Acork has weight mg and density 25% of water’s density. a string is tied around the cork and attached to the bottom of a water-filled container. the cork is totally immersed. express the tension in the string in terms of the cork weight mg.

Explanation:

Given

Density of Cork

Considering V be the volume of Cork

Buoyant Force will be acting Upward and Weight is acting Downward along with T

Since density of water is more than cork therefore Cork will try to escape out of water but due to tension it will not

we can write as

where T=tension

Thus Tension T is

Taking common

what is the speed of a softball that travels 20m in 2secs

speed = 20/2 = 10 m/s

the answer is ampere

the ampere is used to measure electricity. an ampere is a unit of electric current equal. a unit of measure for the flow of current in a circuit. one ampere is the amount of current flow provided when one volt of electrical pressure is applied against one ohm of resistance.