Answer:
• A prism is a polygon and hedron like substance [ polyhedron ] with polygonal edges hence forming rectangular, rhombical or pallarelogramic surfaces.
• There are four prism types;
- Reflecting prisms
- Dispersion prisms
- Displacement prisms
- Rotation prisms.
Well here in the sticks we call 'em fletchings haha
Chemical reactions happen when you breathe, eat, drink, etc. Chemical reactions make you go through puberty, chemical reactions makes things enjoyable, or sad. Chemical reactions happen in batteries, cellphones, computers, vehicles.
<span>Chemical reactions are everywhere and too numerous for me to think about all the possibilities.</span>
Answer:
a) 35.75 ft/s
b) 45 ft
Explanation:
<u>Given </u>
Weight W = 100 lbf
mass(m) = 100*32.174/32.2=99.92 lb
decrease in kinetic energy ΔKE = -500 ft.lbf
increase in kinetic energy ΔPE= 1500 ft.lbf
initial velocity V_1 = 40 ft/s
initial height h_1 = 30 ft/s
The gravitational acceleration g = 32.2 ft/s2 Required
(a) Final velocity V_2 (a) Final elevation h_2
<u>Solution </u>
Change in kinetic energy is defined by
ΔKE = .5*m *( V_2 ^2-V_1^2)
Change in potential energy is defined by
ΔKE = W *( h_2 -h_1 )
Then,
-500=.5*99.92*1/32.174*(V_2 ^2-40^2)
V_2=35.75 ft/s
1500 = 100 x (h_2 — 30)
h_2= 45 ft