C) Staring At Someone's Body, Giving Them The “Once Over”
<u>Answer: </u>
The biggest economic problem today is the limitation of resources.
<u>Explanation:</u>
Economics is the study of production and distribution of resources and Scarcity means the limitations of the resources. It happens in all the economies no matter how successful these are.
It is the basic economic problem that makes people distribute and use resources wisely. The inadequacy of the goods makes people choose and allocate resources efficiently in order to fulfill the needs of life.
Answer:
False
Explanation:
This statement is negates the photoelectric effect.
When an electron absorbs energy it jumps from a lower shell to a higher shell. When the electron releases energy it jumps from a higher shell to a lower shell.
The Kinetic energy of an ejected electron is
Where,
h = Planck's Constant
f = Frequency of incident photon
= Work function
So, this statement is false.
Answer:
Earth's crust, called the lithosphere, consists of 15 to 20 moving tectonic plates. The heat from radioactive processes within the planet's interior causes the plates to move, sometimes toward and sometimes away from each other. This movement is called plate motion, or tectonic shift.
beainliest?
Answer:
<em>The average speed is 22.2 km/h</em>
Explanation:
<u>Average Speed</u>
Given an object travels a total distance d and took a total time t, then the average speed is:
The mailman first drives d1=7 km at v1=15 km/h. The time taken to drive is:
Then he drives d2=7 km at v2=43 km/h taking a time of:
The total time is
t=0.467 h + 0.163 h = 0.63 h
The total distance is
d = 7 km + 7 km = 14 km
The average speed is:
The average speed is 22.2 km/h