It is TRUE. The pivot point of a lever is called the fulcrum .
68 degrees would be the answer
Answer:
The speed is 3.87 m/s
Explanation:
The total work is equal to the change to kinetic energy:
Wtotal = ΔEk
Wspring + Wfriction = Ekf - Eki
Eki = 0
Where
k = 200 N/m
d = 10 cm = 0.1 m
fk = 0.15
m = 2 kg
g = 9.8 m/s²
vi = 4 m/s
Replacing and clearing v:
Question 2.
A transmission system at a radio station consists of essentially the following devices:
1. An oscillator, which converts a direct current into a high-frequency alternating current.
2. A transmitting antenna, which sends out radio waves having the same frequency as the current supplied by the oscillator.
3. A microphone, which picks up the sound waves and converts them into a suitable electric current with the same pattern as the sound waves.
4. A modulator, which enables the waves produced by the antenna to “carry” the pattern of the sound waves picked up by the microphone.
<span>The answer is C. Oscillator</span>
B AND C I THINK I TOOK THIS ALREADY MS
