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Why is the zeroth order maximum the same color as the source? For lines of a given order, are the red or violet lines on the screen closer to the zeroth order maximum?
A focal length f1 = 20 cm, lens 2 has f1 = -12 cm, and the lens separation is d = 7 cm. (a) What is the image distance i2 (including sign) for the image produced by lens 2?
A slide 23.9 mm high is to be projected so that its image fills a screen 1.84 m high. The slide-to-screen distance is 2.96 m. Determine the focal length of the projection lens.
A Ferris wheel with a radius of 14.0 m rotates at a constant rate, completing one revolution in 30.0s. What is the apparent weight of a 60.0-kg passenger when she is at the bottom of the wheel?
The refractive index of the pane is n2 = 1.52. Find the amount (in mm) by which the emergent ray is displaced relative to the incident ray.
The focal length of the objective is 0.430 cm, and that of the eyepiece is 1.50 cm. Find the overall magnification of the microscope.
Calculate the de Broglie wavelength for each of the following. a) a proton with a velocity 95% of the speed of light. b) a 160 g ball with a velocity of 10. m/s.
A block A of mass 2kg rests on another block B of mass 8 kg which rests on a horizontal floor. The coefficient of friction between A and B is 0.2 while that between floor and block B is 0.5 When a h
What is the probability of a random dart landing inside the bullseye?
A body of mass 60 kg is dragged with just enough force to start moving on a rough surface with coefficients of static and kinetic friction 0.5 and 0.4 respectively. On applying the same force what i
How many minutes does it take for a radio message to reach earth from Saturn if Saturn is 7.9X10^8 km from earth?
A rectangular piece of paper is folded so that one corner lands on the opposite corner. The crease is as long as the longer side of the rectangle. What is the ratio of the sides of the rectangle?
Prove that the formula for the sum of the measures of the interior angles of a n-gon is 180(n-2) or 180-360 (Polygon AngleSum?) using a heptagon that can be cut into 7 congruent isosceles triangle.
A car is going at a speed of 21.6 km/hr when it encounters a 12.8m long slope of angle 30 degree. The friction coefficient between the road and the tyre is 1/2*0.732. Show that no matter how hard th
Discuss the mechanism of oscillating reactions using the Briggs-Rauscher or the Belousov-Zhabotinsky reactions as examples.
What would the predicted temperature increase of a bomb calorimeter (heat capacity of 1450 J/C) that is submersed in 2.00 L of water (assume d(water) = 1.00 g/mL) be if 0.055 mol of a hydrocarbon (e
For each of the following molecules, determine what atomic orbitals on the central atom are allowed by symmetry to be used in the construction of sigma hybrid orbitals.
An arctic weather balloon is filled with 10.2L of helium gas inside a prep shed. The temperature inside the shed is 9(deg)C. The balloon is then taken outside, where the temperature is -21(deg)C. Ca
Strontium (Sr), with a mass number of 90 and an atomic number of 38, decays by beta emission. Identify the product of the nuclear reaction by providing its atomic symbol mass number and atomic numbe
Calculate the velocity (in ms-1) of photoelectrons ejected from a sodium metal surface, which has a work function of 2.30eV, by ultraviolet light of wavelength 254nm. The electrons mass is 9.109 x 1
Sr-90 may be produced from an atomic bomb explosion. The half-life of Sr-90 is 28.8 years. What fraction of the Sr-90 originally produced by the first atomic bomb in July 1945 still remains as of Ju
The gas inside a flexible container (e.g., a balloon) is allowed to expand against a constant external pressure of 0.8 bar until the volume increases from 2.1 L to 7.6 L. Calculate the amount of work
Aqueous solutions of sodium hydroxide and iron(III) sulfate are mixed. write the balanced molecular equation for this reaction, including physical stated and names of products?
When a piece of solid Cu metal is put into an aqueous solution of HCL a gas of HCL a gas evolves and the solution turns blue(indicating formaiton of Cu^2+). what is the net ionic equation for this r
If 484.7 mL of nitrogen gas, measured at 777.5 mmHg and 88.2oC, reacts with excess iodine according to the following reaction, what mass of nitrogen triiodide is produced?