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How difficult is it to get DNA into a narrow tube?
To an information theorist, the entropy associated with a constrained channel reveals how much information can be conveyed over it. In statistical physics, the same calculations are done for a different reason: to predict the thermodynamics of polymers, for example.
The drawing shows two boxes resting on frictionless ramps. One boxis relatively light and sits on a steep ramp. The other box isheavier and rests on a ramp that is less steep. The boxes arereleased from rest at A and allowed to slide down the ramp..
Two point charges of equal magnitude are 7.3cm apart. At the midpoint of the line connecting them, their combined electric field has a magnitude of 40N/C . Find the magnitude of the charges.
A small airplane needs to reach a speed of 280 km/h to take off. (a). What is the minimum length of a runway in m that can allow the plane to takeoff if it accelerates at the rate of 3.80 m/s2? (b) How much time does the plane take to reach that s..
The middle C string on a piano is under a tension of 882 N. The period and wavelength of a wave on this string are 3.82 10-3 s, Find the linear density of the string
What fraction of the sky is covered by stars in case - You can make the simplifying assumption that stars don't overlap.
What are the magnitude and direction of the force exerted on a 4.04 µC charge with a 277 N/C electric field that points due east?
A rope of length 7.00 m has a mass of 700 g. It is tied between two poles; the tension force in the rope is 40 N. What is the speed of waves on the rope?
A 100 g aluminum calorimeter contains 250 g of water. The two substances are in thermal equilibrium at 10°C. Determine the specific heat of the unknown second sample
A cord is wrapped around the rim of a solid uniform wheel 0.280 m in radius and of mass 9.60 kg. Find the magnitude of the force that the axle exerts on the wheel
Let's say that you have a mass of 45.0 kg, and that you run up a staircase as fast as you can, taking a time of 2.40 s to you raise yourself through a height of 3.00 meters. What is your power output during this process
a block of mass m 3.0 kg is attached to a spring of constant k 240 nm. it can slide along a board tilted at an angle
a 50 kg toy airplane is suspended from the ceiling by a 1.6m cord and rotates in a horizontal circle. If the cord makes an angle of 35 degrees with the vertical, A) Find the speed of the plane B) Find the tension in the cord
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