Answer:
Explanation:
Denote average speed by 
where 
is total distance travelled and 
is time.
Plugging in given values, we get:
.
Answer:
The value is 
Explanation:
From the question we are told that
The radius of the conductor is 
The current it is carrying is 
The electric field is 
Generally the resistivity of the material is mathematically represented as
Here A is the area of the conductor which is mathematically represented as
=> 
=> 
So
=>
Answer:
C. reflection
Explanation:
reflection occurs when a wave strikes an object and bounces off of it
Cuz force is equal to mass times acceleration, so the greater the mass the greater the force.
1. Hitting a baseball is a great example of an elastic collision because there is a complete conservation of kinetic energy; some of the energy of the bat is imparted onto the ball, and the system energy remains the same. Conversely, when a ball is caught in a glove, that is a perfectly inelastic collision: the kinetic energy of the system is completely absorbed into the glove.
2. Another example of a completely elastic collision would be someone jumping onto a trampoline: they bounce back up with the same amount of energy with which they began (albeit in the opposite direction).
3. An example of a perfectly inelastic collision would be someone jumping into a foam pit: the foam absorbs all of the kinetic energy of the jumper and none of it is conserved.
