A squirrel, a train, a bird, and a car are all traveling at the same velocity. Which object has the greatest amount of kinetic e
2 answers:
Explanation:
Kinetic energy is the energy acquired due to the motion of an object.
Mathematically, kinetic energy =
where m = mass
v = velocity
Therefore, kinetic energy depends on the mass and square of velocity. Hence, more is the mass of an object more will be its velocity.
Thus, we can conclude that out of the given options, train will have more mass as compared to other objects, therefore, train will have highest kinetic energy.
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Answer:
Ep = 3924 [J]
Explanation:
To calculate this value we must use the definition of potential energy which tells us that it is the product of mass by the acceleration of gravity by height.
where:
Ep = potential energy [J] (units of Joules)
m = mass = 40 [kg]
g = gravity acceleration = 9.81 [m/s²]
h = elevation = 10 [m]
Answer:
Explanation:
The electric field produced by a single point charge is given by:
where
k is the Coulomb's constant
q is the charge
r is the distance from the charge
In this problem, we have
E = 1.0 N/C (magnitude of the electric field)
r = 1.0 m (distance from the charge)
Solving the equation for q, we find the charge: