Answer:
In a series circuit, all components are connected end-to-end, forming a single path for current flow. In a parallel circuit, all components are connected across each other, forming exactly two sets of electrically common points
Answer with Explanation:
We are given that
Mass of adult,M=75 kg
Length of board=l=9 m
Mass of child=m=25 kg
a.Let pivot placed at point O so that the board is balanced ignoring the board's mass
Moment about the point O
Hence, the pivot placed at 2.25 m from the adult.
b.Mass of board=m''=15 kg
Center of board=
Moment about point O
Hence, the pivot point is 2.5 m from the adult.
Answer:
Positive
Explanation:
Work is defined as the product of displacement of an object produced by the applied force and the component of force along that direction. Let us consider a situation in which the angle between the applied force and the displacement produced by it is at an angle θ. Let the magnitude of displacement be s and that of the applied force be F. Now, we have to find the component of force along the direction of the displacement. For that we have to resolve the force in to two components- one along the direction of displacement and other perpendicular to it. Since the angle between force and displacement is θ, the component of force along the direction of displacement will be Fcosθ and that perpendicular to it will be Fsinθ. Thus, b the definition of work, work done = Fcosθ x s = Fscosθ.
Now, coming to our question, the force here is gravitational force of attraction which is along downward direction. It is given in the question itself that the stone is falling down. Since the displacement and the applied force is along the same direction, angle between them, θ = 0.
Thus, work done = Fscosθ = Fscos0 = Fs (since cos0 =1)
Fs > 0
Thus, the work done is positive
Answer:
The other end is called the south pole. When two magnets are brought together, the opposite poles will attract one another, but the like poles will repel one another. This is similar to electric charges. can you help me please asap Write at least 5 sentences on how you feel "War of the Worlds" will end. How will the problem of the aliens be fixed? Will Ray's son come back?