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lesya692 [45]
3 years ago
15

PLEASE HELP ASAPPP

Physics
1 answer:
My name is Ann [436]3 years ago
4 0

Answer:

43.2^{\circ}C

Explanation:

The change in temperature of the sample of alcohol is given by:

\Delta T=\frac{Q}{mC_s}

where

Q = 890 J is the amount of heat provided to the sample

m = 16.6 g is the mass of the sample

C_s = 2.47 J/gC is the specific heat of alcohol

Solving the equation,

\Delta T = \frac{890 J}{(16.6 g)(2.47 J/gC)}=21.7^{\circ}C

And since the initial temperature was

T_i = 21.5^{\circ}C

the final temperature is

T_f = T_i + \Delta T=21.5^{\circ}C + 21.7^{\circ}C=43.2^{\circ}C

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A thin ring of radius 73 cm carries a positive charge of 610 nC uniformly distributed over it. A point charge q is placed at the
kow [346]

Answer:

q = - 93.334 nC

Explanation:

GIVEN DATA:

Radius of ring  73 cm

charge on ring 610 nC

ELECTRIC FIELD p FROM CENTRE IS AT 70 CM

E  =  2000 N/C

Electric field due tor ring is guiven as

E = \frac{KQx}{[x^2+ R^2]^{3/2}}

E = \frac{9\time 10^9 \times 610\times 10^[-9} 0.70}{(0.70^2 + 0.73^2)^{3/2}}

E1 = 3714.672 N/C

electric field due to point charge q

E  =\frac[kq}{x^2}

E = \frac{9\times 10^9 \times q}{0.70^2}

E2 = 1.837\times 10^{10}\times q

now the eelctric charge at point P is

E = E1 + E22000 =  3714.672 + 1.837\times 10[10} \times q

solving for q

q = - 93.334 nC

7 0
3 years ago
Answer for a thanks
mariarad [96]
Well, if your question is how light affects plants,

then you would want to design an experiment that plays aruond with the amount of light a plant gets

thus the thing changing (or variable) would be amount of light
7 0
3 years ago
An adult human is 60 percent water; a third of this water is in extracellular fluid, and 20 percent of extracellular fluid is in
Yanka [14]

Answer:

32 pounds

Explanation:

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200 * 60% = 200*0.6 = 120 pounds

Of the 120 pounds, a third of this is extracellular fluid, the amount of extracellular fluid is

120 / 3 = 40 pounds

20 % of this is in the blood, which amounts to

40 * 20% = 40 * 0.2 = 8 pounds

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5 0
3 years ago
The average distance from earth to the sun is 150 megameters. what is that distance in meters?
alexira [117]
It is 150,000,000 meters!!
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3 years ago
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Effectus [21]

Answer:

id say D

Explanation:

because its the only answer that has to do with colors and visable light

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I am sorry if i am wrong, let me know tho!

8 0
3 years ago
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