Frequency is inversely proportional to wavelength.
Wavelength is the spacial period, and more generally the frequency is inversely proportional to the period.
If the wave's speed if c, then f=c/l where l is the wavelength.
Answer:
A 35 m/s
Explanation:
Speed of any object is scalar quantity while velocity is a vector. The scalar quantity is represented only by magnitude it doesn't need direction.
Hence, option A is correct as all other options have direction as well.
Answer:
d) When the diaphragm pushes upward, it decreases the volume of the lungs, pushing air out.
Explanation:
the relaxed diaphragm muscle is dome-shaped, the contracted muscle is horizontal.
Answer:
It's terrifying, but a relief that you know your children isn't home alone.
Explanation:
Why, it's because sometimes you don't know what is going on in the daycare. The baby/ the child you gave birth to is in the hands of a random stranger. It's also a relief knowing that at least someone is taking care of your child, or hope to be. Instead of your child, no adult supervision or any people watching your child can result in death, injuries, and more since your child is alone.
