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A drop of unknown liquid is placed at the point on a glass surface where internal reflection is occurring at. The drop is heated until internal reflection happens. What is the refractive index of the liquid?
What is the percentage difference between the speeds of red light and violet light in diamond, What is this percentage difference in flint glass
A small puck of mass m=0.1kg moves in a circle of radius 0.3m on a table top; the puck is tied with a massless string to a tether at the origin. find the tension in the string at the end of one revolution
A lever uses an effort arm of 4.75 m and has a resistance arm of 21.5 cm. What is the mechanical advantage of the lever
An m=8.25 Kg mass is suspended on a string that is pulled upward by the force of F=83.3 N. If the upward velocity of the mass is 3.25 m/s right now, what is the velocity 5.50 s later.
An 93-g arrow is fired from a bow whose string exerts an average force of 120N on the arrow over a distance of 77cm, What is the speed of the arrow as it leaves the bow
Describe the role of electrical forces in nuclear fission. When a nucleus undergoes fission, what role can the ejected neutrons play
A man exerts a 328 N force to move a box across a 3.55-m patch of ice. How much work does he do on the box.
What is the magnitude of the acceleration of the speck of clay on the edge of a potter's wheel turning at 50 (revolutions per minute) if the wheel's diameter is 38.0 cm.
Certain stars are thought to collapse at the end of their lives, combining their protons and electrons to form a neutron star. what would be the radius of the star
The coefficient of volume expansion of coffee is the same as that of water. How much coffee (in cubic meters) has spilled out of the beaker.
At launch the space shuttle has an overall upward acceleration of about 5m/s^2, how far inot the air will it travel, assumin that it travels straight up, what is the velocity of the shuttle after 5 seconds
A 70 g bullet traveling at 250 m/s penetrates a block of ice at 0°C and comes to rest within the ice. Assuming that the temperature of the bullet does not change appreciably, how much ice is melted as a result of the collision?
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