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tia_tia [17]
3 years ago
11

It is now virtually certain that the dominant cause of recent ice ages is

Physics
1 answer:
Anarel [89]3 years ago
5 0
<span>Variations in Earth-Sun orbital relationships.</span>
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Which part of the planet had the highest concentration of ozone in 1989?
Nat2105 [25]

Answer:

earth

sorry I need points but I don’t know the answer again I’m really sorry

4 0
2 years ago
A hydrogen fuel cell supplies power for a small motor. the fuel cell delivers a current of 0.5 a and a voltage of 0.43 v. what i
gogolik [260]
We want to know what is the power supplied by the power cell if the current I=0.5 A and the voltage V=0.43 V. The equation for power P is P= I*V, so:

P=I*V=0.5*0.43=0.215 W

So the correct answer is that the power cell is supplying the motor with P=0.215 W of power. 
8 0
3 years ago
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3 years ago
Explain the difference between objects that are sources of light and objects that reflect light
podryga [215]

Answer:

sun is the main source while the other object reflect light on the sun

Explanation:

nasa libro yans

4 0
3 years ago
If the distance between slits on a diffraction grating is 0.50 mm and one of the angles of diffraction is 0.25°, how large is th
Trava [24]

Answer:

-  path differnce = 2.18*10^-6

-  1538 lines

Explanation:

- The path difference for the waves that produce the pattern of diffraction, is given by the following formula:

path\ difference\ = dsin\theta           (1)

d: separation between slits = 0.50mm = 0.50*10^-3 m

θ: angle of a diffraction = 0.25°

Then, the path difference is:

path\ difference\ =(0.50*10^{-3}m)sin(0.25\°)=2.18*10^{-6}m

- The maximum number of bright lines are calculated by using the following formula:

m\lambda = dsin\theta           (2)

m: order of the bright

λ: wavelength = 650nm

The maximum bright is calculated for an angle of 90°:

m=\frac{(0.50*10^{-3}m)sin90\°}{650*10^{-9}m} \approx 769

The maxium number of bright lines are twice the previous result, that is, 1538 lines

8 0
3 years ago
Read 2 more answers
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