It’s related to sound frequency! Hope this helps!
Answer:
The Force between the two charges is an attractive force of 16,000N
Explanation:
Expression for the electric force between the two charges is given by
F = (k*q1*q2) / r^2
Here, k = constant = 9 x 10^9 N*m^2 / C^2
q1 = - 2.0x10^-4C
q2 = + 8.0x10^-4C
r = 0.30 m
Substitute the given values in the above expression -
One charge is + and the other is a -, therefore the net force is an attractive force (opposites atract)
The attraction force is:
F= 9.0x10^9 * 2.0x10^-4 *8.0x10^-4 N/ 0.30^2
F= 16,000N
COMPLETE QUESTION:
Phileas is going on a hot air balloon ride. His height above the ground
after t minutes is a quadratic function of t.
He begins from a platform at a height of 76 meters.
The balloon reaches its maximum height after 30 minutes.
After 80 minutes, he finally lands (at a height of 0 meters)
(a) Give a function f(t) for Phileas’s height above the ground after t minutes.
Answer:
f(t) = (-76/160)t² + (9560/1600)t + 76
Explanation:
Clearly explained in the attachment below
Answer: 4 herz is the correct answer trust me!!!!!
Explanation:
Answer: E) Acceleration, net force
Explanation: In order to explain this problem we have to consirer that the uniform circulat motion has constant angular velocity (ω) and the vector velocity is changed its direction for any point that cover the circle but its modulus is contant and its value is v=ω*R. In order to ensure these conditions, the net force also the accelaration called centripetal must point to the center of the circular trajectory.