The light bulb... i think ...
D. the electron cloud model
(process of elimination: chocolate chip model came way before, planetary and Bohr's are the same and were developed by Niels Bohr)
Explanation:
Below is an attachment containing the solution.
Answer:
1.28 m, 14 m/s
Explanation:
At the maximum height, the velocity is 0.
Given:
a = -9.8 m/s²
v₀ = 5.00 m/s
v = 0 m/s
x₀ = 0 m
Find:
x
v² = v₀² + 2a(x - x₀)
(0 m/s)² = (5.00 m/s)² + 2(-9.8 m/s²) (x - 0 m)
x = 1.28 m
The maximum speed is at the bottom of the well.
Given:
a = -9.8 m/s²
v₀ = 5.00 m/s
x₀ = 0 m
x = -8.5 m
Find:
v
v² = v₀² + 2a(x - x₀)
v² = (5.00 m/s)² + 2(-9.8 m/s²) (-8.5 m - 0 m)
v = -13.8 m/s
Rounded to 2 sig-figs, the maximum speed is 14 m/s.
Answer:
The correct answer is
1. KE Increases, PE Increases, ME Increases
Explanation:
Here, it is essential to define the following concepts.
Kinetic energy is the energy due to motion of an object. The definition of kinetic energy is the energy to accelerate a body from rest to a given velocity. The body retains the kinetic energy as it maintains the attained velocity
KE= 1/2mv^2
From the above definition KE is increasing
Potential energy is the energy stored within a body due to its location in a position or location of higher potential
As an object moves up to higher altitude in a direction opposite to the earth's attractive force, its gravitational potential increases
PE=mgh
From the above definition PE is increasing
Mechanical energy is the sum of potential and kinetic energies that can be used to do work. It is the sum of the potential and kinetic energies stored in the body
ME = PE+KE
Since both PE and KE are increasing then ME is also increasing
