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The leaves of a tree lose water to the atmosphere via the process of transpiration. A particular tree loses water at the rate of 3*10^-8 m^3/s; this water is replenished by the upward flow of sap through vessels in the trunk. This tree's trunk contains about 2000 vessels, each 100?m in diameter. What is the speed of the sap flowing in the vessels?
A simple harmonic oscillator is undergoing oscillations with an amplitude A. How far is it from its equilibrium position when the kinetic and potential energies are equal?
One end of a cord is fixed and a small 0.550-kg object is attached to the other end, find the tangential and radial components of acceleration
two objects are connected by a light string that passes over a frictionless pully, find the magnitude of the acceleration of the suspended block as it falls
Relationships between wavelength, frequency and speed.
A cube of ice is taken from the freezer at -8.4^circ C and positioned in a 114 g aluminium calorimeter filled with 322g of water at room temperature of 20.0 C. The final situation is observed to be all water at 15.0C.
Suppose that the net horizontal force is as a result of rolling friction only and take the free-fall acceleration to be g = 9.80 m/s^2.
At one instant, a 19.0-kg sled is moving over a horizontal surface of snow at 5.00 m/s. find the magnitude of the average friction force acting on the sled while it was moving
150g of steam at 100C (373K) is injected into a container containing 250g of ice and 150g water both at 0C (273K). What is the change in entropy of the environment
A stuntman drives a car over the top of a hill, the cross section of which can be approximated by a circle of radius 160 m. What is the greatest speed at which he can drive without the car leaving the road at the top of the hill?
A tennis player tosses a tennis ball straight up and then catches it after 1.65 s at the same height as the point of release. What is the acceleration of the ball while it is in flight
A spring with a spring constant of 1.5 * 10^2 N/m is attached to a 1.4 kg mass and then set in motion. What is the period of the mass-spring system
what is the electric potential energy of this particle. what is its speed just before it strikes the positive plate.
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