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3 years ago

What type of heat transfer is used to fry an egg in a pan and how can you tell?

Physics

2 answers:

Deffense [45]3 years ago

6 0

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.

Scilla [17]3 years ago

6 0

The answer would be B. its is conduction because the egg is touching the pan.

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What is the difference between sounds that have the same pitch and loudness?

Naya [18.7K]

Answer:

B) the natural frequency

Explanation:

The pitch of a sound depends on the frequency while loudness of a sound depends on the amplitude of sound waves.

5 0

3 years ago

Read 2 more answers

Drivers a and b travel west from boston. driver a leaves three hours earlier traveling at a constant speed of 68mph. driver b fo

Elza [17]

We can answer this using one of the equations of linear motion:

v = d / t

where:

v = velocity

d = distance

t = time

<span>In the problem, we are asked to find for the time in which Driver B will catch up to Driver A. Therefore, find the time when dA = dB. Rearranging the equation and equation dA and dB will result in:</span>

It was given that:

vA = 68 mph

tA = tB + 3 (since person A was travelling 3 hours earlier)

vB = 85 mph

tB = unknown

Substituting into equation 1:

68 * (tB + 3) = 85 * tB

68 tB + 204 = 85 tB

tB = 12 hrs

Therefore driver B would catch up to driver A after 12 hrs.

5 0

3 years ago

A boy who exerts a 300-N force on the ice of a skating rink is pulled by his friend with a force of 75 N, causing the boy to acc

JulsSmile [24]

Answer:

Choice a. $70\; \rm N$ , assuming that the skating rink is level.

Explanation:

<h3>Net force in the horizontal direction</h3>

There are two horizontal forces acting on the boy:

The pull of his friend, and
Frictions.

The boy should be moving in the direction of the pull of his friend. The frictions on this boy should oppose that motion. Therefore, the frictions on the boy would be in the opposite direction of the pull of his friend.

The net force in the horizontal direction should then be the difference between the pull of the friend, and the friction on this boy.

$\text{Net force, horizontal} = 75\; \rm N - 5\; \rm N = 70\; \rm N$ .

<h3>Net force in the vertical direction</h3>

The net force on this boy should be zero in the vertical direction. Consider Newton's Second Law of motion. The net force on an object is proportional to its acceleration. In this question, the net force on this boy in the vertical direction should be proportional to the vertical acceleration of this boy.

However, because (by assumption) the ice rink is level, the boy has no motion in the vertical direction. His vertical acceleration will be zero. As a result, the net force on him should also be zero in the vertical direction.

<h3>Net force</h3>

Therefore, the (combined) net force on this boy would be:

$\sqrt{(70\; \rm N)^2 + (0\; \rm N)^2} = 70\; \rm N$ .