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As an NMR spectroscopist, do you prefer larger or smaller values for the duration of the 90° pulse for the target nucleus/channel (e.g. for 1H)? Justify.
Once the block begins to slide, a 4 N frictional force opposes its motion. Through about how many meters will the block slide before coming to rest
In 1898, Pierre & Marie Curie isolated about 10mg of radium-226 from eight tons of uranium ore. How many radium nuclei would have decayed during this time
A particle with a charge of 4.10 x 10-3 C is moving in the presence of an electric field of 798 N/C. Find what force does the particle experience
The driver of a sports car, of mass 1000 kg, has now noticed that the trace lights ahead of her are red. She slams on the brakes. Unluckily, her car skids 50 m and collides with a stationary car, of mass 1200 kg. Both cars move together another 120 m..
Two point charges are placed on the x axis as follows: chargeq1= -1.50 nC is located at x=.200m, and a charge q2= +5.00 nC is atx=-.300m. What are the magnitude and direction of the net forceexerted bu these two charges on a negative point charge q3=..
Explain through physical concepts why the following are words of wisdom - You and a friend are watching a pool-shark showing off his prowess at billiards. In one demonstration, the pool-shark placed two billiard balls, one red and the other white, ..
A circular loop of flexible iron wire has an initial circumference of 167 cm, Find the magnitude of the emf induced in the loop after exactly time 7.00 seconds has passed since the circumference of the loop started to decrease
Briefly explain in your own words why the pendulum oscillates. Where is the kinetic energy highest? Please explain why that is so. Write the equation for the pendulum's period T. What characteristic(s) of the equipment affect the period
An air-track glider is attached to a spring. The glider is pulled to the right and released from rest at. It then oscillates with a period of 1.5 and the maximum speed of 32.
Draw a picture of a moving source and the waves surrounding it according to what you observed in this experiment. How does the spacing of the wavefronts in front of the source compare to those behind it?
A man eats a dessert that contains 170 Calories. (1 Calorie = 4186 J), Find how many hours would it take her to emit anet radiant energy from her body that is equal to the energy contained in this dessert
Calculate the expectation value of the potential energy of the H atom with its electrons in the 1s orbital. Compare this with the total energy.
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