Answer:
(in the same way that a faster runner overtakes a slower runner in an outside lane, the outer planet), it exhibits retrograde motion. True
Explanation:
The retrograde movement is the apparent movement of the planets in the opposite direction to the usual one. Retrograde motion is a projection effect because the Earth moves at a different speed than the other planets. The Greeks tried to explain it by proposing epicyclic movements. The apparent retrograde movement of Mars as seen from Earth is an illusion, produced by the combined effects of the orbital movement of the two planets. The retrograde rotation of Venus is real.
(a) The final velocity if the trucks lock together after the collision is 7.66 m/s.
(b) The decrease in the kinetic energy after the collision is 11,165.1 J.
<h3>
Conservation of linear momentum</h3>
The final velocity of the two truck system after the collision is determined by applying the principle of conservation of linear momentum as shown below;
m₁u₁ + m₂u₂ = v(m₁ + m₂)
4285(9.35) + 5495(6.35) = v(4285 + 5495)
74,958 = 9,780v
v = 74,958/9780
v = 7.66 m/s
<h3>Initial kinetic energy of the trucks</h3>
K.E = ¹/₂mv²
K.Ei = ¹/₂(4285)(9.35)² + ¹/₂(5495)(6.35)²
K.Ei = 298,088.78 J
<h3>Final kinetic energy of the trucks</h3>
K.Ef = ¹/₂(m₁ + m₂)v²
K.Ef = ¹/₂(4285 + 5495)(7.66)²
K.Ef = 286,923.68 J
<h3>Change in kinetic energy</h3>
ΔK.E = K.Ef - K.Ei
ΔK.E = 286,923.68 J - 298,088.78 J
ΔK.E = - 11,165.1 J
Learn more about linear momentum here: brainly.com/question/7538238
The answer is, "the speed of the current is 5 miles per hour."
To calculate the speed of the current,
let's assume speed of current = xmph. Time taken to travel from one pier to another with the current = 100/(20+x)h
But the time taken to travel from one pier to another with the current, which is given is = 4 hours. So, 4=100/(20+x) 80+4x = 100
4x = 20
x = 5 Thus, the speed of the current is 5 miles per hour.
Answer:
Because it's used to find definite solutions to More complex quantum mechanical system. Harmonic oscillator helps in determining motion of small mass if strings.
Explanation:
The particle box is very precise when using it to calculate or find definite solutions in complex quantum mechanics in which particles might be trapped in a regions of electric potentials. Since we're dealing with electric potentials here, the harmonic oscillator is needed because it has to do squarely wit potential energy which is given as
V(x) = 0.5kx²
Where k is force constant and x is distance.
Answer:
the answer is 49ft/s
Explanation:
if you look for the equations of uniformly accelerated motion you find the following
Vo=Vf-AT
Where
Vo=initial speed
Vf=final speed
A=aceleration
T=time
you replace and it's all
Vo=55-2x3
Vo=49ft/s
