i need 14 and 4 part C only thank you 14. What current (in A) must be produced b
ID: 1628335 • Letter: I
Question
i need 14 and 4 part C only thank you
14. What current (in A) must be produced by a 12.0 V battery-operated bottle warmer in order to heat 74.0 g of glass, 280 g of baby formula, and 2.50 102 g of aluminum from 20.0°C to 90.0°C in 4.50 min? (Assume the specific heats of glass, baby formula, and aluminum are 840 J/(kg · °C), 4,186 J/(kg · °C), and 900 J/(kg · °C),respectively.)
4. A large cyclotron directs a beam of He++ nuclei onto a target with a beam current of 0.210 mA.
a) How many He++ nuclei per second is this? 6.56E14 is correct
b)How long (in s) does it take for 1.25 C to strike the target? 5952 sec is correct
c) How long (in s) before 1.15 mol of He++ nuclei strike the target? i got 9.17E8 but its INCORRECT
what current (in A) must be produced by 12.0 V batteroperated bottle warmer i, Order to heat 74.0 of glass, 280 g of baby brnia, and 2.50 x LO'ofah,minum from 200°C to 90.0°C in 4.50 min? (Aawme the specne heats of glass, baby formula, and aurirum re 840 VCkg·°C), 4,186/kg . "C), and 900 ar, c), respectively.) Additional Materials ReadingExplanation / Answer
solving question 14
net heat flow=0.074*840*(70) + 0.28*4186*70 + 0.25*900*70 =102146.8 J
power=net heat/time=378.32 W
power=V*I
I=power/V=31.5 A
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