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two slits separated by a distance of d 015mm are located at a distance of d 590mm from a screen the screen is
a vertical spring stretches 42 cm when a 14-g object is hung from it the object is replaced with a block of mass 22 g
a step-down transformer turns ratio 16 is used with an electric train to reduce the voltage from the wall receptacle
nitrogen forms hydrides one of them a is acidic and contains 23 of hydrogen another b is a base containing 875 of
a bat see the image below can detect very small objects such as an insect whose length is approximately equal to one
tension is maintained in a string the observed wave speed is 265 ms when the suspended mass is m 287 kg what is the
youre burning calories by weight lifting you lift a 65kg barbell 17m and repeat 10 timesa how much energy in do you
a uniform chain of length l and mass m is lying on a smooth table and one-third of its length is hanging vertically
a 20-m long steel wire cross-section 10 cm2 youngs modulus 20 acute 1011 nm2 is subjected to a load of 25 000 n how
estimate the change in the earthrsquos gravitational dipole moment with respect to the earthrsquos center if the polar
the surface of the sun is approximately at 5700 k and the temperature of the earthrsquos surface is approximately 280 k
the first-order principal maximum produced by a grating is located at an angle of 116 degrees what is the angle for
suppose 186 kg of water at 144c is mixed with 228 kg of water at 79c after equilibrium is reached the mixture has an
waves on a 10 meter rope travel at 20 ms you shake the rope back and forth until you get a standing wave with a single
a nonreflective coating n 131 covers the glass n 152 of a camera lens assuming that the coating prevents reflection
in a series l-r-c circuit the components have the following values l 180 mh c 170 nf and r 380 ohms the generator
a series circuit consists of an ac source of variable frequency a 150 ohm resistor a 155 uf capacitor and a 456 mh
during the design of a ski ramp for safety it was decided that a skier should have a speed of no more than 30 ms when
unpolarized light with an intensity of585w m2 is incident on a polarizer with an unknown axis the light then passes
a 200 m long rope is stretched between two supports with a tension that makes the speed of transverse waves 480 ms what
unpolarized light of intensityi0is incident on three polarizing filters the axis of the first is vertical that of the
a electron enters a magnetic field of 03 t at an angle of 35 degree and with a speed of 500 e5 ms find the force on the
an aluminum cup contains 225 g of water and a 40 g copper stirrer all at 27degc a 490 g sample of silver at an initial
a series rcl circuit includes a resistance of 298 ohm an inductive reactance of 648 ohm and a capacitive reactance of
a 9 volt battery is connected in parallel with a 100 ohm 200 ohm and 500 ohm resistors find the total resistance in