Answer:
b) 252 Hz or 260 Hz
c) 0.25 s
Explanation:
b) The frequency of the beats is 4 Hz, and one tuning fork has a frequency of 256 Hz. Therefore, the second tuning fork is either 4 Hz lower or 4 Hz higher.
f = 252 Hz or 260 Hz
c) Period is the inverse of frequency.
T = 1/f
T = 1 / (4 Hz)
T = 0.25 s
A method to prove if the statement is true is by trial and error method. Since we are already given different sets of values, we can try to see if they match the given conditions: (consecutive, odd integers):
Looking at the choices:
A. consecutive odd integers (OK)
(-7) + (-9) + (-11) = -27
Since the integers in choice A match the statement, then choice A is the correct answer.
Answer:
because the car is broken.
Explanation:
The only force acting on the ball, once it left the hand of the player, is the gravitational atraction of the earth. Once the ball reaches its maximum height, it starts a free fall movement under the action of earth's gravity.
Then the magnitude of the acceleration of the ball is the gravitational acceleration, g, approximatley 9.8 m/s^2