Refer to the diagram shown below.
Define unit vectors along the x and y axes as respectively
Then the three successive displacements, written in component form, are respectively
The total displacement for the first leg of the trip is
Answer:
or (-0.6, 0.8)
Answer:
Part a) When collision is perfectly inelastic
Part b) When collision is perfectly elastic
Explanation:
Part a)
As we know that collision is perfectly inelastic
so here we will have
so we have
now we know that in order to complete the circle we will have
now we have
Part b)
Now we know that collision is perfectly elastic
so we will have
now we have
Answer: the pair of sunglasses
Explanation:
A good pair of sunglasses are composed of abosorbent lenses that filter the sunlight that affects the eyes retina, especially ultraviolet (UV). So, these sunglasses are used to reduce the amount of light or radiant energy transmitted.
On the other hand, normal reading glasses (in which the lens glass has not been treated to filter ultraviolet sunlight) will let UV rays pass through.
Therefore, if both glasses are exposed to sunlight, the sunglasses are expected to be warmer by absorbing that radiant energy and preventing it from reaching the eyes.
<span>65W * 8h * 3600s/h = 1.9e6 J = 447 Cal </span>
Answer:
The energy of the electron in a helium ion is 
Explanation:
Given that,
Charge = +1
Value of n = 4
Suppose 
We need to calculate the energy of the electron in a helium ion
Using formula of energy
Put the value into the formula
Hence, The energy of the electron in a helium ion is
