Share & grow the world's knowledge!
We want to connect the people who have knowledge to the people who need it, to bring together people with different perspectives so they can understand each other better, and to empower everyone to share their knowledge.
A body A of mass 0.5 kg and specific heat 0.85 is at a temperature of 60°C. Another body B of mass 0.3 kg and specific heat 0.9 is at a temperature of 90°C. When they are connected to a conducting rod, heat will flow from
We have to calculate the heat capacity of both bodies and compare the initial temperatures to determine which way the heat will flow. The formula for heat capacity (C) is: C = m × s where: m = mass, s = specific heat. Body A: Cₐ = 0.5 × 0.85 = 0.425 Body B: C_b = 0.3 × 0.9 = 0.27 The body having a hRead more
We have to calculate the heat capacity of both bodies and compare the initial temperatures to determine which way the heat will flow.
The formula for heat capacity (C) is:
C = m × s
where:
m = mass,
s = specific heat.
Body A:
Cₐ = 0.5 × 0.85 = 0.425
Body B:
C_b = 0.3 × 0.9 = 0.27
The body having a higher product of mass and specific heat will have more thermal energy at the same temperature. However, in this case, the temperature plays a major role in deciding where the direction of heat will be.
Initial temperatures:
– A = 60°C
– B = 90°C
As body B has a higher temperature than body A, the heat will flow from B to A.
Click here:
See lesshttps://www.tiwariacademy.com/ncert-solutions/class-11/physics/chapter-10/
In order that the heat flows from one part of a solid to another part, what is required?
To cause heat to move from one end of a solid to another, there must exist a temperature gradient. This would mean that two parts of the solid must differ in temperature as heat flows from the region with higher temperature towards the region of lower temperature. Click here for more: https://www.tiRead more
To cause heat to move from one end of a solid to another, there must exist a temperature gradient. This would mean that two parts of the solid must differ in temperature as heat flows from the region with higher temperature towards the region of lower temperature.
Click here for more:
See lesshttps://www.tiwariacademy.com/ncert-solutions/class-11/physics/chapter-10/
If a body is heated from 27° C to 92.7 °C, then the ratio of their energies of radiations emitted will be
The energy radiated by a body is given by the Stefan-Boltzmann law: E ∝ T⁴ where E is the energy emitted and T is the temperature in Kelvin. To find the ratio of the energies emitted at two temperatures, we use the formula: (E₂ / E₁) = (T₂ / T₁)⁴ First, convert the temperatures from Celsius to KelviRead more
The energy radiated by a body is given by the Stefan-Boltzmann law:
E ∝ T⁴
where E is the energy emitted and T is the temperature in Kelvin.
To find the ratio of the energies emitted at two temperatures, we use the formula:
(E₂ / E₁) = (T₂ / T₁)⁴
First, convert the temperatures from Celsius to Kelvin:
T₁ = 27 + 273 = 300 K T₂ = 92.7 + 273 = 365.7 K
Now, find the ratio:
(E₂ / E₁) = (365.7 / 300)⁴ ≈ (1.219)⁴ ≈ 2.1⁴ ≈ 16
So, the ratio of the energies emitted is 1 : 16.
Click here for more:
See lesshttps://www.tiwariacademy.com/ncert-solutions/class-11/physics/chapter-10/
A perfectly black body is one whose
A perfectly black body is one whose absorptive power is 1. This means it absorbs all the radiation incident upon it, without reflecting or transmitting any. A black body also emits radiation at maximum efficiency for any given temperature. Click here for more: https://www.tiwariacademy.com/ncert-solRead more
A perfectly black body is one whose absorptive power is 1. This means it absorbs all the radiation incident upon it, without reflecting or transmitting any. A black body also emits radiation at maximum efficiency for any given temperature.
Click here for more:
See lesshttps://www.tiwariacademy.com/ncert-solutions/class-11/physics/chapter-10/
What plants are found in the Chilkigarh Kanak Durga Sacred Grove and who protects them?
The Chilkigarh Kanak Durga Sacred Grove in West Bengal is known for its unique medicinal plants, which are deeply connected to traditional practices. The local community safeguards the grove, ensuring these plants are protected for their ecological and cultural significance. Their efforts preserve bRead more
The Chilkigarh Kanak Durga Sacred Grove in West Bengal is known for its unique medicinal plants, which are deeply connected to traditional practices. The local community safeguards the grove, ensuring these plants are protected for their ecological and cultural significance. Their efforts preserve biodiversity while maintaining the grove’s role in traditional medicine and rituals. This highlights the critical role of community involvement in conserving sacred and ecologically vital spaces.
See less