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3 years ago

If chilled coke and hot tea are kept together tea cools down but coke gets warm .why?

1 answer:

6 0

When hot tea is mixed to chilled coke, tea loses heat and coke gains heat. Thus, tea cools down but coke gets heated. Because it is liquid and liquid does not totally cool down to the ambient temperature, it and the iced drink will eventually reach the same temperature.

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Which statement best explains the difference between velocity and speed?

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4 years ago

Read 2 more answers

The skateboarder has a mass of 100 kg. When traveling downward from E to D, he reaches a velocity of 11 m/s. Calculate his kinet

patriot [66]

6050 J is the kinetic energy at D

<u>Explanation:</u>

In physics, the object's kinetic energy (K.E) defined as the energy it possesses during movement. It can be defined as the required work to accelerate a certain body weight in order to rest at a certain speed. When the body receives this energy as it speeds up (accelerates), it retains this energy unless speed varies. The equation is given as,

$K . E=\frac{1}{2} \times m \times v^{2}$

Where,

m - mass of an object

v - velocity of the object

Here,

Given data:

m = 100 kg

v = 11 m/s

By substituting the given values in the above equation, we get

$K . E=\frac{1}{2} \times 100 \times(11)^{2}=\frac{1}{2} \times 100 \times 121=\frac{12100}{2}=6050\ \mathrm{J}$

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4 years ago

Besides a reduction in friction, the only way to increase the amount of work output of a machine is to _____ the work input. Dec

Vedmedyk [2.9K]

Answer:

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Explanation:

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3 years ago

Radioactive isotopes can be used to find the age of rocks, fossils, or other artifacts. Carbon-14 has a half-life of 5,730 years

bazaltina [42]

Answer:

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2 years ago

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3 years ago

If chilled coke and hot tea are kept together tea cools down but coke gets warm .why?​

If chilled coke and hot tea are kept together tea cools down but coke gets warm .why?