Explanation :
First considering Sid's statements, the description of tangential speed and centripetal acceleration are correct.
But for Centripetal force, the description is incorrect because centripetal force is always perpendicular to the velocity.
Sid's error can be corrected by the statement (b) i.e. "Centripetal force is perpendicular to the velocity of the satellite".
The equation for Kc:
Kc = [C]² / [A] [B]
Let the equilibrium concentration of C be x
Then,
the equilibrium concentration of A = 1-x
the equilibrium concentration of B = 1-x
The equation becomes:
4 = x² / (1 - x)²
3x² - 8x + 4 = 0
x = 2, x = 2/3
The first answer is not possible so x = 2/3
[A] = 1 - 2/3 = 1/3
[B] = 1 - 2/3 = 1/3
<u>Answer:
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Average speed, over the first 4.0 s of its motion, of a pebble released from rest off a bridge = 19.6 m/s
<u>Explanation:
</u>
We have equation of motion , , s is the displacement, u is the initial velocity, a is the acceleration and t is the time.
In this case the initial velocity of body = 0 m/s, acceleration = 9.8 , we need to calculate displacement when t = 4 seconds.
Substituting
So a distance of 78.4 meter has been traveled by pebble in 4 seconds.
Average speed = 78.4/4 = 19.6 m/s
Answer:
The maximum electric field strength is
Explanation:
Substitute 4.0 cm for D
r = D / 2
r = 4 / 2 = 2cm
= 2 × 10⁻²m
Now, according to the question, the expression for the magnetic field is as follows:
B = 10T + 2T sin(2π(10Hz) t )
Now, calculate
Therefore, the electric field expression is as follows:
Substitute 0 for t in the above equation
Now substitute 1.5 cm for r in the above equation
The maximum electric field strength is