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svetoff [14.1K]
3 years ago
14

How does an ice cube cause hot coffee to become cool and through what heat transfer

Physics
1 answer:
Trava [24]3 years ago
3 0
An ice cube causes hot coffee to become cool because the amount of coldness contrasts the hot coffee to make it a little cooler
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A train is speeding down a railroad track at the speed of 50 miles per hour. From whose reference point is the train not moving?
marysya [2.9K]

A: a person sitting on a train

Hence person could have a meal and not get food all over them.

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4 years ago
Free 25 points cause why the hell not
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Which of Newton's Three Laws Applies? Law 1, 2, or 3?
frozen [14]

Answer:

1. Newton's first law

2.Newton's second law

3.Newton's third law

Explanation:

1. Newton's first law stated, In an inertial frame of reference, an object either remains at rest or continues to move at a constant velocity, unless acted upon by a force... this is base of the concept of inertia.

2. Newton's second law stated, In an inertial frame of reference, the vector sum of the forces F on an object is equal to the mass m of that object multiplied by the acceleration a of the object: F = ma, or in easier words, F is directly proportional to a.

3. Newton's third law stated, When one body exerts a force on a second body, the second body simultaneously exerts a force equal in magnitude and opposite in direction on the first body., In this case, the Normal Are opposite with gravititional force.

7 0
3 years ago
How many degrees are in each quadrant <br> A: 90°<br> B: 30°<br> C: 180°<br> D: 360°
Airida [17]

In one quadrant there are 90 degrees.

8 0
3 years ago
Suppose that you measure a galaxy's redshift, and from the redshift you determine that its recession velocity is 30,000 (3×10^4)
anyanavicka [17]

Answer:

1.4 billion light years away

Explanation:

v = Recessional velocity = 30000 km/s[/tex]

H_0 = Hubble constant = \frac{65}{3.2\times 10^6}\ ly

D = Distance to the galaxy

According to Hubble's law

v=H_0D\\\Rightarrow D=\frac{v}{H_0}\\\Rightarrow D=\frac{3\times 10^{4}}{65}\times 3.2\times 10^6\\\Rightarrow D=1476923076.92307\ ly\\\Rightarrow D=1.4\times 10^9\ ly

The galaxy is 1.4 billion light years away

5 0
3 years ago
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