As light from the sun travels to Earth much of the energy the light waves are carrying is lost before the wave reaches Earth.
2 answers:
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Answer:
B. 175 N
Explanation:
Net force can be defined as the vector sum of all the forces acting on a body or an object i.e the sum of all forces acting simultaneously on a body or an object.
Mathematically, net force is given by the formula;
Where;
Fnet is the net force
Fapp is the applied force
Fg is the force due to gravitation
In this scenario, we observed that both forces are acting in the same direction.
Therefore:
Net force = 100 N + 75 N
Net force = 175 Newton
Answer:
The velocity of mass 2m is
Explanation:
From the question w are told that
The mass of the billiard ball A is =m
The initial speed of the billiard ball A = =1 m/s
The mass of the billiard ball B is = 2 m
The initial speed of the billiard ball B = 0
Let the final speed of the billiard ball A =
Let The finial speed of the billiard ball B =
According to the law of conservation of Energy
Substituting values
Multiplying through by
According to the law of conservation of Momentum
Substituting values
Multiplying through by
making subject of the equation 2
Substituting this into equation 1
Multiplying through by