Struck by lightning. Lightning strikes can involve currents as high as 25.000 A that last for about 40 μ s. If a person is struck by a bolt of lightning with these properties, the current will pass through his body. We shall assume that his mass is 75 kg. that he is wet (after all. he is in a rainstorm) and therefore has a resistance of 1.0 kΩ. and that his body is all water (which is reasonable for a rough, but plausible, approximation), (a) By how many degrees Celsius would this lightning bolt increase the temperature of 75 kg of water? (b) Given that the internal body temperature is about 37°C. would the person’s temperature actually increase that much? Why or why not? What would happen first?
Struck by lightning. Lightning strikes can involve currents as high as 25.000 A that last for about 40 μ s. If a person is struck by a bolt of lightning with these properties, the current will pass through his body. We shall assume that his mass is 75 kg. that he is wet (after all. he is in a rainstorm) and therefore has a resistance of 1.0 kΩ. and that his body is all water (which is reasonable for a rough, but plausible, approximation), (a) By how many degrees Celsius would this lightning bolt increase the temperature of 75 kg of water? (b) Given that the internal body temperature is about 37°C. would the person’s temperature actually increase that much? Why or why not? What would happen first?
Struck by lightning. Lightning strikes can involve currents as high as 25.000 A that last for about 40 μs. If a person is struck by a bolt of lightning with these properties, the current will pass through his body. We shall assume that his mass is 75 kg. that he is wet (after all. he is in a rainstorm) and therefore has a resistance of 1.0 kΩ. and that his body is all water (which is reasonable for a rough, but plausible, approximation), (a) By how many degrees Celsius would this lightning bolt increase the temperature of 75 kg of water? (b) Given that the internal body temperature is about 37°C. would the person’s temperature actually increase that much? Why or why not? What would happen first?
Checkpoint 4
The figure shows four orientations of an electric di-
pole in an external electric field. Rank the orienta-
tions according to (a) the magnitude of the torque
on the dipole and (b) the potential energy of the di-
pole, greatest first.
(1)
(2)
E
(4)
What is integrated science.
What is fractional distillation
What is simple distillation
19:39 ·
C
Chegg
1 69%
✓
The compound beam is fixed at Ę and supported by rollers at A and B. There are pins at C and D. Take
F=1700 lb. (Figure 1)
Figure
800 lb
||-5-
F
600 lb
بتا
D
E
C
BO
10 ft 5 ft 4 ft-—— 6 ft — 5 ft-
Solved Part A The compound
beam is fixed at E and...
Hình ảnh có thể có bản quyền. Tìm hiểu thêm
Problem
A-12
% Chia sẻ
kip
800 lb
Truy cập )
D Lưu
of
C
600 lb
|-sa+ 10ft 5ft 4ft6ft
D
E
5 ft-
Trying
Cheaa
Những kết quả này có
hữu ích không?
There are pins at C and D To F-1200 Egue!)
Chegg
Solved The compound b...
Có Không ☑
|||
Chegg
10
וח
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