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the filament in a light bulb has a resistance of 10 if the filament has a cross sectional area of 30times10-6 m2 and
a capacitor has a capacitance of 55pf in the charging process electrons are removed from one plate and placed on the
a charge of 4microc is placed at one corner of an equilateral triangle and a charge of -2microc at another corner the
1a rock weighing 10kg is carried horizontally across a 10m room calculateihow much work is doneiihow much potential
a what properties of light might be involved in reflectionb what changes occur in the properties of light such as
an underground pipe carries water of density 1000 kgm3 to a fountain at ground level at point a 050 m below ground
a horse canters away from its trainer in a straight line moving135 m away in 156 s it then turns abruptly and gallops
the near point of a given individuals eyes is 55cm what focal length corrective lens should be prescribed so that an
a small turbo-prop commuter airplane starting fromrest on a tallahassee airport runway accelerates for 225s before
a figure skater is spinning at a rate of 10 revs with her armsoutstretched she then draws her arms in to her
a diver can change his rotational inertia by drawing his arms andlegs close to his body in the tuck position after he
a given individual is unable to see objects clearly when they are beyond 100cm what focal length lens should be used to
a binary star in the constellation orion has an angular separation between the stars of 10-5radians if lambda500nm what
what is the magnitude of the electric field at the centre of a square of side 4500 cm if one corner is occupied by a
a nearsighted person cannot see objects clearly beyond 30cm the far point if the patient has no astigmatism and contact
two cars are traveling on a desert road as shown below after 50 s they are side by side at the next telephone pole the
a rocket ship is 80m in length when measured before leaving the launching pad what would its velocity be if a ground
the equation connecting s p and f for a simple lens can be employed for spherical mirrors too a concave mirror with a
the isotope 3215p is produced by the reaction n --gt 3215p p what must be the target
a meter stick moving in a direction parallel to its length appears to be only 40cm long to an observer what is the
an automobile can be considered to be mounted on four identical springs as far as vertical oscillations are concerned
the astronaut whose heart rate on earth is 65 per minute increase his velocity to v95c what is now his heart rate as
a 1000 hz sound travels through pure oxygen the wavelength of the sound is measured to be 065m what is the speed of
the laser used in cornea surgery to treat corneal disease is the excimer laser which emits ultraviolet light with a