Specific Heat Capacity J/kg,kcal, Cal/g.c
shaukat313 shaukat313
princeameta2882007 princeameta2882007
- 08.04.2021
- Science
- Secondary School
princeameta2882007 princeameta2882007 Explanation:
C)↔cal/(g.C) 1 cal/(g.C) = 4186.7981879537 J/(kg. C) J/(kg. C)↔kcal/(kg.
New questions in Science
1 State & explain the principle of conservati of angular momentum? on illastration. use a Suitable Do we use it in daily life? when ouro When a pendulum swings, potential energy (PE) at the peak converts to kinetic energy (KE) at the bottom, then back to PE as it rises, demonstrating en … ergy conversion, not loss, with total mechanical energy constant in an ideal system; however, in reality, air resistance and friction transform this mechanical energy into heat and sound, causing the bob to slow down and stop, which isn't a violation but a transformation of energy to the environment (surroundings), making the pendulum-plus-air system's total energy conserved. Energy Transformation During Oscillation (Ideal Case) At Highest Point (A): Pendulum is held aside. It has maximum Potential Energy (PE) and zero Kinetic Energy (KE). Swinging Down (A to B): PE decreases as height drops, converting into increasing KE. At the lowest point (B), PE is minimum (zero), and KE is maximum. Swinging Up (B to C): KE decreases as the bob rises, converting back into PE. At the opposite highest point (C), KE is zero, and PE is maximum again. Total Energy: In an ideal, frictionless scenario, the sum of PE + KE remains constant throughout the swing, illustrating the law. Why It Stops (Real-World Case) Energy Loss: Air resistance (drag) and friction at the pivot oppose the motion, doing work against the pendulum. Conversion to Heat: This work converts the pendulum's mechanical energy into thermal energy (heat) and sound, dissipating it into the air and pivot. < >Damping< >: This gradual energy loss causes the amplitude (height of swing) to decrease until the bob stops at its resting position. Is It a Violation? No, it's not a violation: The total energy of the entire system (pendulum + air + surroundings) remains constant. The energy isn't destroyed; it's just transformed from organized mechanical energy (swinging) to disorganized thermal energy (heat) in the environment, which is still conserved energy. explain the phenomenon of total internal refraction An alloy circular bar ABCD 3m long is subjected to a tensile force of 50 Nas shown in figure. If the stress in the middle portion BC is not to exceed … 150 MPa, then wheat should be its diameter. Find the length of the middle portion, if the total extension of the bar should not exceed by 3 mm. Take E as 100 GPa. que.(H)(1):- Name any three root modifications and describe their significance Previous NextTừ khóa » J/g C To Cal/g C
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