Physics Properties Of Matter Level: Misc Level
What force on the plunger would be needed to push fluid into a vein where the gauge pressure is 17.8 mm -Hg? Answer for the instant just before the fluid starts to move.
Physics Properties Of Matter Level: Misc Level
A 2.47 N force is applied to the plunger of a hypodermic needie. If the diameter of the plunger is 1.11 cm and that of the needle 0. 196 mm, with what force does the fluid leave the needle?
Physics Properties Of Matter Level: Misc Level
If wind blows at 27.8 m/s over your house, what is the net force on the roof if its area is 237 m^2?
Physics Properties Of Matter Level: Misc Level
A 2.70 kg piece of wood (specific gravity =0.50 ) floats on water. What minimum mass of lead, hung from it by a string, will cause it to sink?
Physics Properties Of Matter Level: Misc Level
A 70.3 kg person has an apparent mass of 48.7 kg (because of buoyancy) when standing in water that comes up to the hips. Estimate the mass of each leg. Assume the body has SG =1.00
Physics Properties Of Matter Level: Misc Level
A spherically shaped balloon has a radius of 9.54 m, and is filled with helium. How large a cargo can it lift, assuming that the skin and structure of the balloon have a mass of 978 kg? Neglect the buoyant force on the cargo volume itseIf.
Physics Properties Of Matter Level: Misc Level
Calculate the total force of the atmosphere acting on the top of a table that measures 1.52 m x 2.77 m.
Physics Properties Of Matter Level: Misc Level
If 5.75 liter of antifreeze solution (specific gravity = 0.800) is added to 3.95 liter of water to make a 9. 70 liter mixture, what is the specific gravity of the mixture?Assume the water is at a temperature of 4 degrees C.
Physics Force & Laws Of Motion Level: Misc Level
A 10 000 kg bridge of length 10 m is supported at both ends. If a 2000 kg car is parked on the bridge 3. 0 m from the left support, what are the supporting forces at the left and right ends?
Physics Circular Motion Level: Misc Level
A bike wheel has a diameter of 0. 80 m and a mass of 2. 0 kg.
(a) If the bike travels with a linear speed of 1.5 m/s, what is the angular speed of the wheel?
(b) What is the angular momentum of the wheel? (Consider the wheel to be a thin ring.)
Physics Rotational Mechanics Level: Misc Level
A 4 kg mass is hung from a string which is wrapped around a cylindrical pulley. If the mass accelerates downward at 4. 90 m/s2, what is the mass of the pully?
Physics Rotational Mechanics Level: Misc Level
A 1. 8 kg solid disk pulley of radius 0. 11 m rotates about an axis through its center.
(a) What is its moment or inertia?
(b) Staring from rest, a torque of 0. 22 N. m will produce what angular acceleration?
Physics Force & Laws Of Motion Level: Misc Level
An 82. 0 kg painter stands on a long horizontal board 1.55 m from one end. The 15.5 kg board is 5.50 m long. The board is supported at each end.
(a) What is the total force provided by both supports?
(b) With what force does the support, closet to the painter, push upward?
Physics Circular Motion Level: Misc Level
A bicycle is moving 4. 0 m /s. What is the angular speed of a wheel if its radius is 30 cm?
Physics Electrostatics Level: Misc Level
A spherical volume (radius = R ) is filled with a nonuniform stationary charge which has a volume density that varies as that varies as rho = alpha r , where r, is the distance from the center of the sphere. Find an expression for the electric field at a point r, from the center of the, where where r is greater than R.
