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Shiny lawn spheres placed on pedestals are convex mirrors. One such sphere has a diameter of 40 cm. A 12 cm robin sits in a tree 1.5 m from the sphere. Where is the image of the robin and how long is the image? (hint: remember that the focal length is half the radius, and focal length is negative for a convex mirror)
Water is contained in a closed, rigid, 0.25 m3 tank at an initial pressure of 5 bar and a quality of 60%. Heat transfer occurs until the tank contains only saturated vapor. Determine the final mass of vapor in the tank, in kg, and the final pressu..
The dipole moment of a water molecule is6.2×10−30 C·m. What is the electric potentialdue to this dipole at a distance of 1.60e-5 m, ina direction 60° from the direction of the moment vector?
A circular rod of length 25cm and diameter 8mm is made of 1045grade steel. (a) calculate the stress and strain in the rod, andits extension, when it is subjected to 5kN of tension. (b) Atwhat force would the rod begin to yield? (c) by what amount ..
Two points in a rectangular coordinate system have the coordinates (4.6, 3.3) and (?3.4, 5.3), where the units are centimeters. Determine the distance between these points
a steel wire has a diameter of 0.57mm and is 1.5m long. what tension is required to produce an extension of 1.5mm in
Estimate the gravitational force between the Sun and Venus. The mass of the Sun is 1.99×10^30 kg. The mass of Venus is 48.7×10^23 kg. The distance between them is 10.8×10^10 m.
A rubber raft of mass 3M floats past a dock at 1 m/sec toward the east. A girl of mass 2M runs down the dock and jumps in the raft with a speed of 2 m/sec in the north direction. Find the final velocity of the raft and girl
A 92 kg climber rappels down the rope applying friction with figure eight (piece of climbing equipment ) to reduce his his downward acceleration.
when a 0.350 kg mass is hung on the end of a spring, the spring is observed to stretch by an amount of 12.0 cm in coming to a new equilibrium position. what is the force constant of the spring?
A 4200 kg truck is parked on a 24° slope. How big is the friction force on the truck
In astronomy it is common to expose a photographic plate to a particular portion of the night sky for quite some time in order to gather plenty of light. Before leaving a plate exposed to the night sky, Matt decides to test his technique by exposi..
The person in Figure P5.35 weighs 165 lb. As seen from the front, each light crutch makes an angle of 24.0° with the vertical. Determine the magnitude of the compression force in each crutch
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