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Romashka-Z-Leto [24]
3 years ago
14

A ball of mass m strikes a wall perpendicularly with a speed v, and it bounces off the wall perpendicularly with a speed v 5 . W

hat is the magnitude of the impulse delivered to the wall by the ball?
Physics
1 answer:
laiz [17]3 years ago
3 0

Answer:

Explanation:

Given

mass of ball is m

initial velocity of ball is v

Final velocity of ball is v_5

Impulse is the change in momentum of an object when an external force is applied for a given interval of time.

Initial momentum P_i=mv

Final momentum P_f=mv_5

Impulse=P_f-P-i=m(v_5-v)

     

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A charge of 5.4 C experiences a force of 25.0 in an electric field. What is the strength of electric field at that point ? If th
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The strength of the electric field at that point and the force would this charge experiences at that point will be 4.587 N/C and  12.38 N.

<h3></h3><h3>What is the electric field strength?</h3>

The electric field strength is defined as the ratio of electric force to charge.

Given data;

q₁ = 5.4 C

F₁ is the electric force in case1

E is the electric field =?

F₂ is the electric force in case 2

q₂ is the charge 2

The strength of the electric field at that point is;

F₁=Eq₁

E₁=F/q₁

E₁=25.0 N / 5.4 C

E₁=4.587 N/C

The force would this charge experience at that point when the charge is 2.7 C;

F₂=Eq₂

F₂=4.587 N/C × 2.7 C

F₂ = 12.38 N

Hence the strength of the electric field at that point and the force would this charge experiences at that point will be 4.587 N/C and  12.38 N.

To learn more about the electric field strength, refer to the link;

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8 0
2 years ago
14. Three identical light bulbs are connected in series, then are disconnected and arranged in parallel. For each of the scenari
Inessa [10]
In order to make things easier to describe and explain, let's call
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a).  In series, the total resistance is 3R.
In parallel, the total resistance is R/3.
Changing from series to parallel, the total resistance of the circuit
decreases to 1/9 of its original value.

b).  In series, the total current is  V / (3R) .
In parallel, the total current is  3V / R .
Changing from series to parallel, the total current in the circuit
increases to 9 times its original value.

c).  In series, the power dissipated by the circuit is 

                                   (V) · V/3R  =  V² / 3R .

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Changing from series to parallel, the power dissipated by
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8 0
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