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2 years ago

What enables the human eye to "see" light in the infrared range of the electromagnetic spectrum?

Physics

1 answer:

Phantasy [73]2 years ago

6 0

A thermogram<span> enables the human eye to "see" light in the infrared range of the electromagnetic spectrum.</span>

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Consider the same roller coaster. It starts at a height of 40.0 m but once released, it can only reach a height of 25.0 m above

poizon [28]

Answer:

The magnitude of the frictional force between the car and the track is 367.763 N.

Explanation:

The roller coster has an initial gravitational potential energy, which is partially dissipated by friction and final gravitational potential energy is less. According to the Principle of Energy Conservation and Work-Energy Theorem, the motion of roller coster is represented by the following expression:

$U_{g,1} = U_{g,2} + W_{dis}$

Where:

$U_{g,1}$ , $U_{g,2}$ - Initial and final gravitational potential energy, measured in joules.

$W_{dis}$ - Dissipated work due to friction, measured in joules.

Gravitational potential energy is described by the following formula:

$U = m \cdot g \cdot y$

Where:

$m$ - Mass, measured in kilograms.

$g$ - Gravitational constant, measured in meters per square second.

$y$ - Height with respect to reference point, measured in meters.

In addition, dissipated work due to friction is:

$W_{dis} = f \cdot \Delta s$

Where:

$f$ - Friction force, measured in newtons.

$\Delta s$ - Travelled distance, measured in meters.

Now, the energy equation is expanded and frictional force is cleared:

$m \cdot g \cdot (y_{1} - y_{2}) = f\cdot \Delta s$

$f = \frac{m \cdot g \cdot (y_{1}-y_{2})}{\Delta s}$

If $m = 1000\,kg$ , $g = 9.807\,\frac{m}{s^{2}}$ , $y_{1} = 40\,m$ , $y_{2} = 25\,m$ and $\Delta s = 400\,m$ , then:

$f = \frac{(1000\,kg)\cdot \left(9.807\,\frac{m}{s^{2}} \right)\cdot (40\,m-25\,m)}{400\,m}$

$f = 367.763\,N$

The magnitude of the frictional force between the car and the track is 367.763 N.

7 0

3 years ago

0.318 cm. What is the ideal mechanical advantage?

vodomira [7]

The ideal mechanical advantage will be 8.017. The ideal mechanical advantage value may be grater than the actual value of mechanical advantage.

<h3>What is mechanical advantage ?</h3>

Mechanical advantage is a measure of the ratio of output force to input force in a system, it is used to obtained efficiency of forces in levers and pulley.

The ideal mechanical advantage is found as;

$\rm IMA = \frac{d \pi}{l} \\\\ \rm IMA = \frac{0.812 \times \pi}{0.318} \\\\ IMA=8.017$

The ideal mechanical advantage will be 8.017.

To learn more about the mechanical advantage, refer to the link;

brainly.com/question/7638820

#SPJ1

5 0

2 years ago

Find the resultant of two components, 3km west and 4 km south. How do I solve this using the Pythagorean theorem?

Rasek [7]

Answer:5

Explanation:

a=3

b=4

c=√(a²+b²)

c=√9+16

c=√25

c=5

3 0

2 years ago

A tourist leaves Pittsburgh and travels 60 miles South on I-79 in 45 minutes. They exit after Wheeling and head west on I-70 and

attashe74 [19]

Answer:

<em>The tourist's average speed was 80 mph</em>

Explanation:

<u>Average Speed </u>

If an object travels a distance d in a time t regardless of the direction, the average speed is the quotient of the distance over the time:

$\displaystyle v=\frac{d}{t}$

The tourist leaves Pittsburgh and travels 60 miles South in 45 minutes. Then he heads West and travels 100 miles in 1 hour and 15 minutes.

The total distance traveled is:

d = 60 miles + 100 miles = 160 miles

The total time is:

t = 45 minutes + 1 hour + 15 minutes = 2 hours

The average speed is:

$\displaystyle v=\frac{160}{2}$

v = 80 mph

The tourist's average speed was 80 mph

8 0

3 years ago

Para que as colisões entre os hádrons sejam inelásticas, a grandeza fisica conservada é

ICE Princess25 [194]

Answer:

i need help myself how can i help you

Explanation:

periodt to the t on my luh boys

8 0

3 years ago