Answer:
Efinal / Einitial = 1
Explanation:
Applying Gauss´s Law to a closed spherical surface encircling the sphere of radius R, it can be showed that the electric field, at a distance r> R, behaves like all the charge of the sphere (which is distributed over the surface) were concentrated in the center, so the sphere produces the same electric field as the one created by a point charge located at that point.
The expression for the field E initial is as follows:
So, at a distance r> R, as the center of the sphere is located at the same point, the electric field will be the same as before.
The expression for E final is as follows:
So the ratio 
is equal to one.
Answer:
0.219N
Explanation:
Given data
mass= 7.3kg
acceleration= 0.03m/s^2
We know that
F=ma
substitute
F= 7.3*0.03
F= 0.219N
Hence the applied force is 0.219N
B, heat, is the correct answer. Heat is represented by a capital q in thermodynamic equations.
Answer:
C. Replacing one gas by another under the same conditions, has no effect on pressure.
Explanation:
Ideal gas:
A gas is treated as an ideal gas if temperature is high and pressure is low.
Kinetic energy for ideal gas given as
So when temperature of gas is increases then Average molecular kinetic energy will also increases.
The size of molecule is negligible as compare to the dimension of container. It mean that volume occupied by molecule is less as compare to the volume of container.
The between molecules is perfectly elastic.
Ideal gas equation
P V = m R T
So the option C is not always true.
