Answer:
a)
, b)
, c)
, d)
, e)
, f) 
Explanation:
a) The frequency of oscillation is:


b) The angular frequency is:



Lastly, the speed at the equilibrium position is:



c) The spring constant is:




d) The potential energy when the particle is located 38.1 % of the amplitude away from the equilibrium position is:


e) The maximum potential energy is:


The kinetic energy when the particle is located 38.1 % of the amplitude away from the equilibrium position is:



f) The speed when the particle is located 38.1 % of the amplitude away from the equilibrium position is:




It's B because when you throw something it doesn't go up it slowly descends downward
<span>Density can be calculated and found by dividing the sample's mass by its volume. D=m/v</span>
Answer:
Twice
Explanation:
From the formula for velocity in a circle
V= 2πr/T
Where V is velocity
r is raduis
T is period
We see that as r increases V increases so if r is doubled V becomes doubled
Answer:
Efficiency = 90 %
Wasted energy = 10 %
Explanation:
Since we have the input energy and useful output energy of the electric kettle, the only thing we are required to calculate here is its efficiency. This is gotten from
E = useful output energy/input energy × 100
E = 9/10 × 100 = 90 %
The percentage of wasted energy is
W = wasted energy/input energy × 100
W = 1/10 × 100
W = 10 %