Answer:
The answer to your question is: v = 121.46 m/s
Explanation:
Data
h = 30 m
vo = ?
dx = 300 m
Formula
t =
speed = distance / time
Process
t= 2.47 s
speed = 300 / 2.47
speed = v = 121.46 m/s
Stars are able to form from clouds of dust and gas because of. A) The Law of Entropy. B) The Law of Propulsion. C) The Law of Un
1 answer:
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Answer:
0.528m
Explanation:
a)58.7 cm = 0.587 m
Let g = 9.8m/s2. When the frog jumps from ground to the highest point its kinetic energy is converted to potential energy:
where m is the frog mass and h is the vertical distance traveled, v is the frog velocity at take-off
b) Vertical and horizontal components of the velocity are
The time it takes for the vertical speed to reach 0 (highest point) under gravitational acceleration g = -9.8m/s2 is
This is also the time it takes to travel horizontally, we can multiply this with the horizontal speed to get the horizontal distance it travels
Explanation:
Wavelength in an emission spectrum,
The energy of an electron is given by :
Where
h is the Planck's constant
c is the speed of light
For 435 nm, the energy of the electron will be :
We know that
So,
So, E = 2.86 eV
The energy of the electron dropping from one energy level is 2.86 eV. We know that,
From the given energy levels :
So, the transition must be from E₅ to E₂. Hence, this is the required solution.