1. Two balloons are charged with an identical quantity and type of charge: -6.25C. They are held apart at a separation distance
1 answer:
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Answer:
3
Explanation:
-The formula for kinetic energy is the following:
K.E.=m
where:
K.E. is kinetic energy
m is mass
v is velocity
Here we can see that kinetic energy is proportional to the velocity squared, so if the speed or velocity of the scooter doubles then this would quadruple its kinetic energy.
-The acceleration is the rate of change of velocity per unit of time. A scooter could double its speed with a constant acceleration, so an increase in speed doesn't necessarily mean an increase in acceleration.
-The formula for momentum is the following:
p=mv
where:
p is momentum
m is the mass of the object
v is the objects velocity
Here we can see that the momentum is directly proportional to the velocity, so if the scooter where to double its velocity then it would also double its momentum.
Answer:
The correct answer is:
(A) to the left
(B) at speed -0.8725 m/s
Explanation:
The given values are:
Plate 1:
Mass,
m₁ = 201 g
Velocity,
v₁ = +1.79 m/s
Plate 2:
Mass,
m₁ = 335 g
Velocity,
v₁ = -2.47 m/s
According to the conservation of momentum, we get
⇒
then,
⇒
On substituting the values, we get
⇒
⇒
⇒
⇒ (to the left)
Answer:
a) , b)
Explanation:
a) The turntable has the following physical model by using Newton's laws:
The moment of inertia is:
b) The moment of inertia for a solid cylinder:
The mass of the turntable is: