Answer:
In practical terms, density is the weight of a substance for a specific volume. The density of water is roughly 1 gram per milliliter but, this changes with temperature of if there are substances dissolved in it. Ice is less dense than liquid water which is why your ice cubes float in your glass.
Explanation:
Answer:
Explanation:
Electricity is a flow of electrons. Electrons can flow across a vacuum. ... They need to leap because the vacuum is a perfect insulator and so there is no medium in which they can flow (like through a metal conductor) so they must aquire all of the energy necessary to cover the distance before they can escape the cathode.
The mass of the van will be 2.5 kg, Mass is found as the ratio of the force and the acceleration.
<h3>What is force?</h3>
Force is defined as the push or pull applied to the body. Sometimes it is used to change the shape, size, and direction of the body.
Force is defined as the product of mass and acceleration. Its unit is Newton.
F=ma
5.5 kN = m × 2.2m/s²
m= 2.5 kg
Hence,the mass of the van will be 2.5 kg,
To learn more about the force refer to the link;
brainly.com/question/26115859
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Given,
Radius of curvature of concave mirror = 1.6m
We know that ,
Focal length = radius/2
Hence ,
Focal length of concave mirror = radius of concave mirror /2
=> F = 1.6/2
=> F = 0.8m
Hence the focal length of concave mirror is 0.8 m
Answer - The given statement is false.
Explanation-
The members of knight of labour were opposing strikes and had a belief or boycott or arbitration.
A secret society was formed in 1869 by the tailors in Philadelphia and named Knights of labour. This union Organisation was formed to to get rights over equal pay if work is equal, abolish child labour, Work time of 8 hours and some graduated income tax reforms. This union was vertically organized.
