Answer:
Assuming air resistance is negligible, all of the potential energy that the object has at the top of the ramp is converted into kinetic energy by the time it gets to the bottom of the ramp. This is because no matter what path the object takes to move the 5m vertically (ie. falling straight down v. sliding on the ramp), gravity does the same amount of work on it.
Thus, calculate the total amount of potential energy at the top of the ramp:
Ep=mgh
Ep=4(9.81)5
Ep=196.2 Joules
Because all of this potential energy is converted into kinetic energy in the object by the bottom of the ramp, the object hits the spring with 196.2J of energy.
By using the formula for elastic potential energy, you can calculate exactly how far the spring compresses.
196.2=(1/2)k(x^2)
392.4=(350)(x^2)
1.1211=x^2
sqrt(1.1211)=x
x=1.059m
As for the last part of the question, after the object compresses the spring fully and stops momentarily, the spring converts it's elastic potential energy back into kinetic energy in the object and pushes it away again.
Explanation:
Answer:A
Explanation:
Since the bucket of water is constantly in motion it implies a force must be acting on it which allows it to change its Position constantly.
A constant gravity Force must be acting on water . In addition to gravity force a centripetal force must be acting on the water inside the bucket.
Bucket must move with certain velocity in order to avoid spilling of water.
Answer:
900 kg/m³
Explanation:
There are two forces on the object: weight and buoyancy.
Newton's second law:
∑F = ma
B − W = 0
B = W
Weight is mass times gravity:
W = m₀ g
Mass is density times volume:
W = ρ₀ V₀ g
Buoyancy force is equal to the weight of displaced fluid:
B = ρ V g
Therefore:
ρ V g = ρ₀ V₀ g
ρ V = ρ₀ V₀
ρ₀ = ρ V / V₀
One quarter of the object's volume is above the liquid, which means three quarters of its volume is below the surface.
Given that V = ¾ V₀ and ρ = 1200 kg/m³:
ρ₀ = 1200 (3/4)
ρ₀ = 900 kg/m³
Background: Nuclear energy can be used for various industrial applications, such as seawater desalination, hydrogen production, district heating or cooling, the extraction of tertiary oil resources and process heat applications such as cogeneration, coal to liquids conversion and assistance in the synthesis of chemical ...
Answer:
36.82304 N
Explanation:
k = Coulomb's constant = 
e = Charge of electron = 
m = Mass of alpha particles = 
Charge on alpha particle is given by
The force is given by
The force between the two alpha particles are 36.82304 N
Acceleration is given by
Magnitude of the acceleration of the alpha particles due to this force is given by
