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qwerty123
Questions and answers by visitors named
qwerty123
Questions (11)
Microwave ovens emit microwave radiation that is absorbed by water as heat. Suppose that the wavelength of the radiation that is
3 answers
1,181 views
A typical laser pointer is rated at 5.0 mW. It outputs red light with a wavelength of about 6300 Angstrom. How many photons of
2 answers
520 views
To eject electrons from the surface of potassium metal, 222kJ/mol of electrons are needed.
a) What minimum frequency of light is
3 answers
1,210 views
What is meant by minimum and maximum energy problems. Are there different equations to find them. What does this conceptually
1 answer
392 views
The height of an isosceles triangle is 4r. The radius of an inscribed circle is r. What is the area of the triangle?
3 answers
621 views
A chemist mixes 200.0mL of 0.800 M Fe(NO3)3 and 300.0 mL of 0.750 M K2Cr04 and enough of either 0.400 M KOH or 0.400 M Pb(no3)2
1 answer
564 views
ratedetrmining-step: 3X(g) + 2Y(g) = 4Z(g)
When 2 moles of gas X and 2 moles of gas Y are placed in a 5.0L vessel, the initial
1 answer
336 views
Find two positive fractions such that if we switch the denominators, the sum afterthe switch is 50 times the original sum.
1 answer
475 views
The sides AB and AC of triangle ABC have lengths of 4 inches and 7 inches, respectively. The median AM is 3.5 inches. What is
3 answers
551 views
Go to:
//mmpc.svsu.edu/54thMMPC-PI-Test.pdf Can you explain why number 12 is D?
3 answers
431 views
a triangle has vertices A, B, and C, and the respective opposite sides have lengths a,b, and c. If a=1, b=3, and C=60, then
1 answer
350 views
Answers (5)
I figured out the answer to my own question. 9(0.75)/c^2=6.75/c^2=(sin^2)B. Using law of cosines, c^2=7. 6.75/7=27/28.
Heat loss rate= q/t= (0.97(2)(28-22))/ thickness of skin.
q=mct c is the specific heat in j per gram times degree celsius 150g*(4.18)(10)=6270 J
sum=(7.4)5=37. 37-11-12-5-3=x=6.
99 - 98.2 = .8 .8 divided by .6 = 1.29...z-score z-score of 1.29...on table =.9015 = 90.15 %
