The amount of energy before and after any energy transformations remain the same because energy cannot be created or destroyed. From the law conservation of energy; any time energy is transferred between two objects, or converted from one form into another, no energy is created and none is destroyed. The total amount of energy involved in the process remains the same.
Answer: An increase in carbon dioxide will occur in the atmosphere because there are less trees to use the gas in the process of photosynthesis.
Explanation: Photosynthesis can be simply defined as a process where green plants uses minerals from the soil, water and carbon dioxide to produce their own food (energy-rich organic compound/starch) while oxygen is released into the environment.
On the other hand, Human beings and other animals inhales the oxygen released into the environment by green plants and breath out carbon dioxide.
Deforestation is the permanent removal trees either for commercial or household use or in some cases, to make room or space for other activities or development.
Now when these trees (green plants) are permanently cut down without replacement, humans and other animals continuously exhale carbon dioxide and there will be little or no green plants (trees) available to convert this carbon dioxide into oxygen.
Hence, there will be an increased amount of carbon dioxide in the atmosphere as their are little or no tress to use the gas (carbon dioxide) in the process of photosynthesis.
Answer:
Spring constant, k = 283.33 N/m
Explanation:
Given that,
Force acting on the spring, F = 8.5 N
Stretching in the spring, x = 3 cm = 0.03 m
Let k is the spring constant of the spring. It can be calculated using Hooke's law as :
k = 283.33 N/m
So, the spring constant of the spring is 283.33 N/m. Hence, this is the required solution.
Answer:
F = 150 N
Explanation:
Torque being applied by parent
= F x r
where F is force applied tangentially and r is point of application of force from axis of rotation ( center )
given torque = 240 Nm
r = 1.6 m
F x r = 240
F x 1.6 = 240
F = 150 N
So a force of 150 N is applied by the parent to achieve the given torque.
This force will also be applied by the merry - go- around on the parent as reaction force according to Newton's third law. The parent will not be pushed back by this force because he is standing on a rough surface . Friction of surface will help him remain stationary on the ground.
Answer:
D. The object accelerates
Explanation:
