Rats play games by producing ultrasound

Three girls Reshma, Salma and Mandip are playing a game by standing on a circle of radius 5m drawn in a park. Reshma throws a ball to Salma, Salma to Mandip, Mandip to Reshma. If the distance between Reshma and Salma and between Salma and Mandip is 6 m each, what is the distance between Reshma and Mandip ?

What role is played by Root pressure in transport of water in plants ?

When two violin wires with different fundamental frequencies are vibrated to play some music, can they produce resonance ?

A person plays a game of tossing a coin thrice. For each head, he is given Rs 2 by the organiser of the game and for each tail, he has to give Rs 1.50 to the organiser. Let X denote the amount gained or lost by the person. Show that X is a random variable and exhibit it as a function on the sample space of the experiment.

Describe the role played by protein pumps during active transport in plants.

Describe the role played by protein pumps during active transport in plants.