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Hope this helps.
-Benjamin
Hope this helps.
-Benjamin
What is the oxidation state of rubidium (Rb)?
1 answer:
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Answer:
Explanation:
Given data
Frequency fs=600 Hz
Velocity Vs=90 km/hr =25 m/s
Speed of sound v=343 m/s
To find
Frequency f heard by a person standing beside the road in front of the car
Solution
From Doppler's effect we know that:
Here Vs is negative as the source is moving towards listener
Hey there!
: Scientific law's would be a law that was proven and test and examined by scientist.These laws would basically be fact's, proven that what ever they say would technically be true.
: These are "theories" that are made by scientist usually hypothesis to see what law would actually be true. These "theories" are of course not true, they are not quite laws, they are experiment's that could be laws, but they're theories, thing's that are technically false.
Hope this helps you!
Hope this helps you!
Answer:
The speed of its center of mass =
Explanation:
Consider the potential energy at the level of center of mass of rod below the pivot=0
Mass of uniform rod=M
Length of rod=L
The rotational inertia about the end of a uniform rod=
Kinetic energy at the level of center of mass of rod below the pivot=
Kinetic energy at the level of center of mass of rod above the pivot=0
Potential energy at the level of center of mass of rod above the pivot=mgh
We have to find the center of mass ( in terms of g and L).
According to conservation of law of energy
Initial P.E+Initial K.E=Final P.E+Final K.E
Where
I=Moment of inertia
=Angular velocity
Substitute the values then we get
Now, we know that ,
Substitute the values then we get
Hence, the speed of its center of mass =