All categories

4 years ago

Name two ways the eye adapts to dim light

1 answer:

5 0

There are many ways that eye adapts to dim light but i will name only 2

1) Efficiency
2) Ambient light response

hope thHIs helPs

You might be interested in

1. Place the following in logical order by writing the numbers 1 through 6 in the spaces provided.

grin007 [14]

Answer:

ecdbaf

Explanation:

4 0

3 years ago

A car travels due east with a speed of 38.0 km/h. Raindrops are falling at a constant speed vertically with respect to the Earth

DiKsa [7]

Answer: 116.926 km/h

Explanation:

To solve this we need to analise the relation between the car and the Raindrops. The cars moves on the horizontal plane with a constant velocity.

Car's Velocity (Vc) = 38 km/h

The rain is falling perpedincular to the horizontal on the Y-axis. We dont know the velocity.

However, the rain's traces on the side windows makes an angle of 72.0° degrees. ∅ = 72°

There is a relation between this angle and the two velocities. If the car was on rest, we will see that the angle is equal to 90° because the rain is falling perpendicular. In the other end, a static object next to a moving car shows a horizontal trace, so we can use a trigonometric relation on this case.

The following equation can be use to relate the angle and the two vectors.

Tangent (∅) = Opposite (o) / adjacent (a)

Where the Opposite will be the Rain's Vector that define its velocity and the adjacent will be the Car's Velocity Vector.

Tan(72°) = Rain's Velocity / Car's Velocity

We can searching for the Rain's Velocity

Tan(72°) * Vc = Rain's Velocity

Rain's Velocity = 116.926 km/h

3 0

3 years ago

A fire hose 5 centimeters in diameter is used to fill a 225-liter bucket. If it takes 15 seconds to fill the bucket, what is the

Vika [28.1K]

I believe you ask about speed at the end of the hose:

The volume of the bucket is 225 liters which is equal to 225 $dm^{3}$ .
$V=225dm^{3}$
Hose's cross section can be counted with the typical circle's area formula (with diameter instead of radius, that's why you've got a fraction):
$A=3,14*\frac{d^{2}}{4}}=0,19625dm^{2}$

$225dm^{3}$ are filled within 15 second.

As the bucket is being filled you can say that it's volume is the volume of the water that flowed out of the hose, then:
$V=A*h$
The speed of the water can be counted with equation:
$v=\frac{h}{t}$
After extracting h from the volume's equation you get:
$v=\frac{V}{A*t}$
When you count the fraction you get the answer:
$v=76,43\frac{dm}{s}=0,7643\frac{m}{s}$

4 0

3 years ago

As a liquid evaporates, its temperature

Zigmanuir [339]

the temperature

increases

7 0

4 years ago

Read 2 more answers

A space craft is traveling in interplanetary space at a constant velocity. what is the estimated distance traveled by the space

mina [271]

Answer:

A. 2.30 x 10^2 kil

Explanation:

3/2 = 1.5 and 0.72/2 = 0.36

1.93 + 0.36 = 2.29

2.29 = about 2.30

7 0

3 years ago