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if the pressure inside an air tank is 10 atm when the balloon is at a temperature of 25 c what will the pressure inside
a weather balloon has a volume 12 m3 at sea level where the pressure is 101 kpa and the temperature is 20 c when the
dark matter is one of the great mysteries of astronomy and physics dark matter is matter that does not radiate
given the suns distance from the center of the milky way and the suns period of revolution how can we determine a lower
which of the following statements are true about nuclear decays and radioactivity1 gamma decay involves emission of a
which of the following statements are true about nuclei and the nuclear forcemass number indicates the number of
two blocks are connected by a lightweight flexible cord that passes over a single frictionless pulley if m1 gtgt m2
a coil has 400 turns and self-inductance 480mh the current in the coil varies with time according to
the creation and study of new and very massive elementary particles is an important part of contemporary physics to
consider electrons accelerated to a total energy of 200 gev in the 300-km-long stanford liinear accelerator a what is
a vertical scale on a spring balance reads from 0 to 185 n the scale has a length of 150cm from the 0 to 185n reading
a 550 kg man is ice-skating due north with a velocity of 590 ms when he collides with a 360 kg child the man and child
the pendulum in the figure consists of a uniform disk with radius r 150 cm and mass 420 g attached to a uniform rod
an athlete has a large lung capacity 70 l assuming air to be an ideal gas how many molecules of air are in the athletes
a uniform 76 kg ladder is leaning against a frictionless vertical wall with which it makes a 15 deg angle the
the full diameter of a wheel is 99 cm and its rotational inertia is 61kg m2 what is the minimum mass it could have how
a 0250-kg piece of aluminum that has a temperature of -158 degc is added to 14 kg of water that has a temperature of 26
a string wrapped around a peg diameter200 cm along the axis of a top is pulled with a constant tension of 592 n
a 10-m long plank with a mass of 15-kg is supported at each a 70 kg person stands on the plank between the supports if
the lenses in the glasses have a focal length of -443 cm and are worn 20 cm from the eyes with the glasses the person
suppose 79kw is to be transmitted over two 0105ohms lines estimate how much power is saved if the voltage is stepped up
four identical 2kg point masses are fixed at the corners of a massless rectangle of length 20cm and width 15cm the
a physics student wants to build a spring gun that when aimed horizontally will give a 300- g ball an initial
a 50 w light bulb shines through two polarizers after having passed through the first polarizer the electric field