K H D b d c m
So 10000 cm in a Km
A
Answer:
60 (1 hour) × 0.25 = 15 minutes
15 ÷ 16 = 0.9375 meters per minute
Answer:
The person’s kinetic energy is 1,025 J
Explanation:
Kinetic energy is a form of energy. It is defined as the energy associated with bodies that are in motion and this energy depends on the mass and speed of the body.
Kinetic energy is defined as the amount of work necessary to accelerate a body of a given mass and in a position of rest, until it reaches a given speed. Once this point is reached, the amount of accumulated kinetic energy will remain the same unless there is a change in speed or the body returns to its state of rest by applying a force.
Kinetic energy is represented by the following formula:

where Ec is kinetic energy, which is measured in Joules (J), m is mass measured in kilograms (kg), and v is velocity measured in meters over seconds (m/s).
In this case:
- v= 5

Replacing:

Solving:
Ec= 1,025 J
<u><em>The person’s kinetic energy is 1,025 J</em></u>
Answer:
230.3 kJ
Some chemical reactions show release of heat while some show absorption of heat. On these bases, the reaction is classified as either endothermic or exothermic. Negative sign of ΔH means exothermic reaction.
The new volume of the gas is 16.3 L.
<h3>Boyle's law</h3>
Boyle's law states that the volume of a fixed mass of gas is inversely proportional to its pressure, at a constant temperature.
To calculate the new volume of the gas, we use the expression from Boyle's law.
Formula:
- PV = P'V'............. Equation 1
Where:
- P = initial pressure of gas
- V = Initial volume of gas
- P' = Final pressure of gas
- V' = Final volume of gas
Make V' the subject of the equation
- V' = PV/P'............. Equation 2
From the question,
- V = 20 L
- P = 2.5 atm
- P' = 3.1 atm
Substitute these values into equation 2
- V' = (20×2.5)/3.1
- V' = 16.13 L.
Hence, The new volume of the gas is 16.3 L.
Learn more about Boyle's law here: brainly.com/question/26040104