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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
an engine absorbs 172 kj from a hot reservoir at 277degc and expels 115 kj to a cold reservoir at 27degc in each cyclea
the initial velocity of a car is vi45kmhr in the positive x-direction the final velocity of the car vf is 66kmhr in a
green light 546 nm strikes a single slit at normal incidence what width slit will produce a central maximum that is
monochromatic light of wavelength 430 nm is incident on a soap bubble of index 157 what is the wavelength of the light
an airplane has a mass of 17x106kg and the air flows past the lower surface of the wings at 96 ms if the wings have a
an ideal monatomic gas expands isothermally from 0590 m3 to 125 m3 at a constant temperature of 690 k if the initial
for my project i constructed a trebuche a trebuche is an ancient device used for launching projectiles it acheives this
a heat engine operates in a carnot cycle between 900degc and 360degc it absorbs 20400 j of energy per cycle from the
a tank having a volume of 011 m3 contains helium gas at 170 atm how many balloons can the tank completely fill if each
in a metal each atom and its core electrons are connected by springs to each of their neighbors this would give a
sound is passing perpendicularly through an open window whose dimensions are 11 m x 075 m the sound intensity level is
a raindrop of mass 335 10 -5 kg falls vertically at constant speed under the influence of gravity and air resistance
a a party store has a tank of helium at a pressure of 68 atm in the store where the temperature is 21degc if an
the hang time of a punt is measured to be 450 s if the ball was kicked at an angle of 63 degrees above the horizontal
the total volume of water in the oceans is approximately 140 multiplied by 109 km3 the density of sea water is 1030
in a nuclear power plant the fuel rods last 3 yr before they are replaced if a plant with rated thermal power 100 gw
a stone is projected at a cliff of height h with initial velocity of 42 ms directed 60 degrees above the horizon the
a spacecraft is launched from the surface of the earth with a velocity of 0480c at an angle of 500deg above the
a boy shoots a rock with initial velocity of 40 ms straight up from his slingshot he quickly reloads and shoots another
a typical adult ear has a surface area of 149 times 10-3 m2 the sound intensity during a normal conversation is about
a series rlc circuit contains the following components r 300 102 l 350 102 mh c 500 microf and a generator with
a diverging lens with a focal length of -22 cm and a converging lens with a focal length of 19 cm have a common central
a spaceship of proper length298m takes079micros to pass an earth observer determine the speed of this spaceship as
an automobile accelerates from rest at 20 ms2 for 20 s the speed is held constant for 20 s after which there is