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-Dominant- [34]
3 years ago
6

Explain in detail what causes tides and give one reason why it is important for humans to monitor tides.

Physics
2 answers:
Softa [21]3 years ago
7 0

Wishy washy is correct she helps :)

Klio2033 [76]3 years ago
3 0
The gravitational attraction to the moon causes the Earth's oceans to bulge out in the direction of the moon. Another bulge occurs on the opposite side, since the Earth itself is pulled towards the moon (and away from the water on the far side). Since the Earth rotates, this happens twice a day. These are tides.

As for the importance of monitoring tides, one reason is that commercial and recreational fishermen use their knowledge of the tides and tidal currents to help them improve their catches. Monitoring the tides is a very important part of their livelihood.
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As you stand near a railroad track, a train passes by at a speed of 31.7 m/s while sounding its horn at a frequency of 218 Hz. W
Darya [45]

Explanation:

Given that,

Frequency of train horn, f = 218 Hz

Speed of train, v_t = 31.7 m/s

The speed of sound, V = 344 m/s (say)

The speed of the observed person, V_o=0\ m/s

(a) When the train approaches you, the Doppler's effect gives the frequency as follows :

f'=f(\dfrac{V}{V-v_t})\\\\f'=218\times (\dfrac{344}{344-31.7})\\\\f'=240.12\ Hz

(b) When the train moves away from you, the Doppler's effect gives the frequency as follows :

f'=f(\dfrac{V}{V+v_t})\\\\f'=218\times (\dfrac{344}{344+31.7})\\\\f'=199.6\ Hz

Hence, this is the required solution.

6 0
4 years ago
A projectile is launched at an angle above the
erica [24]
If we neglect friction/air resistance, then the horizontal component
doesn't change, and the vertical component becomes (9.8 m/s downward)
greater each second thanks to gravity.

So, after 2 seconds, the horizontal component is still 40 m/s, and the
vertical component is (30 - 2·9.8) = 10.4 m/s upward.

Choice #1 says this.
7 0
3 years ago
A 9.76-m ladder with a mass of 22.6 kg lies flat on the ground. A painter grabs the top end of the ladder and pulls straight upw
galben [10]

Answer:

Part a)

\tau_{net} = 1397.1 Nm

Part b)

I = 702.06 kg m^2

Explanation:

Part a)

Torque on the rod is due to two forces

(i) Due to weight of the rod at mid point

(ii) Due to external force applied at the end

Now we have

\tau_{net} = FL - mg\frac{L}{2}

\tau_{net} = 254(9.76) - (22.6)(9.81)(\frac{9.76}{2})

\tau_{net} = 1397.1 Nm

Part b)

As per Newton's law we know that

\tau = I\alpha

now we have

1397.1 Nm = I(1.99 rad/s^2)

I = 702.06 kg m^2

6 0
3 years ago
Definition MRI<br> types MRI <br>explain MRI​
guajiro [1.7K]
MRI-Magnetic resonsance imaging
Look at the pic!! Hope
It helps love ❤️

5 0
3 years ago
NEED HELP TODAY
Free_Kalibri [48]

Answer:

I am pretty sure it is B My friend hope you are well

Explanation:

6 0
3 years ago
Read 2 more answers
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