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i) Calculate the energy lost by the water when temperature decreases to 0 C
How much energy is needed to change 5g of ice at 0 degrees Celsius to water at 20 degrees Celsius, given that specific heat capacity of water is 4. 2 J / g degrees Celsius.
mercury pressure. Assuming the molecular diameter to be 3Ȧ. Two grams of
the molecule of the gas occupy 44.8 L at NTP. Consider the temperature of
the chamber to be 273K.
Two objects are identical and small enough that their sizes can be ignored relative to the distance between them, which is 0.278 m. In a vacuum, each object carries a different charge, and they attract each other with a force of 1.62 N. The objects are brought into contact, so the net charge is shared equally, and then they are returned to their initial positions. Now it is found that the objects repel one another with a force whose magnitude is equal to that of the initial attractive force. What is the initial charge on each object, the answer to part (a) being the one with the greater (and positive) value?
a 54 newton horizontal force pushes a 5.0 kg mass sitting on a horizontal surface. Additionally , the horizontal surface exerts a 30 newton frictional force on the mass. What is the acceleration of the mass?
#340153 on Dec 2023