Salutations!
What is the smallest unit of a substance that keeps all of the physical and chemical properties of that substance?
Molecules is the smallest unit of a substance that keeps all of the physical and chemical properties of that substance. It is a group of atoms bounded together, and it can participate in a chemical reaction/
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Answer:
125 V
Explanation:
Given,
Power ( P ) = 500 W
Current ( I ) = 4 A
To fine : -
Potential difference ( V ) = ?
Formula : -
P = V I
V = P / I
= 500 / 4
V = 125 V
Therefore,
the potential difference across the ends of the heating element is 125 V.
Answer:
Explanation:
It is given that,
Radius of the banked road, r = 400 m
Speed of the car for the safe travelling, v = 35 m/s
On the banking of a curve, the force of friction is balanced by the centripetal force acting on it such that the banking angle is given by :
So, the banking angle of the road is 17.32 degrees. Hence, this is the required solution.
Answer:
a) Both have same angular speed
b) Mary has larger linear speed
c) Mary has larger radial acceleration
Explanation:
a) Since Tom and Mary are both on the same merry-go-around, all points on the merry-go-around are subjected to a same angular speed. Therefore, they both have the same angular speed.
b) Linear speed, however, is the product of angular speed and their radius or rotation, aka their distance the the center of rotation. In this case Mary has a larger radius since she's sitting at the outer rim.
c) Radical acceleration is the product of angular speed squared and their radius so again, Mary would have a larger radial acceleration because of greater radius.
