5. 500cm of water is to be heated from room temperature (28°C) to 100°C in order to prepare hot cup of coffee. (a) What is the minimum heat required? (b) How long will
it take to heat the water with a 1009W heating coil which has a heating efficiency of
70%?
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i will answer your question if you answer mine

initial speed when it is dropped is 150 ft/s

now at the same moment the acceleration due to gravity is perpendicular to its velocity

so as we know that

now we have centripetal acceleration a = 32 ft/s^2 as its perpendicular to velocity

while tangential acceleration at the same moment will be zero

so

now radius of curvature is given as

so the radius of curvature just after it is dropped is 703.125 ft

1) estimating temperature to the nearest tenth of a degree

2) estimating the mass of the sample to the nearest tenth of a gram

4) the position of the cups of sand and water under the heat lamp