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if the pv cells have an efficiency of 10 what area of land is needed to produce and electrical output of 1000 mw
two 012nbspgnbsppith balls are suspended from the same point by threads 32nbspcmnbsplong pith is a light insulating
consider a situation where immediately after birth twins are separated one continues to live on earth while the other
a weather team releases a weather balloon the balloons buoyancy accelerates it straight up at 15 ms2 a wind accelerates
a 210-fnbspcapacitor is connected to a 120-v battery for a long time and then is disconnected the capacitor briefly
in the us typical household electrical outlets supply electricity at a nominal voltage of 120 v and a maximum current
two tiny masses are stuck to a disk originally rotating counter-clockwise at 33 rads about its centernbspmass 1 is
a disk is initially at rest and a constant angular acceleration of 4 rads2 is applied to it counter-clockwise about its
two rubber balls with two different masses are dropped from height of 9 meters from rest neglect air resistance and
a mass of 10 kg is moving at 66 ms in the positive x direction and collides in a perfectly elastic collision with a
a mass is moving at in the x direction and collides inelastically with a another mass of 4 kg moving at 71 ms in the -x
calculate the rms speed of an electron near the suns surface if the temperature and pressure are 201 x106 and 00295 pa
a spring with a spring constant k 150 nm is hung vertically from the ceiling a 750 kg mass is attached to the end of
1 how much heat transfer is necessary to raise the temperature of a 0200-kg piece of ice from -200ordmc to 130ordmc
a 00500-kg ice cube at -300ordmc is placed in 0400 kg of 350ordmc water in a very well-insulated container what is the
a vacuum evaporator has an absolute pressure of 25 kpa the level in the evaporator is 10 m above the centreline of the
why are rainbows so frequently seen during summer but so seldom are they seen during
how do rainbows form why is the secondary rainbow dimmer than the primary
at what wavelength is the thermal radiation emitted by a person the most intense use wiens law in which region of the
normal human body temperature is about 37 degrees celsius what is the body temperature in kelvins show the
jupiter completes one revolution around the sun in 12 years use keplers third law to estimate the distance between the
using knowledge of magnetics how does a clamp ammeter can
im having trouble with a physics question phase angle is the difference between the current it and the voltage vt of
a block whose mass is m 33 kg is pushed across a frictionless surface by a stick whose mass is 32 kg the block is