Answer:
A time that is less than half an hour
Explanation:
it says velocity is positive so it would yield to a negative acceleration
Asalam a lekum my brother
Answer:
a) 
b) T = 720.85N
Explanation:
With a balance of energy from the lowest point to its maximum height:

Solving for
:


Centripetal acceleration is:



To calculate the tension of the rope, we make a sum of forces:

Solving for T:

T = 720.85N
Answer:
515 nm
Explanation:
The equation that gives the position of the maxima (bright fringes) in the interference pattern produced on a distant screen by the diffraction of light through two slits is

where
y is the distance of the maximum (bright fringe) from the central maximum
m is the order of the maximum
is the wavelength of the light used
D is the distance of the screen
d is the separation between the slits
In this problem we have:
is the separation between the slits
D = 3.30 m is the distance of the screen
m = 1 (we are analyzing the 1st bright fringe)
is the distance of the 1st bright fringe from the central maximum
Solving for
, we find the wavelength of the light used:
