Answer:
Community trial type of study.
Explanation:
• Since 1945, fluoride was added to Newburgh's water supply.
• Water supply in Kingston was not fluoridated.
• The two communities were experiencing similar tooth decay condition.
• After 10 years, children from Newburgh experienced less tooth decay compared with their counterparts at Kingston, with no side effect on their health.
Answer:
t = 6179.1 s = 102.9 min = 1.7 h
Explanation:
The energy provided by the resistance heater must be equal to the energy required to boil the water:
E = ΔQ
ηPt = mH
where.
η = efficiency = 84.5 % = 0.845
P = Power = 2.61 KW = 2610 W
t = time = ?
m = mass of water = 6.03 kg
H = Latent heat of vaporization of water = 2.26 x 10⁶ J/kg
Therefore,
(0.845)(2610 W)t = (6.03 kg)(2.26 x 10⁶ J/kg)
<u>t = 6179.1 s = 102.9 min = 1.7 h</u>
Where are the followings to help you answer this question ?????
Answer:
The complete question is:
Use a stem and leaf display to organize the following distribution of scores. Use six stems with each stem corresponding to a 10-point interval.
Scores: 16, 42, 53, 41, 69
34, 33, 40, 61, 23
53, 49, 55, 29, 10
44, 64, 51, 21, 39
36, 58, 60, 27, 47
14, 44, 38, 31, 56
The answer is:
The decimal point is 1 digit(s) to the right of the |
1 | 046
2 | 1379
3 | 134689
4 | 0124479
5 | 133568
6 | 0149
Explanation:
Answer:
dial bore gauge
Explanation:
The dial bore gauge measures the inside of round holes, such as the bearing journals. This one tool can measure 2″ up to 6″ diameter holes. Both tools are needed in order to check the interior and exterior dimensions of the crankshaft, rods and engine block journals, as well as the thickness of the bearings themselves