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3 years ago

Why is science literacy important?

1 answer:

8 0

Science literacy is important because it provides a context for addressing societal problems, and because a science- literate populace can better cope with many of its prob- lems and make intelligent and informed decisions that will affect the quality of their lives and those of their children

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A lens focuses light at a single point called the focal point. An illustration of a vertical converging lens with 5 parallel ray

djyliett [7]

Answer:

refraction

Explanation:

When waves, including light, pass through two media with different densities, the waves bend at the transition between the two media due to differences in speed and wavelength. Convex lenses bend (refract) light and concentrate it at one point called the focal point.

hope this helps

4 0

3 years ago

Two sound waves of equal amplitude interference so that compression of one wave falls on the rarefaction of the other. Which sta

iris [78.8K]

<span>A. No sound is heard
A*sin(wt)+(-A)*sin(wt)=0 - no sound

</span>

3 0

3 years ago

Which statement best describes the energy changes that occur while a child is riding on a sled down a steep, snow-covered hill?

lorasvet [3.4K]

Answer: When a child is riding on a sled down a steep, snow-covered hill, his elevation decreases and hence Kinetic energy increases and potential energy decreases.

i think this will help you

8 0

3 years ago

A He–Ne laser illuminates a narrow, single slit that is 1850 nm wide. The first dark fringe is found at an angle of 20.0∘ from t

egoroff_w [7]

Answer:

Wavelength of light will be 632.73 nm

Explanation:

We have given width of the single slit $d=1850nm-1850\times 10^{-9}m$

Angle is given as $\Theta =20^{\circ}$

We have to find the wavelength of light for first dark fringe

We know that for dark fringe it is given that

$dsin\Theta =n\lambda$

For first fringe n = 1

So $1850\times 10^{-9}\times sin20^{\circ} =1\times \lambda$

$\lambda =632.73nm$

3 0

3 years ago

A 100-watt electric incandescent light bulb consumes __________ J of energy in 24 hours. [1 Watt (W)

sweet-ann [11.9K]

Answer : The energy consumed by bulb in 24 hours is, 8.64 × 10⁶ J

Explanation :

As we are given that:

1 watt = 1 J/s

So,

100 watt = 100 J/s

Now we have to calculate the energy consumed by bulb in 24 hours.

As we know that:

1 hr = 60 min

1 min= 60 sec

So,

24 hr = 24 × 60 × 60 sec = 86400 sec

As, the energy consumed by bulb in 1 second = 100 J

So, the energy consumed by bulb in 86400 second = 86400 × 100 J

= 8.64 × 10⁶ J

Thus, the energy consumed by bulb in 24 hours is, 8.64 × 10⁶ J

5 0

3 years ago