Answer:
the answer is kilograms
Explanation:
you would use kilograms to measure mass.
Groups
Same number of valence electrons
Li, Na, K
Explanation:
A.
If the periodic table is not color coded, the groups of elements gives the arrangement of atoms with the same chemical properties.
All elements that are in the same group have the same chemical properties.
Periodic table groups are also called family. They are the vertical columns on the periodic table.
B.
Elements that same number of electrons in outermost shell have the same chemical properties.
The outermost shell is called the valence shell of an atom.
They are the shell containing the most loosely held electrons. Group 1 has just one electron in their outermost shell.
C.
Li Na k group 1
F Cl Br group 7
learn more:
Periodic table brainly.com/question/2014634
Groups brainly.com/question/2690837
#learnwithBrainly
Answer:
Mass of 17.854 kg is only attached to the spring
Explanation:
We have given time period in first case is 22 sec
Let initially mass is m
After 22 kg are added the period becomes 33 sec
Time period of spring mass system is
, here m is mass and k is spring constant
From the relation we can see that
Squaring both side
m = 17.584 kg
So mass of 17.854 kg is only attached to the spring
Answer:
Explanation:
from t = .3 to t = .33 , velocity appears to be uniform .
uniform velocity = .22 m /s
displacement will be area of the v-t graph which is a rectangle .
= .22 x ( .33 - .3 )
= .22 x .03
= 66 x 10⁻⁴ m
= 6.6 mm .
