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a. the temperature of 200g of water increases from 20 0C to 50 0C in 10 minutes. Calculate:
i. the amount of heat gained by the water
ii. the average rate at which the water is gaining heat
(specific heat capacity of water = 4200 J kg-1 0C-1)
b. Determine the amount of heat that must be removed from 1 kg of water at 40 0C to convert it to ice at -5 0C.
(Obtain any relevant data that you need from the internet. Cite the source of that data in your answer)
How many moles of KCl are produced from 2.50 moles K ?
A rock is thrown off the cliff horizontally with the speed of v = 12 m/s. The cliff is h=47 meter high. Find the speed of the rock once it hits the water in m/s. Give your answer with one decimal place.
A stone is thrown from a point A with speed 27 m/s at an angle of 26 degree below the horizontal. The point A is 25 m above the horizontal ground. Find the horizontal range of the stone in meter. Give your answer with one decimal place.
When an electron is added to the valence shell
1) Differentiate between signaling theory and human capital theory and argue for or against each theory?
Per capita real GDP is an indicator to measure welfare. However, it has important limitations to measure welfare. Briefly discuss some of these limitations while using Per capita real GDP as a measure of welfare
A fan blades start from rest and move with a constant angular acceleration and reaches an angular speed of 14.0rad/s.find (a) the magnitude of the angular acceleration of the wheel
(B) the angle (in radians) through which it rotates in this time.
What is physics
A bakeshop owner determines the number of boxes of pandesal that are delivered each day. Find the mean of the probability distribution shown.
#339914 on Dec 2023