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Water is transported upward in a plant through xylem tissue, which consists of cells of 1 mm length and a diameter of 65 µm. The xylem cells are attached to each other to form a channel. To what maximum height can water rise in these xylem channels due to capillarity? For those interested: Confirm this result with a simple experiment: Cut and split the stem of a flower with white petals (e.g., a dahlia or a carnation) and place one half the stem in a glass with dilute red ink and the other half in a glass with dilute blue ink. After several hours the flower will be half red and half blue.
A student is reading a lecture written on a blackboard. The lenses in her eyes have a refractive power of 62.80 diopters, Compute how far is the blackboard from her eyes
If there had been no explosion, the shell would have landed a distance from the mortar. Suppose that air resistance and the mass of the shell's explosive charge are negligible. Determine the distance from the mortar at which the larger piece of th..
A 0.49 kg block attached to a spring with force constant 150 N/m is free to move on a frictionless, At that instant, find the force on the block
a hot air balloon decends toward the ground with a velocity of 1.6 ms. a champagne bottle is opened to celebrate
how long does it take electrons to get from the car battery to the starting motor? assume the current is 140 a and the
A playground merry-go-round has a radius of 4.60 {rm m} and a moment of inertia of 250 kg m^2 and turns with negligible friction about the vertical axle through its center.
A string passes over a frictionless pulley and connects a 250 g block to 2.00 kg block. The inclines are frictionless. Assuming you release both masses from rest, how much time would it take the 250g to travel 2200cm next to the ramp.
A ray of light is incident on the surface of a block of clear ice at an angle of 35.0 degrees with the normal. Find the angle between the reflected and refracted angle
Partly-full paint can have 0.60 U.S. gallons of paint left in it. What is the volume of the paint
A car (m = 2,000 kg) has an initial speed of 40 m/s and the driver applies the brakes over a distance of 200 meters until the car comes to a stop
Brass is an alloy of copper and zinc. Does the addition of zinc to copper reason an increase or decrease in the speed of sound in brass rods compared to copper rods? Describe.
You combine two thin lenses by placing them in contact so that their axes coincide, Find the focal length of this compound lens
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