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3 years ago

The amount of light that enters the pupil is controlled by the: retina. lens. inis.

Physics

1 answer:

nignag [31]3 years ago

5 0

Answer: The amount of light that enters the pupil is controlled by the Iris

Explanation:

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The crystal in a digital watch oscillates at a rate of 215 Hz. If the maximum displacement of one crystal face (measured from on

Marizza181 [45]

The maximum speed of the face is determined as 6.75 x 10⁻⁵ m/s.

<h3>Maximum speed of the face</h3>

v = fλ

where;

f is frequency of the wave
λ is the wavelength

<h3>Angular speed of the wave</h3>

ω = 2πf

v(max) = ωA

v(max) = 2πfA

where;

A is amplitude of the wave

v(max) = 2π(215)(50 x 10⁻⁹ m)

v(max) = 6.75 x 10⁻⁵ m/s

Thus, the maximum speed of the face is determined as 6.75 x 10⁻⁵ m/s.

Learn more about maximum speed here: brainly.com/question/4931057

#SPJ1

4 0

2 years ago

Water is poured into a bowl at a constant rate of 17.0 cm^3/s. The bowl has a circular cross section, but does not have a unifor

7nadin3 [17]

Answer:

10.29 cm/s

Explanation:

Discharge in to the bowl = 17.0 cm³/s

Diameter of the bowl, d₁ = 1.45 cm

Now,

Rate at which water level rise at its diameter = $\frac{\textup{Discharge}}{\textup{Area of cross-section}}$

also,

Area of cross-section = $\frac{\pi}{\textup{4}}\times1.45^2$

Area of cross-section = 1.651 cm²

Therefore,

Rate at which water level rise at its diameter = $\frac{\textup{17}}{\textup{1.651}}$

Rate at which water level rise at its diameter = 10.29 cm/s

8 0

4 years ago

When a hair dryer is being used, one of the energy transformations that takes place is

Maru [420]

Hello,

The answer is B) <span>electrical to mechanical.
</span><span>
When a hair dryer is being used, one of the energy transformations that takes place is </span>electrical to mechanical. Once you plug the hair dryer into the outlet, an electric current flows, starting the mechanical hair dryer.

Faith xoxo<span />

3 0

3 years ago

Read 2 more answers

Determine the velocity that a car should have while traveling around a frictionless curve of radius 100m and that is banked 20 d

alex41 [277]

Answer:

$v=18.89\frac{m}{s}$

Explanation:

From the free-body diagram for the car, we have that the normal force has a vertical component and a horizontal component, and this component act as the centripetal force on the car:

$\sum F_x:Nsin(20^\circ)=ma_c(1)\\\sum F_y:Ncos(20^\circ)=mg(2)$