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NeX [460]
3 years ago
7

Which branch of science involves the study of matter and energy

Physics
2 answers:
Olin [163]3 years ago
6 0
Physics<span> is a natural science that involves the study of matter and its motion through space time, along with related concepts such as energy and force.</span>
Klio2033 [76]3 years ago
6 0

Answer:

Physics

Explanation:

Physics is the branch of science that handles the study of different phenomena in the nature. The four pillars are thermodynamic, classical mechanics, electromagnetism and quantum mechanics.

Thermodynamics studies the temperature of an object. Classical mechanics studies the cinematic and dynamic of bodies. The electromagnetism studies the electric and magnetic properties of the objects. And quantum mechanics studies the behavior of matter in a macroscopic scale.

In all of the cases mentioned above, energy is present in its different forms (mechanic energy, kinetic energy, potential energy).

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What force is needed to give a 4.5-kg bowling ball an acceleration of 9 m/s2?
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A spherical shell contains three charged objects. The first and second objects have a charge of − 14.0 nC and 31.0 nC , respecti
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Answer:

The charge on the third object is − 21.7nC

Explanation:

From Gauss's Law

Φ = Q/ε₀

where;

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Q is the total charge Q in the shell = ?

ε₀ is the permittivity of free space = 8.85 x 10⁻¹²

From this equation; Φ = Q/ε₀

Q = Φ * ε₀ = − 533 * 8.85 x 10⁻¹²

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Q = q₁ + q₂ + q₃

− 4.7nC = − 14.0 nC + 31.0 nC + q₃

− 4.7nC − 17nC = q₃

− 21.7nC = q₃

Therefore, the charge on the third object is − 21.7nC

8 0
3 years ago
At ground level g is 9.8m/s^2. Suppose the earth started to increase its angular velocity. How long would a day be when people o
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supose at 20 degree celsius the resistance of Tungsten thermometer is 154.9. WHen placed in a particular solution , the resistan
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Answer:

T₂ = 95.56°C

Explanation:

The final resistance of a material after being heated is given by the relation:

R' = R(1 + αΔT)

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R' = Final Resistance = 207.4 Ω

R = Initial Resistance = 154.9 Ω

α = Temperature Coefficient of Resistance of Tungsten = 0.0045 °C⁻¹

ΔT = Change in Temperature = ?

Therefore,

207.4 Ω = 154.9 Ω[1 + (0.0045°C⁻¹)ΔT]

207.4 Ω/154.9 Ω = 1 + (0.0045°C⁻¹)ΔT

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