Ravens eat meat but they don’t kill it themselves. What kind of animal does this make them?
1 answer:
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Answer:
Frequency = 658 Hz
Explanation:
The third harmonics of A is,
The second harmonics of E is,
The difference in the two frequencies is,
delta_f = 1320 Hz - 1318 Hz = 2 Hz
The beat frequency between the third harmonic of A and the second harmonic of E is,
delta_f =
We have calculate the frequency of the E string when she hears four beats per second, then
delat_f = 4 Hz
Hope this helps!
Answer:
Output power = 500 KW
Explanation:
Given the following data;
Efficiency = 20%
Input power = 2500 KW
To find the output power;
Substituting into the equation, we have;
LET Output power = OP
Cross-multiplying, we have;
Output power = 500 KW
Answer:
Approximately (assuming that
, the ball was launched from ground level, and that the drag on the ball is negligible.)
Explanation:
Let denote the velocity at which the ball was thrown upward.
If the drag (air friction) on the ball is negligible, the ball would land with a velocity of exactly . The velocity of the ball would be changed from
to
(such that
) within
.
Also because the drag on the ball is negligible, the acceleration of the ball would be . Thus:
.
Since :
.
.
The ball reaches maximum height when its velocity is . Apply the SUVAT equation
to find the displacement
between the original position (ground level, where
) and the max-height position of the ball (where
.)
.