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valkas [14]
3 years ago
12

PLEASE HELP ME!!!

Physics
1 answer:
denis-greek [22]3 years ago
6 0
The reason for that is that P-waves (primary waves) travel faster than S-waves (secondary waves).

If we call v_p the speed of the primary waves and v_s the speed of the secondary waves, and we call S the distance of the seismogram from the epicenter, we can write the time the two waves take to reach the seismogram as
t_P =  \frac{S}{v_P}
t_S= \frac{S}{v_S}

So the lag time between the arrival of the P-waves and of the S-waves is
\Delta t = t_S-t_P= \frac{S}{v_S}- \frac{S}{v_P}= S(\frac{1}{v_S}- \frac{1}{v_P})
We see that this lag time is proportional to the distance S, therefore the larger the distance, the greater the lag time.
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when the sun and moon are in a line with the earth, the: group of answer choices arrival of high tide will be delayed. gravitati
Alecsey [184]

When the sun, moon, and Earth are lined up (during a new or full moon), the solar tide adds to the lunar tide to produce extremely high  tides and very low tides, both of which are known as spring tides.

  • Basically describes a situation in astronomy where three celestial bodies align in a straight line as part of a gravitational system. The phrase is frequently used to describe how the Sun, Moon, and Earth are in a straight line.
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8 0
1 year ago
A scuba diver's tank contains 0.240 kg of o2 compressed into a volume of 3.10 l. what volume (in liters) would this oxygen occup
ohaa [14]
Given:
m = 0.240 kg = 240 g, the mass of O₂
V = 3.10 L = 3.10 x 10⁻³ m³, the volume

Because the molar mass of oxygen is 16, the number of moles of O₂ is
n = (240 g)/(2*16 g/mol) =  7.5 mol

As an ideal gas,
p*V = nRT
or
V = (nRT)/p
where R = 8.314 J/(mol-K)

When
p = 0.910 atm = (0.910 atm) * (101325Pa/atm) = 92205.75 Pa
T = 27 °C = (27 + 273) K = 300 K
then the volume is
V= \frac{(7.5 \, mol)*(8.314 \, J/(mol-K))*(300 \, K)}{(92205.75 \, Pa)} =0.2029 \, m^{3}

V = (0.2029 m³)*(10³ L/m³) = 202.9 L

Answer: 203 liters
3 0
3 years ago
Which lists the evidense to varify a chemical change occurred instaed of a phicical change
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?do you have a picture of the options orr ?

Explanation:

4 0
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1. Identify this mystery element: I am very reactive, I desperately want to get rid of my electron. When I make a compound with
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8 0
3 years ago
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How long would it take for a car to travel 200 km if it has an average speed of 55 km hr?
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Answer:

3.63 hours or 3 and 37.5 minutes

Explanation:

200/55

Hope this helps :)

6 0
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