6. Tina has to walk to the shop to buy milk. After walking 150 m, she realizes that sh
does not have enough money, and goes back home. If it took her two minutes to
leave and come back home. If it took her two minutes to leave and come back,
calculate the following:
a.
The time interval (t in seconds) she was out of the house;
b. The total distance (d) that the walked;

In a stagnant pool of water, a crayfish may spend much of its time lying with one side of its carapace near the surface of the water. in this position, it will move the walking legs on that side in a rhythmic back-and-forth motion. explain the likely function of this behavior.

Observations show that interstellar clouds can have almost any shape and

Avertical clean glass piezometer tube has an inside diameter of d = 1 mm and is used to measure pressure in a horizontal pipe carrying water as shown. due to pressure in the pipe, the water at 20c rises into the tube to a height h. if the water pressure in the pipe is p = 500 pa gauge, estimate the height h: (a) without considering surface tension (b) with surface tension (capillary) effects. the contact angle  can be assumed at 30 deg