Answer:
The time it will take to cook three hot dogs simultaneously is 2.5 minutes
Explanation:
Here we have, the Energy of electric heating given by Joule heating that is;
P = IV = 120×10 = 1200 J/s = 1.2 kJ/s
Since the energy required to cook one hotdog = 60.0 kJ we have
Energy required to cook three hot dogs = 3 × 60.0 kJ = 180.0 kJ
Therefore, the time required to cook the three hot dogs is
(180.0 kJ)/(1.2 kJ/s) = 150 s
The time it takes to cook three hot dogs simultaneously is
150 seconds or 150/60 minutes which is 2 minutes 30 seconds or 2.5 minutes
We use the equation:
g = G m / r2
where
<span>G=constant universal gravitational = 6.67 x 10^-11 n m^2/kg^2 </span>
<span>m=planet mass=5.9736 x 10^24 kg (twice=11.9472) </span>
<span>r radium planet=6.372 km (twice=12.744)
</span>
<span>g= 6.67 x 10^-11 n m^2/kg^2 x 11.9472 10^24 kg/(12.744.000m)^2 </span>
<span>g=4.90 m/s^2 (1/2 of Earth gravity) <------- second option</span>
Answer:
In chemistry and physics, a valence electron is an outer shell electron with an atom, and that can participate in the formation of a chemical bond if the outer shell is not closed; in a single covalent bond, both atoms in the bond contribute one valence electron in order to form a shared pair.
Explanation:
1.5 with 8 exponent of 10.
1.5 x 100000000
150000000
