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a 75 n man stands in the middle of a frozen pond of radius 200 m he is unable to get to the other side because of a
two cylindrical glass beads each of mass m 44 mg are set on their flat ends on a horizontal insulating surface
a 3 meter long cylindrical support beam diameter 1 cm increases in length by 3 mm if the metal alloy beam has a youngs
the central atom in a molecule has three regions of high electron-pair density what type of hybrid orbitals are formed
a 5 kg ball strikes a massive wall at 11 ms at an angle of 650deg with the plane of the wall it bounces off the wall
you are standing on the ground at the origin of a coordinate system an airplane flies over you with constant velocity
normal gastric juice has a ph of about 2 assuming that gastric juice is primarily aqueous hcl what is the hcl
a ball of mass 015 kg is dropped from rest from a height of 135 m it rebounds from the floor to reach a height of 096
a u-shaped tube is partly filled with water and partly filled with a liquid that does not mix with water both sides of
a non-ideal battery has an emf of 240v when no current is drawn and a terminal voltage of 22v when a 100 resistors is
what is the energy of photon required to cause the electron in a hyrogen atom to undergo a transition from n2 state to
a 50-uf capacitor is charged so that the voltage drop across its plates is 50v a 100-ufcapcitor is similarly charged so
the electron in the n1 state of a hydrogen atom absorbs a photon with an energy of 212x10-18 j what is the final state
a pitcher throws a curveball that reaches the catcher in 064 s the ball curves because it is spinning at an average
if the average bohr radius in the n1 orbit 325x10-8m what is the wavelength of the standing electron
a 92 kg astronaut and a 1200 kg satellite are at rest relative to the space shuttle the astronaut pushes on the
which of the following sets of the four quantum numbers n 1 ml and ms describes one of the outermost electrons in a
suppose air with a density of 129 kgm3 is flowing into a venturi meter the narrow section of the pipe at point a has a
a chemist trying to synthesize a particular compound attempts two different synthesis reactions the equilibrium
as a technician in a large pharmaceutical research firm you need to produce 450ml of 100m potassium phosphate buffer
the mars rover is moving along at a speed of 2 ms it knows how to motor in a straight line and in its sights it spies a
an electron has a velocity of 60 106 ms in the positive x direction at a point where the magnetic field has the
you need to produce a buffer solution that has a ph of 550 you already have a solution that contains 10 mmol millimoles
an automatic dryer spins wet clothes at an angular speed of 42 rads starting from rest the dryer reaches its operating
a wind turbine is initially spinning at a constant angular speed as the winds strength gradually increases the turbine