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A few more questions (3) My teacher wasn't good at explaining these
a. What are two equations for the energy of light? Identify each variable.
b. White light is made up of all colors. If white light shines on an orange, which colors will be reflected and which will be absorbed?
Silver pellets with a mass of 0.90g and a temperature of 84C are added to 210g of water at 14C. How many pellets must be added to increase the equilibrium temperature of the system to 26C? Assume no heat is exchanged with the surroundings.
an object of mass 39 kg is observed to accelerate with an acceleration of 2.0 m/s^2. If friction is so mall that it can be ignored, what is the force applied to the object in newtons
An ice cube of uniform density, 10.0 cm on a side, is floating inpure water. How much work did she do
A 400lb woman stands on a floor in flat soled shoes. A 130lb woman stands on the same floor in a high heel shoe with all her weight is on the heel of the shoe. Which person is more likely to dent the floor?
An X-ray photon with a wavelength of 0.120 nm scatters off a free electron at rest. What is the kinetic energy of the scattered electron
What is the result of mixing 80g of ice at -20 degrees Celsius, into a 200g of water at 20 degrees Celsius? What fraction of the ice cube melts
A toriod with a square cross-sectional area A = a x a m2 , has an inner radius R and and outter radius R+a. What are the bound currents in the Toroid
a skier slides horizontally along the snow for a distance of 23 m before coming to rest. the coefficient of kinetic
The image behind a convex mirror (radius of curvature= 69 cm) is located 17 cm from the mirror. Where is the object located? What is the magnification of the mirror?
three vectors length a67.0 b39.3 and c44.0. the angles are a27.7 and b54.2 and c points along the negative y-axis.
q1. a horse races once around a circular track in a time of 118s with a speed of 17 ms. what is the radius of the
A 2.00-g charged particle is released from rest in a region that has a uniform electric field vector E = (590 N/C) i hat. After traveling a distance of 0.470 m in this region, the particle has a kinetic energy 0.150 J.
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