Other Physics Answers

How far did a biker travel at a velocity of 7.0 m/s after his bike accelerated at 0.70 m/s² if his initial velocity was 2.50 m/s? 

What acceleration do you need to attain a velocity of 8.0 m/s in order to travel 500.0 m if you started from rest?

How long will it take you to attain a velocity of 7.50 m/s at an acceleration of 0.70 m/s² if you were walking at 4.0 m/s?

At what velocity did you travel 250.0 m after 4.0 min if you started from rest?

1) Derive the expression of workdone by the position on the cylinder in terms of the pressure and the volume of fluid in the cylinder

2) A unit of a fluid at a pressure of 3 bar and with a specific volume of 0.18m³/kg contained in a cylinder behind a piston that expands reversibly to a pressure of 0.6 bar the equation of pressure is taken as below p= c/v² where c is a constant. Calculate the workdone during the process.

Where is this symbol  ≡  ( the triple sign ) used in physics. How do we use it in different sections in physics. Please give full explanation for ( ≡ )

Give 3 or 4 different examples how to use it.

In the book it is used many times in different ways and different laws:

such as:

N ≡ kg.m.s^-2

also,

x₁ ≡ x(t₁)

But it is understandable.

Determine the center of mass of three plates filled with food on a table. The plates have the following masses, corresponded to by their arbitrary coordinates; m1 = 2 kg; (-3, -1) m2 = 3 kg; (2, 2) m3 = 5 kg; (3, -3) 

Sam, Choi, Mich, Pia, and Sheen are on a 6’ x 4’ rectangular balsa. They are having trouble in keeping the balsa balanced as they are unaware of their center of mass. Find their center of mass, given the following: Sam is at 3 feet east, and 2 feet north of the balsa’s geometric center. She weighs 78 kg. 

Sam, Choi, Mich, Pia, and Sheen are on a 6’ x 4’ rectangular balsa. They are having trouble in keeping the balsa balanced as they are unaware of their center of mass. Find their center of mass, given the following: Choi is 2 feet east, and 2 feet south of the geometric center. He weighs 52 kg.