When you store a petri plate, which side should be on the bottom? Why?
Homework Answers
The petri plate should be stored upside down which means the bottom should be on the upper side because when you store a petri plate, condensation takes place and if the plate is not inverted then water droplets will fall on the colonies and hinder the development. Evaporation of water from media can cause media dryness and this can affect microbial growth but when plates are stored in inverted position, this decreases the rate of water evaporation and results in better microbial growth.
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When you store a petri plate, which side should be on the bottom?
Why?
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A parallel-plate air capacitor is to store charge of magnitude 290 pC on each plate when the potential difference between the plates is 40.0 V. If the area of each plate is 6.80 cm^2, what is the separation between the plates? Express your answer with the appropriate units. If the separation between the two plates is double the value calculated in part (a), the capacitor to store charge of magnitude 290 pC on each plate? Express your answer with the...
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4. One side of a thin metal plate is illuminated by the sun. When the air temperature is T,, the temperature of the illuminated side is T, and that of the opposite side is T2. What will be the temperatures of each sides be, if another plate of double thickness is used ? (temperature difference with surrounding is small) 2TⓇ + T/T2 – T(3T– T2) – Tż T? +T; T2 – T. (3T7 - T2) – T2 (T1 - To)...
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