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natulia [17]
3 years ago
5

Think about how geothermal energy is captured and used. Explain how geothermal energy shows the flow of thermal energy from hot

to cold or cold to hot.
Physics
1 answer:
kumpel [21]3 years ago
8 0

Answer:

People can capture geothermal energy through: Geothermal power plants, which use heat from deep inside the Earth to generate steam to make electricity. Geothermal heat pumps, which tap into heat close to the Earth's surface to heat water or provide heat for buildings

When the weather is cold, the water or refrigerant heats up as it travels through the part of the loop that's buried underground. Once it gets back above ground, the warmed water or refrigerant transfers heat into the building. The water or refrigerant cools down after its heat is transferred.

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Two people are talking at a distance of 3.0 m from where you are and you measure the sound intensity as 1.1 × 10-7 W/m2. Another
ioda

Answer:

6.1875\times 10^{-8}

Explanation:

Assuming uniform spread of sound with no significant reflections or absorption. We know that sound intensity varies I=\frac {k}{r^{2}} where r is the distance

Since intensity is given then when at 3 m

1.1\times 10^{-7}= \frac {k}{3^{2}}

k=3^{2}\times 1.1\times 10^{-7}= 9.9\times 10^{-7}

Since we have the constant then at 4m

Intensity, I= \frac {9.9\times 10^{-7}}{4^{2}}=6.1875\times 10^{-8}

8 0
3 years ago
A space probe is coasting through space at a steady speed of 100p feet per second. the booster rocket fires for 1/2 seconds so t
aleksandr82 [10.1K]

Answer:

Acceleration: 9800 ft/s^2

Explanation:

The acceleration of an object is equal to the rate of change of velocity:

a=\frac{v-u}{t}

where

u is the initial velocity

v is the final velocity

t is the time taken for the velocity to change from u to v

For the space probe in this problem, we have:

u = 100 ft/s (initial velocity)

v = 5000 ft/s (final velocity)

t = 0.5 s (time taken)

Therefore, the acceleration is

a=\frac{5000-100}{0.5}=9800 ft/s^2

6 0
3 years ago
in 1984 don, disk that stayed aloft for 16.7 seonds supsuppose cain ran up a staricase during this time, reachig a height of 18.
laila [671]

Answer

given,

time of disk stayed a loft = 16.7 sec

height reached = 18.4 m

mass  = 72 kg

now work done is equal to change in potential energy

W = - (U_f - U_i)

W = - (mgh - 0)

W = - (72\times (-9.8) \times 18.4)

W = 12983.04 J

Positive sign means that work is in the direction of motion.

Power = \dfrac{Work\ done}{time}

Power = \dfrac{W}{t}

Power = \dfrac{12983.04}{16.7}

P = 777.42 Watts

8 0
3 years ago
Select all that apply. Sound is a ____ wave. longitudinal transverse pressure circular
elena-s [515]
The following apply:
Sound is a LONGITUDINAL wave.
Sound is a PRESSURE wave.
Longitudinal waves are waves in which the displacement of the medium is in the same direction as or opposite direction to the direction of wave propagation. An example of longitudinal wave is sound wave. Sound wave is also considered as a pressure wave as the result of the presence of repeating patterns of high and low pressure regions moving through a medium.
5 0
4 years ago
Read 2 more answers
Can someone help me please :( ASAP. Also I’m sorry if it’s small
Umnica [9.8K]

Answer:

Graph #2

Explanation:

Notice, on the position time graph, there is a constant rate of change. This means that there is a constant velocity, meaning it's a straight line. The line is decreasing so the velocity will be negative.

3 0
3 years ago
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