To find momentum you multiply the mass and velocity.
91 × 7 = 637 kg-m/s
Gives us rain gives us air keeps us from dieing of cosmic radiation keeps us from literly cookin our selfs cause of the sun
Snell's law states: n1/n2 = Sin Ф2/Sin Ф1
But n2/n1 = 1.303 and 1.326 for red light and violet light respectively (for this case) and Ф1 = 45
Therefore,
Фr = Sin ^-1{1/1.303 *Sin 45} = 32.87°
Фv = Sin ^-1 {1/1.326* Sin 45} = 32.23°
Then,
Dispersion, Фv - Фr = 32.23 - 32.87 = -0.64°
Answer:
It will take t = 2.16 [s]
Explanation:
In order to solve this problem, we must find the final speed of the object when it is on the floor. The only way is to use the principle of energy conservation which tells us that potential energy can be transformed into kinetic energy and vice versa.
Now we can find the velocity
v² = 2*g*h
v = √2*9.81*23
v = 21.24 [m/s]
Now using the following equation:
where:
Vf = final velocity = 21.24 [m/s]
Vo = initial velocity = 0
g = gravity acceleration = 9.81 [m/s²]
t = time [s]
21.24 = 0 + (9.81*t)
t = 2.16 [s]
The electric potential energy of the pair of charges when the second charge is at point b is 7.3 x 10⁻⁸ J.
<h3>
Electric potential energy</h3>
When work is done on a positive test charge to move it from one location to another, potential energy increases and electric potential increases.
The electric potential energy between the charges when the second charge is at point b is calculated as follows;
ΔU = -w
Ui - Uf = w
Uf = Ui - w
where;
Uf is the final potential energy
Ui is the initial potential energy
w is the work done by the force
Uf = 5.4 x 10⁻⁸ J - (-1.9 x 10⁻⁸J)
Uf = 5.4 x 10⁻⁸ J + 1.9 x 10⁻⁸ J
Uf = 7.3 x 10⁻⁸ J
Thus, the electric potential energy of the pair of charges when the second charge is at point b is 7.3 x 10⁻⁸ J.
Learn more about electric potential energy here: brainly.com/question/14306881
#SPJ1
