2.Three sets of temperatures in Celsius, Fahrenheit and Kelvin scales respectively are given below. In which set do the thermome
1 answer:
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Answer:
the mass of the body is 0.02 kg.
Explanation:
Given;
relative density of the oil, = 0.875
mass of the object in oil, = 0.013 kg
mass of the object in water, = 0.012 kg
let the mass of the object in air =
weight of the oil,
weight of the water,
The relative density of the oil is given as;
Therefore, the mass of the body is 0.02 kg.
Answer:
C. 30.6m
Explanation:
To find the height of the tower, we are to use Newtons law of motion to solve this problem. Since the penny is falling from the top of the tower, it is acted by the acceleration due to gravity. The formula to be used is:
Where H is the height of the tower, t is the time taken to hit the ground, u is the initial velocity and g is the acceleration due to gravity.
Given that, t = 2.5 s, g =9.8 m/s², u = 0 m/s (at the top of tower)
Answer:
160N
Explanation:
Moments must be conserved - so.