Choose the situation that is an example of heat transfer by radiation. An ice cube melts while you hold it in your hand.

2 answers:

4 0

A). Ice melts in your hand.
No. Conduction. Heat conducts directly from your hand to the ice.

B). Hot & cool liquids move up and down in the bowl.
No. That's convection.

C). Coastal temperatures are cooler.
No. This is conduction of heat from the warm air to the cool ocean.

D). Heat and light from the sun to the Earth through space.
Yay ! That's radiation.

fredd [130]3 years ago

3 0

Answer: Option (D) is the correct answer.

Explanation:

When energy is emitted in the form of rays or waves then this type of energy is known as radiation.

For example, the sun's energy is transferred through the vacuum of space to the earth is an example of heat transfer by radiation.

Whereas an ice cube melts while you hold it in your hand, hot soup rises to the top of the bowl while cooler soup sinks to the bottom, and coastal temperatures are cooler than temperatures in inland areas are not example of heat transfer by radiation.

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evablogger [386]

The answer is ultra violet radiation. From the air

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3 years ago

You could use newton’s second law to calculate the force applied to an object if you knew the objects mass and its _____.

olga2289 [7]

Answer:

You could use newton’s second law to calculate the force applied to an object if you knew the objects mass and its <u>acceleration.</u>

Explanation:

By, Newtons second law, the force applied on an object directly varies with the acceleration caused and the mass of the object.

This is given by :

$F=m\ a$

Where $F$ represents force applied on the object , $m$ represents mass of the object and $a$ represents the acceleration.

In order to calculate force applied on object we require the mass of the object and its acceleration. The force can be calculated by finding the product of mass and acceleration of the object.

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3 years ago

With the piston head locked in place, will the volume of the gas increase, decrease, or stay the same whenthe piston is placed a

Nuetrik [128]

Answer:

For real gas the volume of a given mass of gas will increase with increase in temperature.

Explanation:

With the piston head locked in place and place above the fire,the volume of the gas will increase,because the volume of a given mass of gas increases with increase temperature.

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3 years ago

A wheel initially spinning at wo = 50.0 rad/s comes to a halt in 20.0 seconds. Determine the constant angular acceleration and t

svetlana [45]

Answer:

(I). The angular acceleration and number of revolution are -2.5 rad/s² and 500 rad.

(II). The torque is 84.87 N-m.

Explanation:

Given that,

Initial spinning = 50.0 rad/s

Time = 20.0

Distance = 2.5 m