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Alex787 [66]
3 years ago
12

Which best describes how geothermal energy is used to make electricity?. . A.. Rocks are split to release energy that drives a s

team turbine attached to an electrical generator.. . B.. Heat energy from below the ground converts water to steam to drive a steam turbine attached to an electrical generator.. . C.. Heat energy from below the ground drives liquid water though a turbine attached to an electrical generator.. . D.. Heat energy from below ground heats and presuurizes air that drives a turbine attached to an electrical generator..
Physics
1 answer:
In-s [12.5K]3 years ago
6 0
Answer is b that is  Heat energy from below the ground converts water to steam to drive a steam turbine attached to an electrical generator.. . 
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A metal conduit will be used as a pathway for wiring through a concrete block. The conduit is a 4 foot long rod with an outer di
AlekseyPX

Answer:510. 12 cm^3

The volume of a cylindrical conduit, V=\pi (r_2^2-r_1^2) h

where r_1 is the inner radius, r_2 is the outer radius, h is the length.

First of all, we would covert each parameter into centimeters.

length of the conduit, h=4 ft=4\times 30.48 cm=121.92 cm

outer radius, r_1=2.2/2 in =1.1 in= 1.1\times 2.54 cm=2.79 cm

inner radius, r_1=2/2 in =1 in= 2.54 cm

Insert the values in the volume formula,

V=3.14 \times (2.79^2-2.54^2) \times 121.92 cm^3=510. 12 cm^3

Hence, the volume of metal in the conduit is 510. 12 cubic centimeters.

7 0
3 years ago
Read 2 more answers
Which of the following statements is FALSE?
kobusy [5.1K]
The false statement would be :
C. constructive interference occurs when the crest of one wave overlaps the trough of another and their individual effects are reduced or cancelled out.

Constructive interference should be when the crest of one wave overlaps another and their individual effects are add up, becoming a single wave of increased amplitude<span />
6 0
3 years ago
Anyone help me please?
choli [55]

Answer:

I  believe that its B my apologies  if its wrong/

Explanation:

3 0
3 years ago
If you walk 1.2 km north and then 1.6 km east, what are the magnitude and direction of your resultant displacement?
vodomira [7]

<u>Answer:</u>

 Option A is the correct answer.

<u>Explanation:</u>

  Let the east point towards positive X-axis and north point towards positive Y-axis.

 First walking 1.2 km north,  displacement = 1.2 j km

 Secondly 1.6 km east, displacement = 1.6 i km

 Total displacement = (1.6 i + 1.2 j) km

 Magnitude = \sqrt{1.2^2+1.6^2} = 2 km

 Angle of resultant with positive X - axis = tan^{-1}(1.2/1.6)=36.87^0 = 36.87⁰ east of north.

 

5 0
3 years ago
A 1.4-kg block slides freely across a rough surface such that the block slows down with an acceleration of â1.25 m/s2. what is t
Marianna [84]

Mass of the block = 1.4 kg

Weight of the block = mg = 1.4 × 9.8 = 13.72 N

Normal force from the surface (N) = 13.72 N

Acceleration = 1.25 m/s^2

Let the coefficient of kinetic friction be μ

Friction force = μN

F(net) = ma

μmg = ma

μg = a

μ = \frac{a}{g}

μ = \frac{1.25}{9.8}

μ = 0.1275

Hence, the coefficient of kinetic friction is: μ = 0.1275

6 0
3 years ago
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