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Allushta [10]
3 years ago
8

Which of newtons laws explains why your hands get red when you press them hard against a wall

Physics
1 answer:
Andrei [34K]3 years ago
3 0
Most likely Newton's 3rd law.
You might be interested in
Why is physical science important
Murrr4er [49]
"Traditionally, physical science courses are categorized into four areas: physics, chemistry, earth sciences, and space sciences. It is important to understand that the arbitrary divisions of specialized knowledge are integrated into a basic overview of the physical laws that govern our universe." - Cameron University
3 0
4 years ago
A cube has a density of 1800 kg/m3 while at rest in the laboratory. What is the cube's density as measured by an experimenter in
olga2289 [7]

Answer:

4341.44763 kg/m³

Explanation:

\rho' = Actual density of cube = 1800 kg/m³

\rho = Density change due to motion

v = Velocity of cube = 0.91c

c = Speed of light = 3\times 10^8\ m/s

Relativistic density is given by

\rho=\frac{\rho'}{\sqrt{1-\frac{v^2}{c^2}}}\\\Rightarrow \rho=\frac{1800}{\sqrt{1-\frac{0.91^2c^2}{c^2}}}\\\Rightarrow \rho=\frac{1800}{\sqrt{1-0.91^2}}\\\Rightarrow \rho=4341.44763\ kg/m^3

The cube's density as measured by an experimenter in the laboratory is 4341.44763 kg/m³

5 0
4 years ago
Two football players with mass 85 kg and 110 kg run directly toward each other with speeds 4 m/s and 7 m/s respectively. If they
sergejj [24]

Use the conservation of the momentum to answer this question:

m_1\vec v_1+m_2\vec v_2 = m\vec v\implies\\\vec v = \frac{m_1\vec v_1+m_2\vec v_2}{m_1+m_2}\\v = \frac{85kg\cdot 4 m/s+110kg\cdot (-7m/s)}{195kg}=-2.2\frac{m}{s}

The resulting speed of the two bodies will be 2.2 m/s in the (original) direction of the overweight guy (110kg). Their brains not happy about the collision either.

5 0
3 years ago
Resistance is seen as part of ______________--- how a person understands his or her being and relationship to the world at large
aleksley [76]

Answer:

The self and world construct

Explanation:

in physics

Resistance is a measure of the opposition to current flow in an electrical circuit. Resistance is measured in ohms, symbolized by the Greek letter omega (Ω). Ohms are named after Georg Simon Ohm (1784-1854), a German physicist who studied the relationship between voltage, current and resistance.

Self psychology views resistances as protecting a vulnerable self. Resistances are seen as efforts to maintain levels of organization that patients have achieved within the context of their traumatic life situation.

3 0
4 years ago
NEED HELP ASAP!!
Ber [7]

Answer:

it is acidic

Explanation:

4 0
4 years ago
Read 2 more answers
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