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an isotope of krypton has a half-life of 3 min a sample of this isotope produces 1000 counts per minute in a geiger
large insects such as locusts can jump as far as 75 centimeter horizontally a level surface an entomologist analyzed a
a rock is thrown off a 120 meter cliff at a velocity of 29ms 37o above horizontal evaluate what is the final velocity
a modern-day zeppelin holds 8310 m3 of helium calculate its maximum payload at sea level suppose the helium and air to
points a and b have electric potentials of 231 volt and 129 volt correspondingly when an electron is released from
a human hair is about 800 microm thick if one uses a concave mirror with a focal length of 250 centimeter and obtains
the position of a particular particle as a function of time is given with r 960 ti 885j - 100t2km where t is in
a bus accelerates at 4 ms2 supposing the bus starts from rest determine how much time does it need to accelerate to a
an athlete whirls an 881 kilogram hammer tied to the end of a 12 meter chain in a simple horizontal circle where you
a surveyor gauges the distance across a straight river by the following method starting directly across from a tree on
a constant torque of 224 nbullm is applied to a grindstone for which the moment of inertia is 0166 kgbullm2 determine
a block with a speaker bolted to it is connected to a spring having spring constant k and oscillates as shown in figure
a 32 kilogram ball strikes a wall with a velocity of 64 ms to the left the ball bounces off with a velocity of 53 ms to
the ceramic coffee cup in the figure below with m 135 g and c 1090 jkg middot k is initially at room temperature
a 197-g lead ball at a temperature of 729deg c is placed in a light calorimeter containing 178 g of water at 245deg c
through a particular process the pressure of the gas in a heat engine increases from 115times105 pa to 237times105 pa
two identical charges are separated by 38 millimeter and experiences a repulsion force of 9 n determine the amount of
determine what is the total charge of all protons in 6 gram of water
determine how many electrons have to be added to 1 milligram metal sphere such that another 1c charge placed 42
two styrofoam balls 100 g each are charged with identical positive charge q and suspended from the equal point by two
positive charge q is distributed uniformly along a thin plastic rod that forms one quarter of a circle in the third
through a thunderstorm winds with a speed of 487 ms blow across a flat roof with an area of 687 m2 a discover the
two charges one is 7 nc and another one is 13 nc are separated by 1 meter distance find distance from the smaller
water flows at the rate of 299 kgs through a hose with a diameter of 370 cm a what is the speed of water in this hose b
two charges one is - 84 nc and other is 2 x 84 nc are separated by 2 meter distance obtain the electric field at the