Answer:
Water - Formula: H2O = Hydrogen2 + Oxygen. ...
Hydrogen Peroxide - Formula: H2O2 = Hydrogen2 + Oxygen2 ...
Salt - Formula: NaCl = Sodium + Chlorine. ...
Baking Soda - Formula: NaHCO3 = Sodium + Hydrogen + Carbon + Oxygen3 ...
Octane - Formula: C8H18 = Carbon8 + Hydrogen18
The idea that objects only change their velocity due to a force is encapsulated in Newton's first law. Newton's first law: An object at rest remains at rest, or if in motion, remains in motion at a constant velocity unless acted on by a net external force.
540 nonlillion
thats a 540 followed by 30 0's
Answer:
4.3 m/s² ( approx )
Explanation:
Velocity of local elevator with respect to express elevator initially is 2.1 mps
After 2.7 seconds , the gap between them is
2.7 x 2.1 = 5.67 m
The express elevator begins with acceleration . At the time of catching up
velocity of local with respect to express is - 9.5 m /s .That means velocity of
express with respect to local will be 9.5 m/s .
Relative velocity of express is 9.5 m/s
Absolute velocity of express is 9.5 + 2.1 = 11.6 m/s
Acceleration of express = change in velocity / time
= ( 11.6 -0)/ 2.7 = 4.3 m/s² ( approx )
Answer:
<h2>
<em>6,142mm²</em></h2>
Explanation:
Given the dimension of a paper measured by a ruler as 7.4 cm wide and 8.3 cm long, the area of the paper is expressed using the area for calculating the area of a rectangle as shown;
Area of the piece of paper = Length * Width
Given length = 7.4cm
Length = 74mm (Since 10mm = 1cm)
Width = 8.3cm
Width (in mm) = 83mm
We converted to mm since the ruler used to measure has a division of 1mm.
Substituting the given values into the formula, we will have:
Area of the piece of paper = 74mm * 83mm
Area of the piece of paper = 6,142mm²
<em>Hence, the area of the piece of paper is 6,142mm²</em>