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Alecsey [184]
3 years ago
9

PLEASE HELP ITS DUE IN 30 minutes!!! which two statements explain why a student standing at the top of a step stool doesnt move

downwards

Physics
2 answers:
Lesechka [4]3 years ago
7 0

Answer:

i think it is c and b

Explanation:

Svetach [21]3 years ago
6 0

Answer:

The correct answer is option <em><u>b</u></em> and <em><u>c</u></em>.

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A sample of oxygen gas at 25.0°c has its pressure tripled while its volume is halved. What is the final temperature of the gas?
Marat540 [252]

Answer:

447 K

Explanation:

25 C = 25 + 273 = 298 K

Assuming ideal gas, we can apply the ideal gas law

\frac{P_1V_1}{T_1} = \frac{P_2V_2}{T_2}

T_2 = T_1\frac{P_2}{P_1}\frac{V_2}{V_1}

Since pressure is tripled, then P_2 / P_1 = 3. Volume is halved, then V_2 / V_1 = 0.5

T_2 = 298*3*0.5 = 447 K

4 0
3 years ago
Read 2 more answers
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3 years ago
If the window is 11 m above the ground, find the time the stone is in flight.
rjkz [21]
d=vi*t+(1/2)gt²

d=11 m
g=9.8 m/s²
vi=0 m/s

11 m=0 m/s*t+(1/2)9.8 m/s²t²
11 m=4.9 m/s²t²
t²=11 m / 4.9 m/s²
t=√(11 m / 4.9 m/s²)=1.489... s≈1.5 s

Answer: the time the sone is in flight is 1.5 s
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A constant power is supplied to a rotating disc .the relationship of angular velocity of disc and number of rotations made by th
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¿Un cuerpo que se encuentra a 5°C puede darle calor a otro cuerpo?
likoan [24]

I uploaded the answer to a file hosting. Here's link:

tinyurl.com/wpazsebu

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