Answer: 3.6m
Explanation:
Work done = force * distance
Distance = workdone / force
D= 1762.2J / 489.5n
D= 3.6m
PE = mgh
so (75kg)(9.8m/s2)(100m) = 73,500 Joules
KE = 1/2 m * v^2
so (1/2)(75kg)(60m/s)^2 = 135,000 Joules
ME = 208,500 Joules
You need 5 blocks of the smaller object to contain the same amount of volume of the bigger object
Answer:
d. 50 C
Explanation:
In this problem, we have to add 800 ml of water at 20 Celsius to 800 ml of water at 80 Celsius.
According to the 2nd law of thermodynamics, heat transfers from hot to cold temperature.
The quantity of both the different waters is equal so this makes it very easy. All we have to do is find the mean of both the temperatures:
Final temperature = (20 C + 80 C)/2
= 50 Celsius
Answer:
Which of the following is the best example of a good hypothesis?
B. A cheetah can run faster than a tiger This Is A good Hypothesis Because You Can Test this With a Experiment
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