Answer:
1/ As a metal has higher melting point than a nonmetal has, we can guess that sample A is a metal.
2/ The melting point is over 1000 gradius Celcius: 1083 - it's not a low value. And as the sample conducts heat, it is not the element of period N3 in the periodic table, because elements in period 3 do not conduct electricity.
Explanation:
I can not see what the questions 2-3 in your picture is. I answered the question above the table: What can the student conclude about thenidentity of Sample A.
use F = ma
F : force m : mass a : acceleration
so
f = 5kg * 20 m/s2 = 100 N
Jovian planets are also known as gas giants and are the four outer planets Jupiter, Saturn, Uranus and Neptune. Uranus stands out from this group because of the tilt of its axis. Uranus is tilted on its side. Scientists speculate that this tilt may be as a result of a collision with a large body just after the planet was formed. Uranus is tilted 98 degrees compared to earth's 23 degrees.
Answer:
'
Explanation:
It is given that,
Mass of the plunger, 
Mass of the bullet, 
Initially both plunger and the bullet are at rest, 
Final speed of the bullet, 
Let 
is the final speed of the plunger. Using the conservation of momentum to find it. The equation is as follows :
Since,
So, the recoil velocity of the plunger is 8.19 m/s. Hence, this is the required solution.
Answer: vibrate
Explanation:
The object in air can be particular objects or substances.
Sound is actually vibration of waves through a medium. The medium can be liquid, solid or gas.
Therefore, the one word that will complete and make the sentence to make sense is ' vibrate '
