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If we have two different elements, and each has an electron drop from the first excited state to the ground state, they will both have emission lines. But these lines may be very different between the two elements. Explain how this is possible.
A particle with a charge of 14 µC experiences a force of 2.5 x 10-4 N when it moves at right angles to a magnetic field with a speed of 28.4 m/s. What force does this particle experience
A dock worker applies a stable horizontal force of 79.0 {rm N} to a block of ice on a smooth horizontal floor. The frictional force is negligible. The block starts from rest and moves 14.0 {rm m} in the first 6.00 {rm s}.What is the mass of the bl..
carbon dioxide co2 gas intially at 70 degrees f 15 lbfin2 and 1 ft3 is compressed in a piston cyclinder assembly.
A camera is equipped with a lens with a focal length of 23 cm. how far from the film should the lens be placed
A certain refrigerator is rated as being 31% as efficient as a Carnot refrigerator. how much work must the refrigerator motor do
Three equal positive point charges of magnitude Q = 5.00? C are located at three corners of a square of edge length d = 7.5 cm. What is the magnitude of the attractive force on the negative charge
Label each curve. Also sketch on the same (or similar) axes the I-V curves for the diodes at - 100 C. Repeat for 100 C. As the temperature is lowered much further below - 100C, what phenomena would limit the operation of the diodes?
An elevator cable breaks when a 774 kg elevator is 22.9 m above a huge spring (k = 8.00104 N/m) at the bottom of the shaft. Calculate the speed of the elevator just before striking thespring
A 2-kg mass is attached to a spring hanging vertically from the ceiling of an elevator. With the elevator moving up at a constant velocity of 3 m/s, the extension of the spring is 4 cm. What is the spring constant, k, of the spring?
A bullet is fired at a block of wood whose mass is 2000 gram and suspended as a ballistic pendulum. The speed of the bullet just before impact is 28,140 cm/sec. Find what is the mass of the bullet
a logic circuit has two 2-bit unsigned binary numbers x10 and y10 as the inputs and it has two 1-bit outputs. one of
A liquid in a cylinder has a volume of 1200 cm3 at 1.25 MPa and a volume of 1188 cm3 at 2.50 MPa. Determine its bulk modulus of elasticity.
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