Answer:
P car = 1500×400/12= 50,000kgm/s
P electron= 9.1×3.5×10^(-31+6)
= 31.85×10^-25 kgm/s
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Answer:
energy is transformed when your rubbing your hands together because of the mechanical energy of your hands moving together creates both sound energy and heat energy from the friction and chemical energy is created when the atoms and molecules in your hands interact
Explanation:
Answer:
50 grams,0.5 kilograms, 1000 grams, 5 kilograms
Explanation:
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Answer:
a) 4 s
b) 36 m/s²
c) 54 m
Explanation:
s = 2t³ – 24t + 6
a) Find t when v = 72 m/s.
v = ds/dt
v = 6t² – 24
72 = 6t² – 24
6t² = 96
t = 4
b) Find a when v = 30 m/s.
a = dv/dt
a = 12t
When v = 30:
30 = 6t² – 24
6t² = 54
t = 3
a = 36
c) Find Δs between t = 1 and t = 4
Δs = (2(4)³ – 24(4) + 6) – (2(1)³ – 24(1) + 6)
Δs = 38 – (-16)
Δs = 54