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1) What is the average pressure on the soles of the feet of a standing 90.0-kg person due to the contact force with the floor? Each foot has a surface area of 0.0219 m2. kPa
2) The maximum pressure most organisms can survive is about 1000 times the atmospheric pressure. Only small, simple organisms such as bacteria can survive such high pressures. What then is the maximum depth at which these organisms can live under the sea (assuming that the density of seawater is 1025 kg/m3)? km
3) A nozzle of inner radius 1.08 mm is connected to a hose of inner radius 8.66 mm. The nozzle shoots out water moving at 25.0 m/s.
a) What is the volume flow rate? cm3/s
b) What is the mass flow rate? g/s
A fisherman notices that his boat is moving up and down periodically due to waves on the water. What is the velocity of the wave
An air-track glider attached to a spring oscillates with a period of 1.50 seconds. At t = 0, the glider is 4.40 cm left of the equilibrium position and moving to the right at 31.9 cm/s. What is the phase constant?
2.00-mol sample of helium gas initially at 300 K, and 0.500 atm is compressed isothermally to 2.00 atm. Noting that the helium behaves as an ideal gas, find (a) the final volume of the gas, (b) the work done on the gas, and (c) the energy transferred..
A rock of mass M with a density twice that of water is sitting on the bottom of an aquarium tank filled with water. Find the upward force acting on the rock by the bottom of the tank
The spacecraft are 4000.0 meters apart. Both spacecraft have masses of 2.0 x 101 kg. What is the force of gravitational attraction between the two craft?
Suppose the charge of one is increased by twenty seven times while the charge of the other is reduced to one-third its initial value. What would their separation distance have to be changed to in order to keep the force between them the same?
An 80 kg spacewalking astronaut pushes off a 640 kg satellite, exerting the 100N force for the 0.50 s it takes him to straighten his arms.
A planet has an atmospheric pressure of 50,000 Pa, and an acceleration due to gravity half that on the earth's surface. Obtain the longest drinking straw that could be used to suck up water
The figure below shows a circuit with a battery and 3 resistors.The resistors have values of 4Ω, 3Ω, and 6Ω asshown. The battery is 18V. Calculate the equivalent resistance of the combination ofresistors and the current in each resistor, the curren..
Assume the particle travels straight through the region completely un-deflected and exits. Determine and identify (below) the polarities of the plates and the resulting Electric Field direction inside the plated region needed so the particle trave..
Consider two infinite, parallel, plane sheets of charge separated by a distance L. Each sheet has the same charge density, ?. Label the three zones of the space as I, II (between) and III. Calculate the total electric field strength in all three regi..
A student ofmass m standsat one end of a long log of length l and mass M, which is floating on the campuspond at right angles tothe shore. Assume there is no friction between the logand the water.
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