28. A person walks 12.0° north of west for 55.0 m and 63.0° south of west for 25.0 m. What is the magnitude of his displacement? Solve analytically.
a. 10.84 m
b. 65.1 m
c. 66.04 m
d. 80.00 m

question1

1,000 tons

question2

3: 8

question 3

store d

step-by-step explanation:

answer: 802.3 kilo joules of energy represents 191.75 kilo calorie of energy.

explanation:

energy released during combustion of one mole methane = 802.3 kilo joules

if 1 kilo joule = 0.239006   kilo calorie

then ,802.3 kilo joule will be = 802.30.239006 kilo calorie

802.3 kilo joule = 191.75 kilo calorie

hence, the energy in kilo calorie is 191.75 kilo calorie.

what is the speed of a softball that travels 20m in 2secs

speed = 20/2 = 10 m/s

firearm identification is the process of analyzing the bullets and cartridge cases left at a crime scene to determine if they came from a particular firearm. marks on the bullets and cartridges may be common to every firearm of that type. these are called class characteristics.