Answer:
The fraction of the ball's kinetic energy stored in the spring is 3.6KJoules
Explanation:
Given
Mass of ball =0.5kg
Velocity of ball =120m/s
The kinetic energy stored by the ball is expressed as
K.E=1/2(m*v²)
Substituting our data into the expression we have
K. E=(0.5*120²)/2
K. E=7200/2
K.E=3,600 JOULE
K.E=3.6KiloJoules
Please see below solution:
The electric field just outside its surface is
=
2
,
where is a radius of sphere, is a charge of sphere, =
1
4ε0
.
The electric field is
=
1
4ε0
2 =
1
ε0
∙
=
σ
ε0
,
where = 4
2
is an area of sphere, σ =
Q
S
is a surface charge density.
Answer:
.
All 50 states have a 21 year old minimum drinking age according to the national drinking age act of 1984.
the father has to sit 0.5meter away from the kid because he is a 3/4 heavier that the kid