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1. The diagram below shows the acceleration of blood in the vasculature versus time in seconds. Give the time at which the blood is moving with the maximum velocity. Explain your answer.
2. All modern elevators feature safety mechanisms. For example, if an elevator cable breaks, the falling elevator car will land on a set of giant springs on the bottom of the shaft, compressing them. However, the conservation of energy asserts that the energy required to break the car's fall is the same whether the springs are present or not. How, then, do the springs save lives? (Be specific-what quantities are changed when the springs are present? Which of these explains the difference?)
This problem introduces the concept of tension. The instance is a rope, oriented vertically, that is being pulled from both ends. Let and (with u for up and d for down) represent the magnitude of the forces acting on the top and bottom of the rope..
A cylinder of mass 8.0 kg rolls without slipping on a horizontal surface. At a certain instant its center of mass has a speed of 11.0 m/s. Determine the translational kinetic energy of its center of mass
A hospital orderly pushes horizontally on two boxes of equipment ona rough horizontal floor, as show in figure 4.38. Make a free-bodydiagram of each box if the force applied to the 50lb boxis 115N and each box experiences frictional forces of 8.2N.
a portable classroom is heated with small propane heating units with a capacity of 3 kw each. the portable classroom is
an arrow is shot at an angle of theta45 degrees above the horizontal. the arrow hits a tree a horizontal distance d220m
The dielectric of a parallel plate capacitor is to be a slab of glass that completely fills the volume between the plates. Find the charge on the capacitor if it is connected to a 24 Volt battery
A parallel-plate air capacitor with a capacitance of 236 has a charge of magnitude 0.13 on each plate. The plates have a separation of 0.33.What is the potential difference between the plates.
You and the friend each drive 47.0 km. You travel at 87.0 km/h; your friend travels at 98 km/h. How long will your friend wait for you at the end of trip.
Determine the magnification of a magnifying glass of focal length 4 centimeter if the image is to be viewed by a relaxed eye with a near point of 25 centimeter
A steel column in a building has a cross-sectional area of 3500 cm2 and supports a weight of 2.5 x 105 Newton. Determine the stress on the column
Two friends enter the Boston marathon. The first friend runs at a constant speed of 0.500 m/s. The second friend holds a speed of 1.00 m/s. how many hours would he be waiting once he stops
a gas cylinder holds 0.100g of at 180 degrees cand a pressure of 3.50atm. the gas expands adiabatically until the
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