Explain why the melting temperature of a double-helical dna
Explain why the melting temperature of a double-helical DNA increases when the Na+ concentration increases.
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A pitcher throws a curveball that reaches the catcher in 0.55 s. What is the angular displacement of the baseball as it travels from the pitcher to the catcher
In a large centrifuge used for training pilots and astronauts, a small chamber is fixed at the end of a rigid arm that rotates in a horizontal circle. How long is the arm of the centrifuge
A receiver produces a noise power of 200 mW with no signal. The output level increases to 5 W when a signal is applied. Calculate the signal-to-noise ratio as a power ratio and in decibels.
You are planning to purchase a house in five years and intend to save a fixed amount of money each month for a down payment. How will you invest your savings and what are important considerations in selecting an investment vehicle?
A current with sinusoidal time-dependence, whose peak value is 5.55 A and frequency is 775 cycles per second, Calculate the average power dissipated by the loop, if its resistance is 64.3
A portable electric garden tool uses a 11 volt rechargeable battery pack with a rated capacity of 2.1 amp-hours. If the tool is used with a continuous power output of 0.2 horsepower, what is the expected battery life
A 7.57- g bullet is moving at 689.00 m/s as it leaves the 0.63- m-long barrel of a rifle. What is the average force on the bullet
Draw a block diagram for a datapath that contains: an 8-word, three-port register file; an ALU that accepts operands either from the datapath or from an external source; and a shifter that shifts the A operand from the register file before it goes
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