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Feliz [49]
3 years ago
7

PLEASE PLEASE HELP (Picture)

Physics
1 answer:
atroni [7]3 years ago
7 0

Answer:

light slows it down

Explanation:

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Which energy changes take place when a pedalling cyclist uses a generator (dynamo) to light his bicycle lamp?
Elina [12.6K]

Answer: chemical → kinetic → electrical → light

Explanation: At the same time when the generator lights up the bicycle lamp the lamp lights up using electrical energy so mechanical energy is also transformed into electrical energy.

8 0
2 years ago
Estimate (a) the maximum, and (b) the minimum thermal conductivity values (in W/m-K) for a cermet that contains 83 vol% carbide
velikii [3]

Answer:

  k_max = 31.82 w/mk

  k_min  = 17.70 w/mk

Explanation:

a) the maximum thermal conductivity is given as

k_{max} = k_m*v_m + k_p*v_p

where k_m is thermal conductvitiy of metal

k_p is thermal conductvitiy of carbide

v_m = proportion of metal in the cement = 0.17

v_p = proportion of carbide in the cement = 0.83

            = 66*0.17 + 28*0.83

           k_max = 31.82 w/mk

b) the minimum thermal conductivity is given as

k_{min} = \frac{k_{carbide}* k_{metal}}{k_{metal} v_{carbide} +k_{metal} v_{carbide}}

          = \frac{28+66}{28*0.17 +66*0.83}

       k_min  = 17.70 w/mk

7 0
3 years ago
5 Which of the following must be transformed into electrical energy when biomass is used as an energy resource? * DS (20 Points)
Lemur [1.5K]

Answer:

nuclear energy

Explanation:

3 0
3 years ago
How does the speed of light compare to the speed of sound?
Lelu [443]
Light is faster. Humans can travel faster than sound, however not light- nothing seems to go faster than 3×10∧8 meters per second.
7 0
3 years ago
An x-ray beam with wavelength 0.240 nmnm is directed at a crystal. As the angle of incidence increases, you observe the first st
siniylev [52]

Answer:

The spacing between the planes of the crystal is 0.295 nm

Explanation:

Given:

λ = wavelength = 0.24 nm

θ = angle of incidence = 66°

The spacing d between the planes of the crystal is equal:

d=\frac{n\lambda }{2cos\theta } =\frac{1*0.24}{2*cos66} =0.295nm

7 0
3 years ago
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