The answer is slows objects down.
I believe it is the mass of an object. The question is oddly asked
P=E/t
E=67,500J
t=45s
P=?
P=67,500/0.45
= 150000W
Answer:
f = 96.56 Hz
Explanation:
A soda bottle can be simulated by a system of a tube with one end open and the other closed. In this case at the closed end we have a node and at the open end a maximum, so the wavelength is
λ = 4L / n
where n = 1, 3, 5, ...
for our case the speed of sound is
v = λ f
we substitute
f / v = 4L / n
calculate
290 / (340 4) = L / n
0.213 = L / n
In the exercise the value of n is not indicated, but we can assume that it is the fundamental answer, therefore n = 1
L = 0.213 m
now we can calculate the frequency of the following resonance n = 3
f = 4L v / n
f = 4 0.213 340/3
f = 96.56 Hz
Answer:
E = 0.93 10⁻⁶ N/C, 24º NorthEast
Explanation:
The electric force is related to the electric field by the relation
F = q E
where the bold letters indicate vectors and q is a scalar electric charge.
Using this equation the electric force is in the same direction as the electric field.
The magnitude of the field is
E = F / q
the charge they give us is q = 8.7 C
let's calculate
E = 8.1 10⁻⁶ / 8.7
E = 0.93 10⁻⁶ N / C
In summary, the magnitude of the electric field is E = 0.93 10⁻⁶ N/C and its direction is 24º NorthEast