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It is know that a certain hydrogen atom has a definite valueof l. What does this statement tell you about the angular momentum.
What are the allowed energies of consistent with this information?
A woman walks for 4 min directly north with a average velocity of 6 km/h; then she walks eastward at 4 km/h for 10 min. What is the magnitude of her average velocity
Illustrate the cause of the components accelerating from rest down the conveyor.
When a resistor is connected across the terminals of an ac generator (103 V) that has a fixed frequency, there is a current of 0.505 A in the resistor. find the impedance of the series combination
An alpha particle (the nucleus of a helium atom, with charge +2e and a mass four times that of a proton) and an antiproton (which has the same mass as a proton but charge -e) are released from rest a great distance apart.
A street light is supported by two wires and each makes a different angle from each other. Find the tension in each wire if the street light has a mass of 60.0 kg
Suppose 79kW is to be transmitted over two 0.105ohms lines. Estimate how much power is saved if the voltage is stepped up from 200V to 2000V and then down again, Estimate how much power is saved
Using the definition of entropy change, dQ = T dS, what is the entropy change of the hot reservoir
a block of mass 2 kg is initially moving with speed 4msec at point a on a smooth inclined plane with andle 60 degrees
A coffee filter of mass 1.1 grams dropped from a height of 1 m reaches the ground with a speed of 0.5 m/s. How much kinetic energy Kair did the air molecules gain from the falling coffee filter? Start from the Energy Principle and select as system..
an ac generator supplies 20 a at 440 v to a 10000 v power line. if the step up transformer has 150 turns in its
you suspect that an unknown is acetanilide mp 113.5-114oc. give a qualitative estimation of the melting point when the
To some extent, the brilliance of diamonds is attributal to total internal reflection. Calculate the critical angle for a diamond-air interface
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