Answer:
It has no shape of its own but has a definite volume.
Explanation:
Gases have no shape but a definite volume
<em><u>1.car</u></em><em><u> </u></em><em><u>towing</u></em>
<em><u>2.pulling</u></em><em><u> </u></em><em><u>bucket</u></em><em><u> </u></em><em><u>of</u></em><em><u> </u></em><em><u>water</u></em>
<em><u>3.gym</u></em><em><u> </u></em><em><u>equipment</u></em><em><u> </u></em>
<em><u>4.crane</u></em><em><u> </u></em><em><u>machine</u></em>
<em><u>5.tug</u></em><em><u> </u></em><em><u>of</u></em><em><u> </u></em><em><u>war</u></em>
Answer:
354.72 m/s
Explanation:
= mass of lead bullet
= specific heat of lead = 128 J/(kg °C)
= Latent heat of fusion of lead = 24500 J/kg
= initial temperature = 27.4 °C
= final temperature = melting point of lead = 327.5 °C
= Speed of lead bullet
Using conservation of energy
Kinetic energy of bullet = Heat required for change of temperature + Heat of melting
![(0.5) m v^{2} = m c (T_{f} - T_{i}) + m L\\(0.5) v^{2} = c (T_{f} - T_{i}) + L\\(0.5) v^{2} = (128) (327.5 - 27.4) + 24500\\(0.5) v^{2} = 62912.8\\v = 354.72 ms^{-1}](https://tex.z-dn.net/?f=%280.5%29%20m%20v%5E%7B2%7D%20%3D%20m%20c%20%28T_%7Bf%7D%20-%20T_%7Bi%7D%29%20%2B%20m%20L%5C%5C%280.5%29%20v%5E%7B2%7D%20%3D%20c%20%28T_%7Bf%7D%20-%20T_%7Bi%7D%29%20%2B%20L%5C%5C%280.5%29%20v%5E%7B2%7D%20%3D%20%28128%29%20%28327.5%20-%2027.4%29%20%2B%2024500%5C%5C%280.5%29%20v%5E%7B2%7D%20%3D%2062912.8%5C%5Cv%20%3D%20354.72%20ms%5E%7B-1%7D)