(urgent 75 points)you are given two same party balloons (one filled with helium and the

second is empty and rolled), the scale, graduated mass of 100 grams, and

a pile of paper clips. show how you would:

• calculate the volume of the balloon (no ruler).

• how many balloons you would need to lift 126lbs person?

An object is dropped from a tower, 400 ft above the ground. the object's height above ground t seconds after the fall is s(t)equals400 minus 16 t squared. determine the velocity and acceleration of the object the moment it reaches the ground. the velocity of the object the moment it reaches the ground is nothing ft/s.

What pressure difference is required between the ends of a 2.0-m-long, 1.0-mm-diameter horizontal tube for 40 c water to flow through it at an average speed of 4.0 m/s?

Wavelength of 125 meters is moving at a speed of 10 m/s. what is it's frequency?