Answer:
Amount of steam produced = m' = 16.1 grams
Explanation:
Mass of the block of iron = M = 400 g
Initial temperature of iron =
= 400 °C
Mass of water = m = 60 g
Initial temperature of water =
= 30 °C
Specific heat of iron = 450 J/kgC
Specific heat of water = 4186 J/kg C
Latent heat of vaporization of water = L = 
Heat lost by iron = Heat gained by water + Heat of vaporization.
(400)(450)(400 - 100)= (60)(4186)(100 - 30) + m' (
⇒ 5.4 × 10⁷ = 1.7581 × 10⁷ + 22.6 × 10⁵ m'
⇒ m'=mass of steam produced =3.642 × 10⁷ / 22.6 × 10⁵ kg
= 16.1 grams
I believe the answer is coal
Answer:
the force needed to give the truck the acceleration is 29,760 N.
Explanation:
Given;
mass of truck, m = 4800 kg
acceleration of the truck, a = 6.2 m/s²
The force needed to give the truck the acceleration is calculated as;
F = ma
F = 4800 x 6.2
F = 29,760 N
Therefore, the force needed to give the truck the acceleration is 29,760 N.
Answer:
Review each answer in the explanation part
Explanation:
Identify a problem or need = Aerospace engineers need a lightweight material to build a jet
Note: Identify a problem is related always with a need.
After identify the problem the next stage is the design
Design a solution = Engineers determine what features the material must have.
Note: The design process implies the choice of the materials and the proper numeric calculations.
Implement the solution = Engineers test a carbon - plastic compound in a wind tunnel.
Note: after the design, the following process is the built of the equipment and the different tests.
Evaluate the solution = The carbon-plastic compound is redesigned to save maximun energy.
Note: After testing, you enter a part of re-design that means making improvements to the already constructed.
Answer: The bond that hold water molecules together are due to shared electrons. The bond of shared electrons is known as a covalent bond.
Explanation: Water is held together by bonds known as covalent bonds, in which electrons are shared by the elements. In this case, the two hydrogen atoms and the one oxygen atom share a bond in which they share electrons, attaining a full outer shell.