Answer:
Explanation:
It is required that the weight of Joe must prevent Simon from being pulled down . That means he is not slipping down but tends to be towed down . So in equilibrium , force of friction will act in upward direction on Simon.
Let in equilibrium , tension in rope be T
For balancing Joe
T = M g
For balancing Simon
friction + T = mgsinθ
μmgcosθ+T = mgsinθ
μmgcosθ+Mg = mgsinθ
M = (msinθ - μmcosθ)
M = m(sinθ - μcosθ)
The hotter molecules become, the faster they move around. The colder they are, the more slow and lethargic they are
Answer:
it is because it do not produce smoke like fuel from wood.
Answer:
A
Explanation:
the answers are all not good, but I would say A is the best
The magnetic field between the poles of the horseshoe magnet in fig 21.4 B curves in the <u>counter clockwise direction.</u>
The magnetic field lines due to a straight current carrying conductor is given by the right hand thumb rule. This rule is stated as follows: Imagine holding the current carrying conductor in your right hand with the thumb pointing in the direction of current, then the direction in which your fingers curve around the wire gives the direction of the magnetic field lines. The direction of the magnetic field lines at a point gives the direction of magnetic field at that point.
On applying this rule, it can be seen that the magnetic field due to the conductor shown in Fig 21.4 B curves in the counter clockwise direction.
