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nlexa [21]
2 years ago
9

Help plz i have until 4.20 plz

Physics
2 answers:
Setler [38]2 years ago
8 0

Answer:

Substance 1 because it became a liquid faster

Explanation:

Andrej [43]2 years ago
7 0
Substance 1 because it became a liquid faster
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A 2100 kg car starts from rest and accelerates at a rate of 2.6 m/s2 for 4.0 s. Assume that the force acting to accelerate the c
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When the system is experiencing a uniformly accelerated motion, there are a set of equations to work from. In this case, work is energy which consist solely of kinetic energy. That is, 1/2*m*v2. First, let's find the final velocity.

a = (vf - v0)/t
2.6 = (vf - 0)/4
vf = 10.4 m/s

Then W = 1/2*(2100 kg)*(10.4 m/s)2
W = 113568 J = 113.57 kJ
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What does wave speed have to do with all SONAR AND RADAR technologies?
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Explanation:

1) Radar uses radio waves, which are a type of electromagnetic energy. Sonar uses the echo principle by sending out sound waves underwater or through the human body to locate objects. Sound waves are a type of acoustic energy. Because of the different type of energy used in radar and sonar, each has its own applications.

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3 years ago
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Which nutrient is the most difficult to break down and, thus, is generally used last for energy in the body?
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proteins

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protiens is the most difficult nutrient to brek down

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Imagine that an electron in an excited state in a nitrogen molecule decays to its ground state, emitting a photon with a frequen
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Since energy cannot be created nor destroyed, the change in energy of the electron must be equal to the energy of the emitted photon.

The energy of the emitted photon is given by:
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This is the energy given to the emitted photon; it means this is also equal to the energy lost by the electron in the transition, so the variation of energy of the electron will have a negative sign (because the electron is losing energy by decaying from an excited state, with higher energy, to the ground state, with lower energy)
\Delta E= -5.86 \cdot 10^{-19} J
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3 years ago
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