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a 2250 kg car traveling at 10 ms collides with a 2750 kg car that is initially at rest at a stop light the cars stick
two thin lenses of focal lengths f1 150 and f2 100 cm respectively are separated by 350 cm along a common axis the f1
the equation of motion for an oscillator in vertical shm is given by y055msin160radstpart a what is the amplitude of
two carts on a track have the same massm220nbspkg they collidecompletely inelasticallywith cart 1 initially traveling
a sealed container containing 40 mol of gas is squeezed changing its volume from 0020 m3 to 0018m3 during this process
air that occupies 014 at 103 x 105 pa gauge pressure is expanded isothermally to atmospheric pressure and then cooled
elinor 25 kg is playing on the 100kg 25 meters wide merry-go-round but wants to go faster elinor stands in the middle
water at temperature 25degc flows from a tap t into a heated container c the container has a heating element a resistor
a 725-loop square armature coil with a side of 130 cm rotates at 650 revs in a uniform magnetic field of strength 08 t
a square rod and a cylindrical rod are made of the same copper alloy and cut to the same length as shown in the figure
a capacitor that is initially uncharged is connected in series with a resistor and an emf source with e 100 vand
a transformer with an efficiency of 80 is connected to 50-volt alternating current source the voltage and current in
the primary of a transformer is connected to a source of voltage that has two components an alternating current ac
a lightweight ball hangs by a thread when a charged rod is held near the ball moves toward the rod touches the rod then
a siren mounted on a tower emits a sound whose frequency is 2110 hz a person is driving a car away from the tower at a
when traveling past an observer with a relative speed v a rocket is measured to be 9m long when the rocket moves with a
let vp ip and np be the voltage the current and the number of turns of the primary of an electric transformer and vs is
a tank of volume 0456 m3contains 28 mol helium gas at 8c assume that the helium behaves like as an ideal gasthe
a planet of mass m 495 times 1024 kg is orbiting in a circular path a star of mass m 555 times 1029 kg the radius of
light with a wavelength of 435 nmilluminates a metal cathode the maximum kinetic energy of the emitted electrons is 0
water circulates throughout a building if the flow speed and pressure in a 22cm-radius pipe on the top floor are 15ms
a density bottle weighs 235 g when empty and 631g when partly filled with soil when water is added to the soil to
when light with a wavelength of 235 nm is incident on a certain metal surface electrons are ejected with a maximum
a simple pendulum uses a steel wire as the string the length of this wire is 15 m at room temperature if the
a series rlc circuit has a peak current of 2 a with a frequency of 22 khz if the resistance of the circuit is 60 komega