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a mirror with a 30 radius of curvature produces an image that is 24 cm in front of the mirror and inverted where is
technetium-99 has an excited state that decays by emission of a gamma ray the half-life o fthe excited state is 360
a bone is found in your backyard you decide to date it and discover is has an c-14 activity of 0097 bq per gram of
a block of mass m1 is 5 kg it is lying on a frictional horizontal surface the block is connected by a massless string
an ashtray slides across a table with a speed of 06 ms and falls off the edge if it takes 04 s to reach the floor how
a ball is thrown horizontally with a speed of 100 ms from the edge of the top of a building of height 196 m and later
you have a parallel plate capacitor with circular plates of radius 1 cm the distance between these plates is 4 cm and
a 500 ohm resistor 300-mh inductorr and 1100-uf capacitor are connected in series with a alternative voltage source
two 42 ohm resistors are connected in series to a 12 volt batterywhat is the total resistance of the circuitwhat is the
a uniform disk with a mass of 10 kg and radius of 20 cm is rotating on frictionless bearings with a rotational speed of
we vaporize 5kg of water at 100c the latent heat of vaporize of water is 226x106jkga the value of the waters
a gas cylinder of volume 26 liters contains an ideal gas at temperature 27 degrees c and pressure 1920 kpa some of the
a boat takes 300 hrs to travel 250 km down a river then 600 hrs to return the car travels the same speed with respet to
a large crate is pulled along a horizontal path at a constant speed by a cable that is inclined at an angle of 20deg
the space shuttle is in a 250 km high circular orbit it needs to reach 610 km high circular orbit to catch the hubble
an elevator ascends 200m with maximnum speed of 50 ms its acceleration and deceleration both have a magnitude of 10 ms2
john who is ice skating eastward collides with mary who is ice skating northward after the collison the two skaters are
the fundamental frequency of a closed pipe is 108 hz find the next higher harmonic for this
the linear acceleration of the center of mass of a yo-yo is 20ms2 as it rolls by gravity down its string if the mass of
a 40 kg box is sliding down a ramp angled at 15 degrees down from the horizontal the box is accelerating at 15 ms down
a 10000 kg spaceship is traveling without power 500 ms near an anomaly in space where the potential energy is u
you are driving a long thinking about a difficult physics problem and you fail to notice the warning lights at the
1 an l-r-c series circuit is connected to a 120 hz ac sourcethat has vrms 790v the circuit has a resistance of 760and
you have a 250- resistor and a 0400-h inductor suppose you take the resistor and inductor and make a series circuit
an inductor with l 915mh is connected across an ac source that has voltage amplitude 455va what is the phase angle for