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Question: Describe the three types of seismic waves
Answer:
P- Waves ( Primary Waves). The shock waves become after the movements of two massive rocks are called P- waves means...
S- waves ( Secondary waves). The wave created after the reflection of primary waves called S waves (secondary waves).
L- Waves (Surface waves). When the released energy comes on the surface of the earth, that time...
Answer:
1,500 ohms is the total resistance
Answer:
Good:
Quarrying creates jobs in areas where there are limited opportunities.
There is a huge demand for the products of quarrying, such as building stone and cement. ...
Quarrying provides income to local councils through taxation.
Good communications are needed for transporting the products of quarrying.
Bad: Quarrying creates pollution from noise and dust.
Heavy traffic causes pollution and congestion on narrow country roads. ...
Quarries create visual pollution and tourists may be deterred by the scars on the landscape.
Explanation:
Answer:
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Answer:
3.1 × 10^- 7 m and 2.1 × 10^-7 m
Explanation:
First we must convert each value of energy to Joules by multiplying its value by 1.6 ×10^-19. After that, we can now obtain the wavelength from E= hc/λ
Where;
h= planks constant
c= speed of light
λ= wavelength of light
For 6.0ev;
E= 6.0 × 1.6 ×10^-19
E= 9.6 × 10^-19 J
From
E= hc/λ
λ= hc/E
λ= 6.6 × 10^-34 × 3 × 10^8/9.6 × 10^-19
λ= 2.1 × 10^-7 m
For 4.0 eV
4.0 × 1.6 × 10^-19 = 6.4 × 10^-19 J
E= hc/λ
λ= hc/E
λ= 6.6 × 10^-34 × 3 × 10^8/6.4 × 10^-19
λ= 3.1 × 10^- 7 m