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USPshnik [31]
2 years ago
15

State joole's law ofheating and verifyexperimentally​

Physics
1 answer:
diamong [38]2 years ago
6 0

Answer:

Joule's law is verified using Joule's calorimeter. .

Explanation:

Two thirds of the volume of the calorimeter is filled with water. The calorimeter is enclosed in a wooden box to minimise loss of heat. A battery (Bt), a key (K), a rheostat (Rh) and an ammeter (A) are connected in series with the calorimeter

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Which of these statements best proves that electromagnetic forces are weaker than strong nuclear forces? Neutrons do not repel o
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Protons do not move out of the nucleus of atoms although they repel each other.

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2 years ago
How is acceleration calculated?
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Acceleration is the change in velocity divided by time

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Which has more friction? wax paper, aluminum foil, wood
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3 years ago
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A car increases velocity from 25 m/s to 50 m/s in 5 seconds. What is the acceleration of the car?
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5 0
3 years ago
When you jump straight up as high as you can, what is the order of magnitude of the maximum recoil speed that you give to the Ea
Klio2033 [76]

Answer:

5.66 × 10⁻²³ m/s

Explanation:

If i assume i can jump as high as h = 2 m, my initial velocity is gotten from v² = u² + 2gh. Since my final velocity v = 0, u = √2gh = √(2 × 9.8 × 2) = √39.2 m/s = 6.26 m/s.

Since initial momentum = final momentum,

mv₁ + MV₁ = mv₂ + MV₂ where m, M, v₁, V₁, v₂ and V₂ are my mass, mass of earth, my initial velocity, earth's initial velocity, my final velocity and earth's final velocity respectively.

My mass m = 54 kg, M = 5.972 × 10²⁴ kg, v₁ = 6.26 m/s, V₁ = 0, v₂ = 0 and V₂ = ?

So mv₁ + M × 0 = m × 0 + MV₂

mv₁ = MV₂

V₂ = mv₁/M =  54kg × 6.26 m/s/5.972 × 10²⁴ kg = 338.093/5.972 × 10²⁴ = 56.61 × 10⁻²⁴ m/s = 5.661 × 10⁻²³ m/s ≅ 5.66 × 10⁻²³ m/s

5 0
3 years ago
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