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stira [4]
4 years ago
5

Why do we warm up when we wear warm clothes? Explain the hiccup from the point of view of physics.

Physics
1 answer:
bazaltina [42]4 years ago
5 0
Well your body would be trapping heat when your cold your blood contricts to help hold in heat so it would help keep your body tempture up and keep heat from escaping
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Can you rule out natural factors as the main cause of today's climate change?
m_a_m_a [10]

Answer:

Yes, as today human activities are the main cause for climate change.

In recent years, due to the over-consumption of primary sector products, the reckless over-consumption of natural resources and the increase of the earth's population, the natural environment has deteriorated, resulting in an imbalance between the countries of the developed and developing world in terms of climatic and environmental security. The global purpose of states, institutions and associations is to work together for sustainable development at all geographical levels and to fight inequality at the international level. At the same time, it is characteristic that a global movement has developed to demand the equal distribution of environmental burdens and climate justice.  

6 0
3 years ago
Which would melt first, germanium with a melting point of 1210 k or gold with a melting point of 1064oc?
iren2701 [21]
<span>Germanium To determine which melts first, convert their melting temperatures so they're both expressed on same scale. It doesn't matter what scale you use, Kelvin, Celsius, of Fahrenheit. Just as long as it's the same scale for everything. Since we already have one substance expressed in Kelvin and since it's easy to convert from Celsius to Kelvin, I'll use Kelvin. So convert the melting point from Celsius to Kelvin for Gold by adding 273.15 1064 + 273.15 = 1337.15 K So Germanium melts at 1210K and Gold melts at 1337.15K. Germanium has the lower melting point, so it melts first.</span>
8 0
3 years ago
Three deer, A, B, and C, are grazing in a field. Deer B is located 62m from deer A at an angle of 51° north of West. Deer C is l
Anna71 [15]

Set deer A's position to be the origin. Let c be the distance from deer A to deer C. We're given that deer B is 95 m away from deer C, which means the length of the vector B-C is 95 (or C-B). Then

|B-C|^2=(B-C)\cdot(B-C)=B\cdot B-2B\cdot C+C\cdot C=|B|^2-2B\cdot C+|C|^2

|B-C|^2=|B|^2-2|B||C|\cos(180-77-51)^\circ+c^2

95^2=62^2-2(62)(c)\cos52^\circ+c^2

c^2-124\cos52^\circ c-5181=0\implies c=120\,\mathrm m

8 0
4 years ago
Density of solids What is your hypothesis (or hypotheses) for this experiment?.
valentina_108 [34]

I formulate a hypothesis based on their observations about what occurs when both the rock and the wood are submerged in water.

<h3 /><h3>What is density?</h3>

Density is defined as the mass per unit volume. It is an important parameter in order to understand the fluid and its properties. Its unit is kg/m³.

The mass and density relation is given as

mass = density × volume

I study if the volume or density of items determines whether solid objects float or sink in water in this scientific inquiry I did the experiment of density, mass, and volume using a rock and a standard-shaped piece of wood.

It is critical that the chosen piece of wood is larger than the rock and that the rock be tiny enough to fit inside the measuring cylinder. I see both the rock and a chunk of wood.

Hence I formulate a hypothesis based on their observations about what occurs when both the rock and the wood are submerged in water.

To learn more about the density refers to the link;

brainly.com/question/952755

7 0
3 years ago
What is the kinetic energy of a 4 kg toy car moving at 5 m/s?
Mamont248 [21]

Answer:

50 J

Explanation:

<3

4 0
3 years ago
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