Answer:
true
Explanation:
B) It is conduction because the egg is touching the pan.
C) It is convection because you put oil in a frying pan to cook in it.
D) It is convection because you can feel the heat a few inches away from the pan.
Answer: Option (B) is the correct answer.
Explanation:
A process in which transfer of heat occurring when one object touches another object is known as conduction.
For example, when a pan is heated and then an egg is placed over the pan. Then there will be transfer of heat from pan towards the egg.
As a result, the egg gets cooked because the egg was touching the pan.
Hence, we can conclude that it is conduction because the egg is touching the pan.
Heat transfer is used to fry an egg in a pan, It is conduction because the egg is touching the pan. Hence the correct option is option (B).
When frying an egg in a pan, the primary mode of heat transfer is conduction. Conduction is the transfer of heat through direct contact between two objects or substances.
The pan is heated on a stovetop or a heat source, which causes the pan to become hot. When the egg is placed in the pan, the heat from the pan is transferred to the egg through the process of conduction.
Option A suggests that it is conduction because the egg gets cooked, but this answer does not explain the specific mechanism of heat transfer involved.
Option C mentions convection because oil is used in frying. While oil can enhance the cooking process, convection is not the primary mode of heat transfer in this scenario.
Option D states it is convection because you can feel the heat a few inches away from the pan.
Therefore, option B is the correct answer, as it correctly identifies that the heat transfer involved in frying an egg in a pan is conduction because the egg is touching the pan.
To know more about heat transfer:
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Icebergs are composed of freshwater and freshwater is more dense then salt water.
Icebergs are colder then the ocean water and cold water is less dense then warm water.
Icebergs are colder then the ocean water and cold water is more dense then salt water.
that exerts a force of magnitude F 12.0 N at an angle
u 25.0°. (a) What is the magnitude of the
block’s acceleration? (b) The force magnitude F is
slowly increased. What is its value just before the
block is lifted (completely) off the floor? (c) What is
the magnitude of the block’s acceleration just before
it is lifted (completely) off the floor?
The magnitude of the block's acceleration is roughly 2.18 m/s². The force required just before the block is lifted off the floor is equal to the weight of the block, 49.05 N. Just before it is lifted, the block's acceleration is still due to the horizontal component of the force.
This problem involves physics concepts related to forces and acceleration of an object on a frictionless surface. The key to solving it involves understanding the relationship between mass, force, and acceleration (Newton's second law) and the concept of vertical and horizontal components of a force.
(a) The magnitude of the block's acceleration can be calculated using the horizontal component of the force (Fh = F cos θ) and Newton's second law (F = ma). So, a = Fh / m = (F cos θ) / m = (12.0 N cos 25) / 5.00 kg ≈ 2.18 m/s².
(b) The force F required to lift the block is equal to the weight of the block mg. Thus, F = m*g = 5.00 kg * 9.81 m/s² = 49.05 N.
(c) Just before the block is lifted off the floor, it is still in contact with the floor so the normal force is not zero. As such, there is no vertical acceleration, so the magnitude of the block's acceleration is still solely due to the horizontal component of F.
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