Answer:
There are different kinds of insulation (electrical, thermal, etc.), but I'm assuming you mean thermal insulation.
Insulation should be as thick as practicable because the thicker the insulation is, the less heat loss there is.
Answer:
The best type of graph would be b. circle graph.
Explanation:
Answer:
A
Explanation:
The figure shows the electric field produced by a spherical charge distribution - this is a radial field, whose strength decreases as the inverse of the square of the distance from the centre of the charge:
More precisely, the strength of the field at a distance r from the centre of the sphere is
where k is the Coulomb's constant and Q is the charge on the sphere.
From the equation, we see that the field strength decreases as we move away from the sphere: therefore, the strength is maximum for the point closest to the sphere, which is point A.
This can also be seen from the density of field lines: in fact, the closer the field lines, the stronger the field. Point A is the point where the lines have highest density, therefore it is also the point where the field is strongest.
Answer:
Explanation:
kenetic is made for thermal things
15 = a+(3-1)d
23 = a+(7-1)d
simultaneous eqs. solve for a and d