Need help with only Part C
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Need help with only Part C
![4.
a.
A weightlifter curls a 100 kg bar, raising it each
time a distance of 0.61 m. How many times must he
repeat this exercise to burn off all the energy in one
energy bar that contains 22 g of carbohydrates? You can
assume 25% efficiency and use g = 9.8 m/s². [Watch
out: need to burn off ALL energy!] [Answer in whole
integer]
TABLE 11.1 Energy in fuels
Fuel
Hydrogen
Gasoline
Fat (in food)
Coal
Carbohydrates
(in food)
Wood chips
Energy in 1 g of fuel
(in kJ)
121
44
38
27
17
15](/v2/_next/image?url=https%3A%2F%2Fcontent.bartleby.com%2Fqna-images%2Fquestion%2Fc6577ebe-9df1-401c-8d05-cde8be3f88aa%2F3323bf10-55d9-4485-ba63-ee9b35e3a225%2Fr52mhev_processed.png&w=3840&q=75)
![C.
Determine the minimum angle at which a road should be banked so that a car travelling
at 20 m/s can safely round the curve without the aid of friction. The radius of the curve is 200.0
m. [Answer in 3 significant figures]](/v2/_next/image?url=https%3A%2F%2Fcontent.bartleby.com%2Fqna-images%2Fquestion%2Fc6577ebe-9df1-401c-8d05-cde8be3f88aa%2F3323bf10-55d9-4485-ba63-ee9b35e3a225%2Fzuuwwfj_processed.png&w=3840&q=75)
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