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At high altitudes, water boils at a temperature lower than 100.0° C due to the lower air pressure. A rule of thumb states that the time to hard-boil an egg doubles for every 13.0° C drop in temperature. What activation energy does this rule imply for the chemical reactions that occur when the egg is cooked?
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A plane wave of monochromatic light is incident normally on a uniformly thin film of oil that covers a glass plate. find the thickness of the oil film
A transformer has a primary coil with 1200 turns and a secondary coil with 225.0 turns. what is the voltage output from the secondary coil
A string on a guitar is stretched between two points 35.0 cm apart with a tension of 65.0 N. The velocity of wave propagation on the string is
A proton is moving with an initial velocity of 6.28 x 10^5 m/s straight towards a large conducting sphere of radius 85.2 cm. What is the voltage on the surface of the sphere
The real image of an object is located 45.0cm away from a concave mirror, which has a focal length of 10.0cm. How far is the object from the mirror
A 2.00 kg. frictionless block is attached to an ideal spring with force constant 300 n/m. At t=0 the block has velocity -4.0 m/s, what is the position of the block when its speed is 2.5 m/s
Bored, a boy shoots his pellet gun at a piece of cheese that sits, keeping cool for dinner guests, on a massive block of ice. obtain the coefficient of friction between the cheese and ice
A cube with a side of 25.00 cm is immersed in a fluid. Knowing that the pressure at the top surface of the box is 109.4 kPa, find the density of the fluid
A solid, uniform disk of radius 0.250 m and mass 45.1 kg rolls down a ramp of length 5.20 m that makes an angle of 13.1° with the horizontal. Find the speed of the disk's center of mass when it reaches the bottom of the ramp
Suppose the rotational kinetic energy of a solid disc is 1000 J when the disk has an angular velocity of 3 rad/s. What is the disk's moment of inertia
A 2 200-kg pile driver is used to drive a steel I-beam into the ground. The pile driver falls 4.20 m before coming into contact with the top of the beam, Find the magnitude upwards
q1. a golf ball with an initial angle of 50deg lands exactly 229 m down the range on a level course.a neglecting air
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