Explanation:
We have,
Electric field intensity is 700 N/Cj
It is required to find the magnitude and direction of the acceleration of this electron due to this field.
The electric force is balanced by the force due to its motion i.e.
qE =ma
a is acceleration of this electron
So, the acceleration of the electron is and it is moving in +y direction.
Answer:
0.55 s
Explanation:
From the question given above, the following data were obtained:
Height (h) = 1.5 m
Horizontal velocity (v) = 25 m/s
Time of flight (t) =?
The time of flight of the potato talks about the total time spent by the potato in the air i.e the time taken for the potato to get to the ground..
Thus, we can obtain the time of flight of the potato as illustrated below:
Height (h) = 1.5 m
Acceleration due to gravity (g) = 9.8 m/s²
Time of flight (t) =?
H = ½gt²
1.5 = ½ × 9.8 × t²
1.5 = 4.9 × t²
Divide both side by 4.9
t² = 1.5 / 4.9
Take the square root of both side
t = √(1.5 / 4.9)
t = 0.55 s
Thus, the time of flight is 0.55 s
F=ma
f= 66 x 2
The answer is f = 132 N
You get it by
F=ma
F=66 X 2
Answer:
0.68 m
Explanation:
We know that the speed of sound in air is a product of frequency and wavelength. Taking speed of sound in air as 340 m/s
V=frequency*wavelength
Then wavelength is given by 350/500=0.68 m
Therefore, to repeat constructive interference at the listener's ear, a distance of 0.68 m is needed