Answer:
4.3 g/ cm^3
Explanation:
Mass / Volume = density . so 2150/500= 4.3 g/cm^3
Answer:
a)3000ohm
b)4.44mA
Explanation:
a) we were given a Nine tree lights connected inparallel across 120-V potential difference, since the resistor are in parallel we use the expresion below
1/R(total)= 1/R₁ + 1/R₂ + 1/R₃ + 1/R₃ +.... 1/R₉
But according to ohm'law which can be expressed below
V=IR
R=V/I
R(total)= 120/0.36
= 333.33ohm
1/R(total)= 1/R₁ + 1/R₂ + 1/R₃ + 1/R₃ +.... 1/R₉
R₁=R₂ =R₃ =R₄= R₅=R₆=R₇=R₈=R₉
1/R(total)=9/R
1/333.33= 9/R
R= 3000ohm
Therefore, the resistance is 3000ohm
b)the bulbs were connected in series here, then for series connection we use below expression
R₁=R₂ =R₃ =R₄= R₅=R₆=R₇=R₈=R₉
R(total)=9R
= 9*3000
=27000ohm
I=VR
I=V/R
I= 120/27000
= 4.44*10⁻³A
4.44mA
Therefore, the current is 4.4mA
After the supernova they either form into a Black Hole, Neutron Star or White Dwarf. Depending
I think your in the wrong section kid. This should be in Earth and Space Science.
Answer:
3.5 m
Explanation:
The wording at the end is not very clear, but I am pretty sure that the question is asking for the total distance moved from the starting point. If this is the case, the answer is found by subtracting the two vectors from each other because they are in opposite directions. This gives you 3.5 m. If the question was asking for the actual total distance moved, you would just add them together and get 14.3 m, but I don't think that is what the question is asking for. Hope this helps! :)
