Explanation:
Two factors influence the pressure of fluids. They are the depth of the fluid and its density. A fluid exerts more pressure at greater depths. Deeper in a fluid, all of the fluid above it results in more weight pressing down.
Answer:
(a) 13.43 N
(b) 1.62 m/s2
Explanation:
(a)Let g = 9.81 m/s2
The pushing force can be split into 2 components: 1 parallel and the other perpendicular to the floor:
- The parallel component:
- The perpendicular component:
Friction force is the product of coefficient and normal force, which consists of gravity and the perpendicular pushing force
(b) Horizontally speaking, the net force acting on the block is the parallel force subtracted by friction
The block acceleration according to Newton's 2nd law is
The given question is incomplete as the options are not provided. The correct options for this questions are as follows-
(1) Good heat conductivity
(2) Good electrical conductivity
(3) Low melting point
(4) High melting point
Thus, the question now is solved below as:
Answer:
Option (3)
Explanation:
Molecular substances are simply defined as those substances that are comprised of more than two atoms and are interlinked with one another. These atoms are linked with each other by the weaker intermolecular forces. This weak bond reflects the low and high melting point of the substance.
These molecular substances differ from the molecular compounds because, in the case of molecular compounds, the atoms are linked with one another by a strong covalent bond.
Thus, the correct answer is option (3).
Potential difference= current x resistance
so current = potential difference÷resistance
current =3÷120 (two bulbs 60+60)
current =0.025A
Answer:
second law
Explanation:
Newton's second law explains how much motion a force creates.