The answer is B. An antitussive will help a cough by deterring the cough reflex.
This question is very simple if you really think about it. B isn't correct because kittens can eat dry food. A wouldn't be correct. Also C wouldn't be correct because it doesn't matter if you watch your kitten eat or not so the answer would be D because some kittens prefer dry food and some prefer canned food better. So it's based on how her kitten behaves.
Answer:
Explanation:
hence making time the subject then
Substituting 50 cm which is equivalent to 0.5 m for distance and velocity as given as we obtain
From kinematic equation
and taking g as 9.81 then
The potential energy of a mass is given by the formula:
Where m is the mass, g is the gravity acceleration and h is the height.
Since the mass and gravity will be constant, for half the potential energy, we have:
So the box will have half the potential energy at half the height of the ramp.
Alpha particles have both high mass and low velocity, but it would be the former that determines why they can't penetrate. An alpha particle is made of two protons and two neutrons, which is quite a large mass for a particle. This large mass keeps it from penetrating too deeply into anything, since it will essentially "get stuck" when it comes too near to another atom.
So the answer, I believe, is B. Alpha particles have high mass.