Models help us to understand systems and their properties
Answer:
(D) energy from one place to another
Every atom with 15 protons in its nucleus
is an atom of Phosphorus.
Explanation:
Let yellow ball be m1 = 0.5kg with u1 = 8 m/s and blue ball be m2 = 0.25 kg with u2 = - 4 m /s respectively.
After collision, blue ball travels 12 m/s.
<u>Using conservation of Linear Momentum</u> :
m1u1 + m2u2 = m1v1 + m2v2
0.5* 8 + 0.25 * - 4 = 0.5 * v1 + 0.25 * 12
v1 = 0 m/sec i.e. <u>Yellow ball comes to rest</u>.
Answer:
total kinetic energy is 8 ×
J
Explanation:
given data
potential difference = 5 V
e = 1.60 ×
C
to find out
what is kinetic energy
solution
we will apply here conservation of energy that is
change in potential energy is equal to change in kinetic energy
so
change potential energy is e × potential difference
change potential energy = 1.60 ×
× 5
change potential energy = 8 ×
J
so change in kinetic energy = 8 ×
J
and we know proton start from rest that mean ( kinetic energy is 0 ) so
change in KE is total KE
total kinetic energy is 8 ×
J