Which is an example of a way that

When the sun heats up the suface of the water, the water

nadya68 [22]

Answer:

In the water cycle, evaporation occurs when sunlight warms the surface of the water. The heat from the sun makes the water molecules move faster and faster, until they move so fast they escape as a gas. Once evaporated, a molecule of water vapor spends about ten days in the air.

Explanation:

5 0

3 years ago

What type of thermal transfer happens as waves of infrared radiation?

Mkey [24]

The hotter an object is, the more infrared radiation it emits. Infrared radiation is a type of electromagnetic radiation, which involves waves rather than particles. This means that, unlike conduction and convection, radiation can even pass through the vacuum of space.

5 0

3 years ago

you drive in a straight line at 20.0m/s for 10.0 min, then 30.0m/s for another 10.0 min. Find the average speed.

Juliette [100K]

Answer is 25 m/s.

Explanation;

Step 1 : Convert the units into same unit.

Here speeds are given in m/s while the time is in minutes. So, let's convert minutes into seconds.

1 min = 60 s

Then,

10 minutes = 10 x 60 s = 600 s

Step 2 : Find the total distance that you have travelled.

To find that you need to first find distances separately.

We know the formula, s = vt, where s is the distance, v is the speed or velocity and t is the time.

First you have travelled 10 minutes (600 s) at 20.0 m/s.

Then distance, s = 20.0 m/s x 600 s = 12 000 m

Secondly you have travelled again 10 minutes at 30.0 m/s

Then distance = 30.0 m/s x 600 s = 18 000 m

Then, the total distance = 12 000 m + 18 000 m = 30 000 m

Step 3 : Find the total time taken to travel.

Total time = 600 s + 600 s = 1200 s

Step 4 : Calculate the average speed.

Average speed = total distance / total time

= 30 000 m / 1200 s

= 25 m/s

6 0

3 years ago

A machinist turns the power on to a grinding wheel, at rest, at time t = 0 s. The wheel accelerates uniformly for 10 s and reach

Nookie1986 [14]

Answer:489 Revolutions

Explanation:

Given

Angular deceleration $(\alpha ) =1.5rad/s^2$

Given wheel angular velocity =96 rad/s when machine is turned off

time taken by machine to reach zero angular velocity

$0=\omega _0+(\alpha)t$

0=96+(-1.5)t

t=64 sec

angular displacement is given by

$\theta =\omega_0t+\frac{1}{2}\alpha t^2$

$\theta =96(64)-\frac{1}{2}(-1.5)(64^2)=3072 degree$

For revolutions = $\frac{3072}{2\cdot \pi}=488.86 \approx 489 revolution during Slowdown$

5 0

3 years ago

A cold coke bottle is on the pan of a balance and is left open. What happens to its weight?

Arlecino [84]

Answer:

It's weight would decrease over time.

Explanation:

The cold coke is going to stabilise in the room temperature. This causes the coke to heat up to room temperature. When the coke heats up, some molecules acquire enough kinetic energy that the evaporate. The evaporation of the molecules causes a decrease in weight.

Hope it helped!

3 0

3 years ago

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