If the sentence is correct then write true. If not then write false and change the underlined word. For example #1, it says balanced forces DO NOT change the motion of an object. Is it true? If so write try on the line. If it’s not correct then write false on the line and change “do not” to “does”
Insulators do not allow electrons to move easily through them.
Answer:
a. 3/4λ
d. 1/4λ
Explanation:
When the wavelength of the sound waves is λ and the two waves are having same frequency the waves are said to be out of phase if their phase difference is in the multiples of or 180°.
When the two waves are out of phase then their opposite maxima coincide at the same time resulting in the minimum amplitude of the resulting wave throughout.
- As we observe from the schematic that the a wave has sinusoidal pattern of variation and we get a maxima after each of the distance.
- Here we have two speakers out of phase therefore on shifting one of the speakers by the odd multiples of we have the maxima or the extreme amplitudes.
So, we must place the microphone at 3/4λ and 1/4λ to pickup the loudest sound.
Answer: Average acceleration is -2.407
Explanation:
Average acceleration is equal to change in velocity divided by time taken
therefore,
=>
Answer:
No
Explanation:
Because the people put in charge of defining SI units said so