Answer:
Work occurs when a force causes an object to be displaced.
Explanation:
- When any force acts on a body, and there is a displacement, work is said to be done.
- Work done is equal to the product of the force on the body and the displacement caused by it.
- The change in the energy of the system is due the work done.
- Three thing that help determine the work done on an object are the force acting on it, the displacement caused by it and the cause of the displacement.
Answer:
koh
Explanation:
it is a basic substance that reacts with the lipids on your fingers, as soon as you touch it, to form soap
Answer:
a)
b)
Explanation:
Apparent frequency of the siren is given as
as we know that the wavelength will remain the same as it is having originally
sowe know
a) Now when wind is blowing from source to official
so we have
so we have
b) Now when wind is from official to source
so we have
so we have
It is important to properly balance a centrifuge because an unbalanced machine can damage the rotor, cause catastrophic damage to the machine itself, or even injure or kill lab personnel working in the room. Balancing a centrifuge involves spreading the weight of the samples across the entire rotor.
