Answer:
Explanation:
Given
mass of ball is m
initial velocity of ball is
Final velocity of ball is
Impulse is the change in momentum of an object when an external force is applied for a given interval of time.
Initial momentum
Final momentum
Thirty beats are heard in one minute when two notes are played together. If the higher note has a frequency of 740 Hz, what is t
1 answer:
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Answer:
The charge stored in a parallel plate capacitor is proportional to the potential, and capacitance across the plates.
Explanation:
The capacitance of a parallel plate capacitor is given by:
where
Q is the charge stored
V is the potential difference across the capacitor
Re-arranging the formula, we get
From this expression, we see that the charge stored (Q) is proportional to both the potential (V) and the capacitance (C).
Answer:
Graph B represents correct graph for velocity time
Explanation:
Initially the object is dropped under the influence of constant force due to gravity
So here we can say its acceleration is constant due to gravity
hence here the velocity will increase downwards due to gravity and it is given as
now when it enters into the pool an upward force of same magnitude will act on it
so net force on it is
so here we will have no acceleration and it will move with constant speed after that
so here correct graph is
Graph B