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AveGali [126]
3 years ago
9

What is the speed of light? What is the speed of sound?

Physics
1 answer:
Rasek [7]3 years ago
8 0

Answer:

speed of light simulating traveling at the speed of light. Speed of light, speed at which light waves propagate through different materials. In particular, the value for the speed of light in a vacuum is now defined as exactly 299,792,458 metres per second

The speed of sound is the distance travelled per unit of time by a sound wave as it propagates through an elastic medium

You might be interested in
What are the three major types of severe weather? Describe at least two characteristics of each type
olga2289 [7]

Answer:

High winds, hail, excessive precipitation, and wildfires are forms and effects of severe weather, as are thunderstorms, downbursts, tornadoes, waterspouts, tropical cyclones, and extratropical cyclones. Regional and seasonal severe weather phenomena include blizzards (snowstorms), ice storms, and duststorms.

Explanation:High winds-  wind speeds as low as 23 knots (43 km/h) may lead to power outages when tree branches fall and disrupt power lines. Once wind exceed 135 knots (250 km/h) within strong tropical cyclones and tornadoes, homes  completely collapse,  and significant damage is done to larger buildings. Total disruption occurs once wind exceeds 175 knots (324 km/h)

Tornado- Typically look like a narrow funnel reaching from the clouds to the ground. Their wind speed goes from 65 to 250 miles per hour.

"An extreme weather condition in which we face the high speed wind in combination with heavy snow."

As for any blizzard has the normal wind speed of about 40 mph, and the visibility range reduces to less then 500 ft.

8 0
2 years ago
In the design of a supermarket, there are to be several ramps connecting different parts of the store. Customers will have to pu
Morgarella [4.7K]

Answer:No, the slope won't be too steep

Explanation:

Force is an external agency that causes a body to change its position while friction is a force that causes a body to slide over another. This force is called the frictional force (Ff). The force that causes a body to move is the moving force (Fm).

The slope will be too steep if the frictional force is greater than the moving force since the frictional force tends to oppose the moving force.

According to the explanation, we need to get Ff and compare with the moving force along the plane.

If Ff>Fm it means the slope will be too steep but if Ff<Fm, the slope won't be too steep and as such the body can easily be moved along the plane.

Resolving forces acting along the plane we have FmSintheta + Ff = Fm (FmSintheta and Ff are added because they act in the same direction along the plane)

Fm=50N, theta=5°

Imputing this into the formula to get Ff;

50sin5°+Ff =50

Ff= 50-50sin5°

Ff= 50-4.35

Ff= 45.65N

Since Ff<Fm, this means the slope is not too steep and as such the 30kg load can be moved along the plane easily.

5 0
2 years ago
Given that renewable sources provide only a small percentage of our energy and that nuclear power is so expensive, in your opini
Katena32 [7]

Answer:

No getting rid of fossil fuel is not at all possible.

Explanation:

Dream of 100% renewable energy is possible through electrification and use of energy from sun, water and wind. Since, the high production cost of power plant for extracting energy from these sources in itself is a big challenge and hence decarbonized energy in current scenario is not realistic.

3 0
2 years ago
Exposure to what kind of energy is sensed by human skin as warmth?
olganol [36]
Ultraviolet rays.

The sun emits UV rays which reach the earth by radiation, heats the earth. The harmful rays are reflected back.
Hope it helped!
5 0
3 years ago
7. A photon of violet light has a frequency of 7.57 x 10' Hz. How much
hichkok12 [17]

Answer:

3.13 eV

Explanation:

E = hf

f =7.57 x 10' Hz.

h = 6.62× 10-34Js

E = 6.62× 10-34 × 7.57 x 10' Hz

E = 5.011× 10^ -30 J

1eV = 1.6×10^-19J

Hence ,

5.011× 10^ -30 J ÷1.6×10^-19J

= 3.132×10^-49

8 0
3 years ago
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