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nordsb [41]
3 years ago
15

Terrance designed an experiment to show how heat can be transferred from one place to another. The steps of the experiment are s

hown below.
1. Place a lamp light on a table.
2. Place palm about 6 inches below the lamp light.
3. Feel the heat from the lamp light on the palm.

What does Terrance's experiment most likely demonstrate?
A. heat transfer by radiation
B. heat transfer by evaporation
C. energy transfer by melting
D. energy transfer by conduction
Physics
2 answers:
MrRissso [65]3 years ago
6 0
I think its a) heat transfer by radiation
9966 [12]3 years ago
3 0

Answer:

Option (A)

Explanation:

There are three modes of transfer of heat.

1. conduction

2. Convection

3. radiation

Radiation is the process in which the heat travels through the medium without being heated the interventing medium. In this mode of heat transfer there is no requirement of medium.

So, here, the palm is heated due to the heat transfer from the lamp by the mode of radiation.

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A 1500 kg car traveling at 15.0 m/s to the south collides with a 4500 kg truck that is at rest at a stopligt. The car comes to a
Burka [1]

Answer:

5 m/s, moving to the South.

Explanation:

Parameters given:

Mass of car, m = 1500 kg

Initial velocity of car, u = 15 m/s

Mass of truck, M = 4500 kg

Initial velocity of truck, v = 0 m/s (Truck is at rest)

Final velocity of car, U = 0 m/s (Car comes to a stop)

Final velocity of truck = V

Because the collision is elastic, we can apply the principle of conservation of momentum, we have that:

Total initial momentum = Total final momentum

m*u + M*U = m*v + M*V

(1500 * 15) + (4500 * 0) = (1500 * 0) + (4500 * V)

22500 + 0 = 0 + 00V

=> V = 22500/4500

V = 5 m/s

The velocity carries a positive sign, hence, it's moving in the same direction as the car was moving initially.

That is, it's moving to the South.

8 0
3 years ago
Read 2 more answers
Si dejamos caer un objeto desde una gran altura, ¿será que tiene siempre la misma velocidad
olga55 [171]
La respuesta es si.
8 0
3 years ago
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When a perfume bottle is opened, some liquid changes to gas and the fragrance spreads around the room. Which sentence explains t
monitta
A. 

since they do not have a definite volume, this causes it to spread out in the air 
7 0
3 years ago
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Which of the following is not predicted by a higher inhibitory control during childhood
ololo11 [35]

-happiness

Explanation:

  • Happiness is a result of desires.
  • People are known to feel happy when some of their most important desires are fulfilled.
  • If desire is not important, people feel only greater or less satisfaction. But at one level, desires and happiness are excluded because when some desires are fulfilled they are extinguished, and only the feeling of happiness slowly fades.
  • Happiness should not be waited passively, it should not be expected that it will come from the outside through some happy event or that other people will make us happy through great love.

Learn more on

brainly.com/question/1041580

brainly.com/question/3492822

#learnwithBrainly

8 0
3 years ago
A 90-meter train travels at a constant speed of 10 meters per second. How long will it take to cross a 0.06 bridge?
salantis [7]

Answer:

The time taken for the train to cross the bridge is 9.01 s

Explanation:

Given;

length of the train, L₁ = 90 m

length of the bridge, L₂ = 0.06 m

speed of the train, v = 10 m/s

Total distance to be traveled, = L₁ + L₂

                                                  = 90 m + 0.06 m

                                                   = 90.06 m

Time of motion = Distance / speed

Time of motion = 90.06 / 10

Time of motion = 9.006 s ≅ 9.01 s

Therefore, the time taken for the train to cross the bridge is 9.01 s

5 0
3 years ago
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