Average Acceleration = (change in speed) / (time for the change)
Change in speed = (ending speed) - (starting speed)
= 15 m/s - 24 m/s = -9 m/s
Acceleration = (-9 m/s) / (12 sec) = - 0.75 m/s² .
Answer:
Any Lens
Explanation:
I Hope it's right if not so Sorry :)
Answer with Explanation:
We are given that
Momentum of photon=
a. We have to find the energy of this photon.
Speed of photon=
We know that
Momentum=p=
Where
h=
J-s=Plank's constant
Wavelength of photon


m


J
Hence, the energy of photon=
J
B.Energy of photon in electron volt=
Energy of photon=
C.Wavelength of photon =
Answer: 12 N to the right
Explanation:
If we calculate the net force acting on the box, we will have:
<u>In y-component:</u>
(1)
Where
is the Normal force, directed upwards and
is the weight of the box (gravity force), directed downwards.
(2)
(3) Hence the net force in the vertical component is zero
<u>In x-component:</u>
(4)
Where
and
(5)
(6) This is the net force in the horizontal component
Therefore, the total net force acting on the box is 12 N directed to the right