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sergij07 [2.7K]
3 years ago
5

What is the acceleration of this object? The object's mass is 2 kg. Small box with dot in the middle. Arrows originate at dot. A

rrow up and Arrow down are same length. Arrow up labeled F sub norm equals 20 N and Arrow down labeled F sub grav equals 20 N. Arrow to the right is longer than arrow to the left. Arrow to the right is labeled F sub app equals 22 N and arrow to the left is labeled F sub frict equals 14 N. 0 m/s2 4 m/s2 7 m/s2 11 m/s2
Chemistry
1 answer:
hoa [83]3 years ago
6 0

Answer:

4 m/s2

Explanation:

I took the test.

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A piece of iron is heated to 95.0 celsius and then placed in an insulated vessel containing 250. grams of water at 25.0 celsius.
Nana76 [90]

Answer:

c) 387g

Explanation:

Water;

Mass = 250g

Specific heat = 4.184

Initial Temp, T1 = 25 + 273 = 298K

Final Temp, T2 = 35 + 273 = 308K

Heat = ?

H = mc(T2 - T1)

H = 250 * 4.184 (308 - 298)

H = 10460 J

Iron;

Initial Temp, T2 = 95 + 273 = 368K (Upon converting to kelvin temperature)

Mass = ?

Final Temp, T1 = 35 + 273 = 308

Heat = 10460 (Heat lost by iron is qual to heat gained by water)

Specific heat = 0.45

H = mc(T2-T1)

M = 10460 / [0.45 (308 - 368)]

M = 10460 / 27

M = 387g

7 0
3 years ago
What is the volume of 2.0 mol CO2 at STP?
Andrew [12]

Answer:

44.8 litres is the answer to the question

6 0
3 years ago
Identifica los dos pares conjugados acido-base en cada una de las siguientes reacciones
aliya0001 [1]

Answer:

PULLIN OUT THE COUPE AT THE LOT?

Explanation:

TOLD EM F*&*& 12 F*(&*(& SWAT

8 0
3 years ago
What is the ratio of hydrogen atoms to sulfur atoms in sulfuric acid, h2so4?
Vsevolod [243]
I think it's 2:1 or 2:1:4. I mostly think it's 2:1 though. (:
4 0
4 years ago
SHOW YOUR WORK!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!
WARRIOR [948]

Answer:

1.375%

Explanation:

Percent Error = measured value - accepted value/ accepted value x 100

Measured Value: 15.78

Accepted Value: 16.00

Work:

\frac{15.78-16.00}{16.00} * 100

\frac{-.22}{16} * 100 = -1.375

You cannot have a negative percentage. Therefore the answer is 1.375%

4 0
3 years ago
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