Search & Filtering
If we put a 12 kg piece of Gold with a temperature of 125 degrees Celsius into a bucket of water with a mass of 8 kg and a temperature of 2 degrees Celsius. What would the final temperature be? *
situation: storage of different substances at home needs careful attention . Alcohol, acetone, and hair sprays even gasoline should be taken care of to avoid fire . where should these substances be stored ? why do we need extra precaution in keeping them at home ? relate your answer to intermolecular forces .
A gas expands linearly from 4.42 bar to 3.1 bar behind a piston from a volume 0.12 m3 to 0.3 m3. What is the work done during the process? Give your answer in kJ with 3 significant digits.
A weight of 100N is hung into two ropes. The first rope projects 35 degrees left from the vertical, while the second rope projects horizontally on the right. Find the tension in each of the ropes.
During an online exam, a student’s data balance suddenly hits zero. In order to resume the exam, he must run to the store to buy a promo. If the student’s mass is 66 kg and runs at a velocity of 4 feet per second,
- solve for his kinetic energy; and
- solve for his power.
A skydriver jumps out of an aircraft, which is 6000m above the ground at what time on the graph did the sky diver opens her parachute
What is the length of the same rail road track on the cold winter day when the temperature is 0 degree Celsius
2. 20 g of ice at 0°C is placed into an empty 500 g glass bottle. What should the minimum temperature of the bottle be in order for all the ice to melt? (5 points) (Calass = 840 J/kg.°C, Lv.ice = 333 kJ/kg)
A gas in a cylinder fitted with a piston undergoes a cycle composed of three processes. First the gas expands at constant pressure with a heat addition of 404 J and a work output of 10.0 J. Then it is cooled at constant volume by a removal of 50.0 J of heat. Finally, an adiabatic process restores the gas to its initial state. Determine(i) the work of the adiabatic process and (ii) the stored energy of the gas at each of the other two states if its stored energy in the initial state is assigned the value of zero. Sketch the cycle on the pressure – volume and temperature – entropy diagrams.
A cylinder contains 0.5 m3 of a gas at 1 × 105 N/m2 and Z temperature in °C (For Z value refer Table. 1). The gas is compressed to a volume of 0.125 m3 , the final pressure being 6 × 105 N/m2 . Determine: (i) The mass of gas. (ii) The value of index ‘n’ for compression. (iii) The increase in internal energy of gas. (iv) The heat received or rejected by the gas during compression
