Other Physics Answers

6. Vector A is 3.00 units in length and points along the positive x-axis. Vector B is 4.00 units in length and points along the negative y-axis. Use graphical methods to find the magnitude and direction of the following vectors:

a. A + B

b. A - B

C. A + 2B

d. B - A

David and Karen push against the wall. David pushes with the fourth of 450 N for 60 seconds. Karen purchase with the force of 350 N for 120 seconds. How much work do they each do?

a. M1= your mass in kg

b. M2= any body or any object and

determine the mass in kg.

C. R = 2.2 meters

I. Solve for Fg.

I. R is constant, Mjis doubled,

Mais constant, Find Fe, Will the

attraction become stronger or

weaker?

Ill. M is constant, Me is constant,

R is doubled, Solve for Fg . Will it

become weaker or stronger?

IV. M1 is constant, My is constant,

R is reduced to half. What is Fe?

Will it become stronger or

weaker?

Average Capillary radius is 3um, and average length of a capillary is 0.76mm. The number of capillaries in human boday at one time are 10^10. Estimate the total surface area of all the capillaries available at any one time .

It is 1.5km from your hostel to the lab.As part of your physical fitness program, you should run that distance at 10Km/hr which uses up energy at the rate of 700Watt or you could walk at 3 Km/hr which uses 290watt energy.which choice would burn more energy..??and how much energy would it burn in joules.?

Biological Tissues are typically made up of 98% water.Given that the density of water is 1.0x10^-3 kg/m3. Estimate the mass of a heart of a young man.

b: mass of a cell with a diameter of 0.5 x 10^-6 m

The following are exaples of forces. Describes how each of one acts ona car that is parked on the road.

a) gravity

b) normal reaction force of the road

A box is pulled to the right with a force of 65 N at an angle of 58 degrees to the horizontal. The surface is frictionless. What is the net force in the x-direction?

What is the angular acceleration of a ball that starts at rest and increases its angular

velocity uniformly to 5 rad/s in 10 s?

an unknown mass is attached to the end of an ideal spring with a force constant 100 N/m. the mass vibrates in SHM with a frequency of 5.0 hz. find (a ) the period of oxcillation ,(b) the angular frequency, and (c) the mass of the body