Answer:
The avarage power of the body is 96.898 watts.
Explanation:
We must notice that given definition of power implies a constant consumption of energy, so that we should assume that energy consumption is constant. A Calorie is equal to 4186 joules. If we know that
and
, the power of body, measured in watts, is:


The avarage power of the body is 96.898 watts.
Solution :
Let us consider the Gaussian surface that is in the form of a cylinder having a radius of r and a length of A which is
.
The charged enclosed by the cylinder is given by,
(here, V =
is the volume of the cylinder)
If
is positive, then the electric field lines moves in the radial outward direction and is normal to Gaussian surface which is distributed uniformly.
Therefore, total flux through Gaussian cylinder is :


Now using Gauss' law, we get

or 
Therefore, the electric field is 
Hence, option (d) is correct.
Answer:
Density = 3 kg/m³
Explanation:
Given the following data;
Volume = 3m³
Mass = 9 kg
To find the density;
Density can be defined as mass all over the volume of an object.
Simply stated, density is mass per unit volume of an object.
Mathematically, density is given by the formula;

Substituting into the formula, we have;

Density = 3 kg/m³
Answer:
If it has a mass of 5 kg its weight is 5 kg * 9.8 m/s^2 = 49 N
Weight in air = 49 N
Weight in water = 25 N
Buoyant force provided by water = 49 - 25 = 24 N
Answer: There are 9 molecules.
Explanation: 3H2O has 6 hydrogen atoms and 3 oxygen atoms. Heres a diagram.
HHO + HHO + HHO = 3H2O