Answer:
The compression in the spring is 9.64 meters.
Explanation:
Given that,
Mass of the train, m = 6251 kg
Speed of the train, v = 27 m/s
Spring constant of the spring, k = 48979 N/m
We need to find the compression in the spring when it comes to rest. It is a case of conservation of energy. The kinetic energy of the train is converted to elastic potential energy. So,
x is compression in spring
So, the compression in the spring is 9.64 meters.
Answer:
it would be the cord will have the most energy at the moment.
Explanation:
...
The heat of combustion<span> is the total energy released as </span>heat<span> when a substance undergoes complete </span>combustion<span> with oxygen under standard conditions. The chemical reaction is typically a hydrocarbon or other organic molecule reacting with oxygen to form carbon dioxide and water and release </span>heat<span>.
According to </span><span>Wikipedia :)</span>
Answer:
θ = 45º
Explanation:
To find the solution, let's use the projectile launch equation
R = vo² sin 2θ / g
Where vo is the initial speed of the dolphin, T is the angle of the jump and g the gravity acceleration.
To obtain a maximum range, the sine T function must be 1,
sin 2θ = 1
2θ = sin⁻¹ 1
2θ = 90
θ = 45º
Therefore, the dolphin should jump at an angle of 45º from the horizontal
Answer:C
Explanation: I studied, and C is correct