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s2008m [1.1K]
3 years ago
13

Color is the visual perception of the

Physics
2 answers:
frez [133]3 years ago
7 0
Visible Light Spectrum (VLS).
Radda [10]3 years ago
6 0

Color is the visual perception of different wavelengths of the electromagnetic energy that enters our eyes ... just as long as it's somewhere between about 350 nm and 700 nm. If it's not somewhere in that single octave of wavelength, then we don't even know it's there at all.

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A 0.5 kg ball moves in a circle that is 0.4 m in radius at a speed of 4.0 m/s. Calculate the force exerted on the ball.
blsea [12.9K]

Answer:

Explanation:

Given a ball of mass m= 0.5kg

The ball moves in as circle of radius r= 0.4m

Speed of the ball is v = 4m/s

Centripetal force is exerted on ball and it is given as

Fc = m•ac

ac is centripetal acceleration and it is given as

ac = v²/r

Then,

Fc = mv²/r

Fc = 0.5 × 4²/0.4

Fc = 20N.

The force exerted on the ball is 20N

5 0
3 years ago
Imagine that a hypothetical life form is discovered on our moon and transported to Earth. On a hot day, this life form begins to
almond37 [142]

Answer:

The heat of vaporization 580 cal/g times 602g = cal in human  and do the same for life form.

Explanation:

4 0
3 years ago
considere que o calor específico de um material presente nas cinzas seja c=0,8j/gc. Supondo que esse material entre na turbina a
drek231 [11]

Answer:

3120J

Explanation:

Given parameters:

C  = Specific heat capacity  = 0.8J/g°C

Initial temperature  = 20°C

Mass given   = 5g

Final temperature  = 800°C

Unknown:

Energy given to the mass  = ?

Solution:

To find the energy given to the mass, let us simply use the expression below:

          H   =   m   c   ΔT

H is the unknown, the energy supplied

m is the mass of the substance

c is the specific heat capacity

ΔT is the change in temperature

Input the variables;

            H    = 5  x   0.8    x    (800 - 20)  = 3120J

7 0
3 years ago
Acceleration is defined as the rate of change for which of the following?
Snowcat [4.5K]
<span>B. velocity .................</span>
6 0
3 years ago
Read 2 more answers
0<br> What is 33 C in absolute temperature? hs
AysviL [449]

Answer:

33 Celsius is 306.15 in absolute temperature

7 0
3 years ago
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