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Papessa [141]
3 years ago
8

How we can best share the observation of the light through one hole the paper

Physics
1 answer:
zhenek [66]3 years ago
5 0
Drawing is an easy way to connect to your inner child

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A 400-g block of iron at 400°C is dropped into a calorimeter (of negligible heat capacity) containing 60 g of water at 30°C. How
oksano4ka [1.4K]

Answer:

Amount of steam produced = m' = 16.1 grams

Explanation:

Mass of the block of iron = M = 400 g

Initial temperature of iron = t_{i} = 400 °C

Mass of water = m = 60 g

Initial temperature of water = t_{w} = 30 °C

Specific heat of iron = 450 J/kgC

Specific heat of water = 4186 J/kg C

Latent heat of vaporization of water = L = 22.6 \times10^{5 } J/kg

Heat lost by iron = Heat gained by water + Heat of vaporization.

(400)(450)(400 - 100)= (60)(4186)(100 - 30) + m' (22.6 \times 10^{5 }

⇒ 5.4 × 10⁷ = 1.7581 × 10⁷ + 22.6 × 10⁵ m'

⇒ m'=mass of steam produced =3.642 × 10⁷ / 22.6 × 10⁵ kg

                                                    = 16.1 grams

3 0
3 years ago
Read 2 more answers
True or false: Increasing the Young’s modulus of a beam in bending will cause it to deflect less.
Alinara [238K]

Answer:

false?

Explanation:

The higher the modulus, the more stress is needed to create the same amount of strain; an idealized rigid body would have an infinite Young's modulus.

5 0
2 years ago
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9. A car accelerates from 3.5 m/s to 17 m/s in 4.5 seconds. Find the acceleration of the car in m/s2.
Citrus2011 [14]
The answer is -3 m/s2
8 0
3 years ago
What is common in elastic collision, inelastic collision and perfectly inelastic collision​
Feliz [49]

Answer:

A perfectly elastic collision is defined as one in which there is no loss of kinetic energy in the collision. An inelastic collision is one in which part of the kinetic energy is changed to some other form of energy in the collision.

7 0
3 years ago
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why is the freezer compartment of a refrigerator kept at the top in terms of conduction convection and radiation​
Ulleksa [173]

Answer:

The freezer compartment is at the top of a fridge because cool air sinks. (convection current)

Explanation:

4 0
2 years ago
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