The refractive index of a medium is independent of (not related to) the angles of incidence or refraction. It's just a property of the medium. <em>(D)</em>
Answer:
Yes
Explanation:
Yes because Electromagnetic waves differ from mechanical waves in that they do not require a medium to propagate. This means that electromagnetic waves can travel not only through air and solid materials, but also through the vacuum of space.
Answer: 1.7m/s^2
Explanation:
Given that:
mass of object = 10.9 kg
force = 18.53
Acceleration of the object = ?
Since force is the product of the mass of an object and the acceleration by which it moves.
i.e Force = mass x acceleration
18.53 N = 10.9 kg x acceleration
Acceleration = (18.53 N / 10.9 kg)
Acceleration = 1.7m/s^2
Thus, the acceleration of the object is 1.7m/s^2
B. After they’ve tried other drugs.
Answer: 91.94 kg
Explanation: Supoose Al's mass is m. The combined mass is 168kg, so Jo's mass is 168 - m.
The Law of Conservation of Momentum states that when two objects collide, the total momentum of both objects before the collision is the same as the total momentum of both objects after the collision.
At the beginning, Al and Jo are united without movement, so their initial momentum is zero.
After the release of their hands, Al goes in one direction and Jo moves to the opposite direction. Suppose the direction Al is moving is positive. Conservation of momentum will be
where
index i referes to initial momentum
index f to final momentum
index 1 refers to Al
index 2 to Jo
Calculating:
m = 91.94
Al has a mass of 91.94 kg.