To create the shapes, stars are arranged on a piece of cardboard in the desired configuration. If the stars are placed in a smiley face pattern on the cardboard, for example, they will explode into a smiley face in the sky. In fact, you may see several smiley faces in the sky at one time.
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Answer:
b. electric potential energy.
Explanation:
The energy required to move a charge against the electric field is known as the electric potential energy. As in above case positively charged body is exerting an electric field on the positive charge. As the same charges repel so the charge tend to move away. In order to push it towards the body we need a work done. As it is hard to push the positive charged particle towards the positive electric field. So in the cases like these particle occupies the electric potential energy.
Answer:
2.41 L
Explanation:
We can solve the problem by using the ideal gas equation, which can be rewritten as:
![\frac{p_1 V_1}{T_1}=\frac{p_2 V_2}{T_2}](https://tex.z-dn.net/?f=%5Cfrac%7Bp_1%20V_1%7D%7BT_1%7D%3D%5Cfrac%7Bp_2%20V_2%7D%7BT_2%7D)
where we have:
(initial pressure is stp pressure)
is the initial volume
is the initial temperature (stp temperature)
is the final pressure
is the final volume
is the final temperature
By substituting the numbers inside the formula and solving for V2, we find the final volume:
![V_2 = \frac{p_1 V_1 T_2}{T_1 p_2}=\frac{(1.01\cdot 10^5 Pa)(7.46\cdot 10^{-4} m^3)(428 K)}{(273 K)(4.9\cdot 10^4 Pa)}=2.41\cdot 10^{-3} m^3](https://tex.z-dn.net/?f=V_2%20%3D%20%5Cfrac%7Bp_1%20V_1%20T_2%7D%7BT_1%20p_2%7D%3D%5Cfrac%7B%281.01%5Ccdot%2010%5E5%20Pa%29%287.46%5Ccdot%2010%5E%7B-4%7D%20m%5E3%29%28428%20K%29%7D%7B%28273%20K%29%284.9%5Ccdot%2010%5E4%20Pa%29%7D%3D2.41%5Ccdot%2010%5E%7B-3%7D%20m%5E3)
which corresponds to 2.41 L.