Answer:
m = 4450 g
Explanation:
Given data:
Amount of heat added = 4.45 Kcal ( 4.45 kcal ×1000 cal/ 1kcal = 4450 cal)
Initial temperature = 23.0°C
Final temperature = 57.8°C
Specific heat capacity of water = 1 cal/g.°C
Mass of water in gram = ?
Solution:
Formula:
Q = m.c. ΔT
Q = amount of heat absorbed or released
m = mass of given substance
c = specific heat capacity of substance
ΔT = change in temperature
ΔT = 57.8°C - 23.0°C
ΔT = 34.8°C
4450 cal = m × 1 cal/g.°C × 34.8°C
m = 4450 cal / 1 cal/g
m = 4450 g
Answer: m/s^2 (metre per second square)
Explanation:
Acceleration is the rate of change in velocity per unit time. The standard unit of measurement for acceleration is m/s^2 (metre per second square).
It can be derived from:
Acceleration = velocity / Time
Acceleration = (metre per second / second)
Acceleration = metre per second square.
In short form, it is written as m/s^2
Explanation:
Population is hugely dependent on the environment and it's factors. The physical, chemical and biological components of the environment plays vital roles in the sustenance of all life on earth.
A change in the environment can lead to terrifying consequences. Let's examine some of the changes:
- Climate change can lead to flooding of biological habitats and where people typically reside. This can lead to death and loss of life.
- Drought can lead to decline in food production. During a drought, a place receives little to no rainfall and the land is not fit for agricultural practices. This will eventually lead to famine.
- Pollution: it is the introduction of harmful substances into the environment. Pollution is harmful to the population.
- Geological hazards; earthquakes, volcanic eruptions,mass wasting and so on can lead to a crash in population.
- Wildfires, tornadoes, dust bowls e.t.c are changes in the environment that can cause severe consequences on the population.
Learn more:
Environment brainly.com/question/3906722
#learnwithBrainly
