - thermal energy removed

sublimation - thermal energy added

evaporation - thermal energy added

melting - thermal energy added

Explanation:

Thermal energy is heat energy. Processes in which heat is added involve the addition of thermal energy while processes in which heat energy is removed involves removal of thermal energy.

Condensation involves a change from gas to liquid, freezing involves a change from liquid to solid while deposition involves the settling of mobile particles at a place. All these processes involve a decrease in energy of particles.

On the other hand, sublimation is a direct change from solid to gas, melting involves a change from solid to liquid while evaporation involves a change from liquid to gas. All these processes occur when energy is added to the particles in a system.

6 0

3 years ago

A bungee jumper jumps off a bridge and bounces up and down several times.

Stella [2.4K]

The energy that was lost due to air resistance while she was bouncing is determined as 3,360 J.

<h3>Conservation of energy</h3>

The amount of energy lost due to air resistance while she was bouncing is determined from the principle of conservation of energy.

ΔE = P.E - Ux

ΔE = mgh - ¹/₂kx²

ΔE = (50)(9.8)(16) - ¹/₂(35)(16)²

ΔE = 3,360 J

Thus, the energy that was lost due to air resistance while she was bouncing is determined as 3,360 J.

Learn more about energy here: brainly.com/question/13881533

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3 0

2 years ago

What distance will an object cover in 20 seconds if it is moving at 8 m/s

Nitella [24]

Answer:

160 m

Explanation:

distance covered in 1 s = 8 m

therefore, distance covered in 20 s = 8 * 20 m = 160 m

4 0

3 years ago

Suppose there is a bright fringe at P Would this bright fringe move closer to O, move further away, or be unchanged, t 1.5 marks

fiasKO [112]

Answer:

Explanation:

The distance of a fringe from centre is proportional to wavelength of light

and inversely proportional to separation of slits. The expression for distance x is given by

x = nλ D / d

where λ is wave length , D is screen distance and d is slit separation.

So first option only is correct because

1 ) the wavelength of blue light is less than that of red

2) Intensity of light does not affect distance of fringe from the centre.

Diffraction symbolises bending of light around sharp edges like slits or boundaries of opaque objects etc.Due to this reason , we do not observe sharp boundary of shadow of an object. Instead around the boundary of shadow, we observe bands of bright and dark color which are also called fringes.

The phenomena of diffraction is explained by wave theory of light.

3 0

3 years ago