Physics Answers

A 50-kg person stands 1.5 m away from one end of a uniform 6.0-m-long scaffold of mass 70.0 kg. Find the tensions in the two vertical ropes supporting the scaffold.

Three masses are attached to a uniform meter stick, as shown in Figure 12.9.. The mass of the meter stick is 150.0 g and the masses to the left of the fulcrum are m1=50.0gm1=50.0g and m2=75.0g.m2=75.0g. Find the mass m3m3 that balances the system when it is attached at the right end of the stick, and the normal reaction force at the fulcrum when the system is balanced.

A box rests on a frozen pond, which serves as a frictionless

horizontal surface. If a fisherman applies a horizontal force with magnitude 48.0 N to the box and produces an acceleration of magnitude 3.00 m/s², what is the mass of the box?

A box rests on a frozen pond, which serves as a frictionless

horizontal surface. If a fisherman applies a horizontal force with magnitude 48.0 N to the box and produces an acceleration of magnitude 3.00 m/s², what is the mass of the box?

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?