Question
What is greenhouse effect?
What is greenhouse effect?
Greenhouse effect is a phenomenon that heats the earth’s surface. The greenhouse gases prevent infrared dilations from escaping the earth which results in heating of the earth’s surface.
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How is ultrasound used in cleaning?
What is biological control?
Define water pollution.
Why do we hear the sound produced by the humming bees while the sound of vibrations of pendulum is not heard?
| Temperature: | 10°C | 20°C | 40°C | 60°C | 80°C |
| Solubility: | 24g | 37g | 41g | 55g | 66g |
Aditi clapped her hands near a cliff and heard the echo after 4 seconds. What is the distance of the cliff from her if the speed of sound is taken as 346ms-1.