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a concave mirror forms a real image which is twice the size of the object if the object is 20 cm from the mirror
a certain lcd projector contains a single thin lens an object 295 mm high is to be projected so that its upright image
you stand in the earths magnetic field directly facing its horizontal component in other words facing magnetic south
an 150-kg box is released on a 350 incline and accelerates down the incline at 0290ms2a find the friction force
at the low point in it swing a pendulum bob with a mass of 046 kg has a velocity of 22 msa what is its kinetic energy
a projectile is fired with an initial speed of 607 ms at an angle of 354 above the horizontal on a long flat firing
a uniform solid right circular cylinder rolls down an 400 m incline without slipping how fast will the cylinder be
a diver running 27 ms dives out horizontally from the edge of a vertical cliff and 20s later reaches the water belowa
a skater of mass 815 kg initially moves in a straight line at a speed of 470 ms the skater approaches a child of mass
a constant uniform electric field points in the positive x-direction with the magnitude of 500 nc a charged particle
a man of mass 770 kg walks down the aisle of an airplane at a speed of 170 ms in the forward direction while the plane
an object is placed 100 cm in front of a diverging lens of focal length -25 cm a converging lens of focal length
a person with a mass of 52 kg runs with a speed of 68 ms jumps onto the outer rim of a merry-go-round the
a point source of electromagnetic waves emits waves uniformly in all directions at a distance of 100 m from the source
a photocathode whose work function is 25 ev is illuminated by white light of wavelength range from 380 nm to 720 nm
x rays diffract from a crystal in which the spacing between atomic planes is 0168 nm the second-order diffraction
a deuteron particle the nucleus of an isotope of hydrogen consisting of one proton and one neutron and having a mass of
a certain lightbulb has a tungsten filament having a resistance of 16 at 22degc and 155 when hot assume r r01 t -
an ideal transformer has 255 loops in its primary coil and 125 loops in its secondary coil if the primary voltage is
a series circuit contains a 240- resistor a 38-f capacitor and a 550-mh inductor it is placed across the terminals of
a rock is thrown vertically upward from ground level 12 s later it reaches its maximum height and 18 s later it passes
a 039 m long and 039 m wide loop is moved at a constant velocity of 037 ms into a perpendicular constant magnetic field
a series rlc ac circuit has a capacitive reactance of 55 and inductive reactance of 25 and a resistance of 40 what
from the top of a 75m building a 100 kg ball is thrown downwards with initial velocity of 800 ms the ball reaches the
a 15kg child stroller is moving towards you with a speed of 25ms how much work is required to stop the