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Two circular glass microscope slides of diameter 1 cm are separated by a water film of thickness t = 10 mu m. The water completely wets the slides.
1. What is the contact angle of water on the slides?
2. What force is required to separate the glass slides?
A 12cm tall robin sits in a tree 1.500 m above a shiny lawn sphere with a diameter of 48.00 cm. How tall does the image of the robin appear as he sees his reflection? Use a ray diagram and the equations to locate and completely describe the image.
A researcher would like to perform an experiment in a zero magnetic field, which means that the field of the earth must be cancelled. What current is needed in the solenoid's wires
A wheel 2.20 m in diameter lies in a vertical plane and rotates about its central axis with a constant angular acceleration of 4.45 rad/s2. find the angular position of the point P
What is the magnetic field strength
A 25.0 kg child on a 2.00 m long swing is released from rest when the ropes of the swing make an angle of 60.0 degrees with the vertical. determine the childs speed at the lowest position
Manufacturers of headache remedies routinely claim that their own brands are more potent pain relievers than the competing brands. Find the number of molecules of pain reliever
A highway curve with a radius of 650 m is banked properly for a car traveling 120 km/h. how much sideways force must the tires exert against the road if the car does not ski
The third-order fringe of 650 nm light is observed at an angle of 30°, How far apart are the slits
To construct a solenoid, you wrap insulated wire uniformly around a plastic tube 14cm in diameter and 55cm in length, What is the total length of wire you will need to meet these specifications
The resistance of a bagel toaster is 18 . To prepare a bagel, the toaster is operated for one minute from a 120-V outlet. How much energy is delivered to the toaster
A simple pendulum is constructed from a mass of 2 kg and a massless string of length 3.5 m. The pendulum is pulled 5.5 cm to the right and released to start the motion. What is the period of the pendulum
A cubic box of volume3.6multiplied by10-2m3is filled with air at atmospheric pressure at 20°C. What is the net force on each side of the box
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