Answer:
its a solid but can flow
Explanation:
those answers to choose from are wrong
Cancer treatments, Radiography, food irradiation
Answer:
The correct option is;
2.26 × 10⁸
Explanation:
The index of refraction, in a medium, n = The speed of light in air/(The speed of light in the medium)
The speed of light = 299792458 m/s
Given that the index of refraction of water = 1.33, we have;
1.33 = 299792458/(The speed of light in water)
The speed of light in water = 299792458/1.33 = 225407863.58 m/s ≈ 2.26 × 10⁸ m/s
The speed of light in water ≈ 2.26 × 10⁸ m/s
Therefore;
v ≈ 2.26 × 10⁸ m/s.
Answer:
26.82m/s
Explanation:
Given
Mass = m= 0.4kg
Initial Velocity = u = 0
Charge = 4.0E-5C
Distance= d = 0.5m
Object Charge = 2E-4C
First, we'll calculate the initial energy (E)
E = Potential Energy
PE = kQq / d
Where k = coulomb constant = 8.99E9Nm²/C²
Energy is then calculated by;
PE = 8.99E9 * 4E-5 * 2E-4 / 0.5
PE = 143.84J
Energy = Potential Energy = Kinetic Energy
K.E = ½mv² = 143.84J
½mv² = ½ * 0.40 * v² = 143.85
0.2v² = 143.85
v² = 143.85/0.2
v² = 719.25
v = √719.25
v = 26.81883666380777
v = 26.82m/s
Hence, the object is 26.82m/s fast when the cart moving is very far (infinity) from the fixed charge