The answer is D. A more reactive metal replaces a less reactive metal in a chemical reaction.
Answer:
92 m/s
Explanation:
The speed of Airplane when observed from the ground is 203 m/s i.e., speed of Airplane when there is no wind =
The speed of the airplane relative to the air is 111 m/s =
This means that the airplane is moving against the current
Speed of the current with respect to the ground =
Velocity of current has to be atleast 92 m/s
In this question we will use the Malus Law, the formula of it is I = lo*cos^2(alpha). We will say that the given percentage of the intensity of a polarized light wave passes through a polarizing filter is 14%.
I = Io*cos^2(alpha)
then cos^2(alpha) = 0.14 alpha = arccos(sqrt(0.14)) = 68.03°
The answer in this question is 68.03°
Answer:
It should be 1 meter, but I'm no scientist.
Explanation: IDK
The addition of heat energy to a
system always causes the temperature of that system to increase. This is always
true because you are adding heat of a substance to increase its temperature. For example, you are going
to drink a cup of coffee. And you wanted it hot to boost your attention. So you
have to use hot water. In order for your water to become hot or warm, you need
boil it in a kettle. Note that you are going to use an electric stove. The
electric stove gets it energy from the source giving it a hotter temperature to
the water in the kettle. You are applying heat energy to warm the water. So,
the statement is true.