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Orlov [11]
3 years ago
13

Kinds of solar power stations

Physics
1 answer:
sweet-ann [11.9K]3 years ago
7 0
There are Three main types of concentrating solar thermal power systems: linear concentrating systems, which include public Troughs and linear fresnel reflectors. solar power towers.
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Help pls .. Which image shows an example of the strong nuclear force in action?
Vedmedyk [2.9K]

Answer:

The answer is D.

Explanation:

Just took the quiz. Not sure if u still need help

3 0
2 years ago
Read 2 more answers
Cellus<br> Find the x-component of this<br> vector:<br> 92.5 m<br> 32.0
Mazyrski [523]

Explanation:

x-component:

Vx = Vcos(theta)

= (92.5 m)cos(32.0)

= 78.4 m

5 0
3 years ago
A small ball is attached to one end of a spring that has an unstrained length of 0.169 m. The spring is held by the other end, a
Nadya [2.5K]

The ball moves around in circular motion. The centripetal force keeping it in circular motion is given by:

F = mv²/r

F = centripetal force, m = mass of ball, v = velocity of ball, r = radius of motion

The force the spring exerts on the ball is given by:

F = kΔx

F = spring force, k = spring constant, Δx = change of spring length

The spring provides the centripetal force that keeps the ball in circular motion, so set the spring force equal to the centripetal force:

kΔx = mv²/r

Let's do some algebra:

m/k = rΔx/v²

Now if we attach the same spring to the ceiling with the ball still fixed to one end and let the ball hang in static equilibrium, the spring force would balance the ball's weight:

kΔx' = mg

k = spring constant, Δx' = new change in spring length, m = mass, g = gravitational acceleration

Let's do some more algebra:

Δx' = gm/k

Substitute m/k with our previous result, rΔx/v²:

Δx' = grΔx/v²

Given values:

g = 9.81m/s²

r = 0.169m + 0.0131m = 0.1821m

Δx = 0.0131m

v = 3.15m/s

Plug in the values and solve for Δx':

Δx' = 9.81(0.1821)(0.0131)/3.15²

Δx' = 0.0024m

5 0
3 years ago
The front and rear sprockets on a bicycle have radii of 8.40 and 4.91 cm, respectively. The angular speed of the front sprocket
Rudik [331]

Explanation:

It is given that,

Radius of the front sprockets, r_f=8.4\ cm=0.084\ m

Radius of the rear sprockets, r_r=4.91\ cm=0.0491\ m

The angular speed of the front sprocket is 12.3 rad/s, \omega_f=12.3\ rad/s

(a) Linear speed of the front sprockets, v_f=r_f\times \omega

v_f=0.084\times 12.3    

v_f=1.0332\ m/s

v_f=103.32\ cm/s

Linear speed of the rear sprockets, v_r=r_r\times \omega

v_r=0.0491\times 12.3    

v_r=0.60393\ m/s

v_r=60.393\ cm/s

(b) Let a_r is the centripetal acceleration of the chain as it passes around the rear sprocket.

a_r=\dfrac{v_r^2}{r_r}

a_r=\dfrac{(60.393)^2}{0.0491}

a_r=74283.39\ m/s^2

a_r=7428339\ cm/s^2

`Hence, this is the required solution.

8 0
3 years ago
Read 2 more answers
Orange light of wavelength 0.61 µ m in air enters a block of glass with εr = 1.44. What color would it appear to a sensor embedd
77julia77 [94]

Answer:

0.5083\ \mu m

Explanation:

\lambda_0 = Actual wavelength = 0.61\ \mu m

\varepsilon_r = Relative permittivity = 1.44

The observed wavelength in the glass is given by

\lambda=\dfrac{\lambda_0}{\sqrt{\varepsilon_r}}\\\Rightarrow \lambda=\dfrac{0.61}{\sqrt{1.44}}\\\Rightarrow \lambda=0.5083\ \mu m

The wavelength lies in the range of green light.

Hence, the observed color of light is 0.5083\ \mu m

8 0
3 years ago
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