A tsunami, an ocean wave generated by an earthquake, propagates along the open ocean at 700 km/hr and has a wavelength of 750 km
1 answer:
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If we have the angle and magnitude of a vector A we can find its Cartesian components using the following formula
Where | A | is the magnitude of the vector and is the angle that it forms with the x axis in the opposite direction to the hands of the clock.
In this problem we know the value of Ax and Ay and we need the angle .
Vector A is in the 4th quadrant
So:
So:
So:
= -47.28 ° +360° = 313 °
= 313 °
Option 4.
The final common speed of the two carts will be 69.3 m/sec.The momentum conservation principle is applied.
<h3>What is the law of conservation of momentum?</h3>According to the law of conservation of momentum, the momentum of the body before the collision is always equal to the momentum of the body after the collision.
Unit conversion:
1 metric tons = 1000 kg
Given data;
m₁= 11.6 metric ton =11600 kg
m₂ = 23.2 metric ton = 23200 kg
Let v represent the combined velocity of the two carts once they are connected, and let u represent the starting velocity of cart 1 when it reaches the bottom.
Considering energy conservation;
From the conservation of momentum principle;
Hence, the final common speed of the two carts will be 69.3 m/sec.
To learn more about the law of conservation of momentum refer;
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Answer: The amount of Zn plated from a solution is 1.07× grams.
Explanation: In this question, it is given that of 317.7 coulombs was used in an electrolytic cell, i.e,
The amount of charge = 317.7 coulombs
The amount of charge of 1 mole of electrons = 96485.3 coulombs ( FARADAY’S CONSTANT )
Now, the number of electrons = amount of charge given / charge of 1 mole of electrons
The number of electrons = =
×
According to reaction occurring, 2 moles of electrons are required to convert 1 mole of to Zn which is plated on the electron, so the moles of Zn plated will be half the moles of electrons, i.e.,
= 1.645×
Now, we know that the molar mass of zinc is 65.38gm/mole,
Number of moles = mass in grams / molar mass
Mass in grams = number of moles × molar mass
Mass in grams = (1.645×) × 65.38 = 0.1075 gm.
Conclusion: It concludes that the amount of Zn plated from a 1.07× solution is gm.