1. The spring is storing
1/2 (240 N/m) (0.40 m)² = 19.2 J ≈ 19 J
of potential energy.
2. When the spring is compressed by 0.30 m, it is storing
1/2 (240 N/m) (0.30 m)² = 10.8 J
so there was a loss of 19.2 J - 10.8 J = 8.4 J.
3. The spring is storing
1/2 (150 N/m) (0.80 m)² = 48 J
of potential energy.
4. Stretching the spring by 0.20 m more has it storing
1/2 (150 N/m) (1.0 m)² = 75 J
so that the extra weight adds 75 J - 48 J = 27 J of energy.
Answer:
0.26 m
Explanation:
θ = Angle at which the jumper launched
g = Acceleration due to gravity = 9.8 m/s²
R = Range = 8.95 m
v = Velocity of the jumper = 9.5 m/s
Range of projectile
When, θ = 45° maximum range is obtained
sin(2×45) = sin90 = 1
Maximum range
So, Mike Powell jumped 9.21-8.95 = 0.26 m less than the maximum range if launched at the same speed.
Ability to propagate in the space (where is no medium).
Refraction probably too.
Answer:
Explanation:
Sphere B and sphere A are touching so they will act as a single body . A positively charged sphere C is brought near sphere B . So there will be induction of charge on sphere B and sphere A . Opposite charge will be induced on nearer sphere and same charge will be induced on distant sphere . Hence sphere B will be negatively charged and sphere A will be positively charged. The amount of charge induced on sphere B and A will be same and it will remain as long as sphere C is kept near sphere B . As soon as sphere C is removed , induced charges will also neutralize each other .
Another name for the interstellar matter that will eventually form a star is a protostar or nebula. It is defined as a cloud of gas and dust in outer space, visible in the night sky either as an indistinct bright patch or as a dark silhouette against other luminous matter. It is <span>an interstellar cloud of dust, hydrogen, helium and other ionized gases. </span>