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leonardo da vinci 1452-1519 is credited with being the first to perform quantitative experiments on friction though
a skier is being pulled by a tow rope attached to a boat as the driver pushes the throttle forward the skier
objects with masses of 490 kilogram and a 190 kilogram are separated by 0400 metera determine the net gravitational
a string with a length of 30 m has two adjacent resonances at frequencies 112 hz and 140 hz1 decide the speed of the
a handball is thrown directly upward with an initial velocity of 176 ftsec draw a diagram label velocity and time every
a handball is thrown straight upward and is in the air for a total time of 8 s draw a diagram label time and velocity
two polarizers are oriented at 73deg to one another unpolarized light falls on them what fraction of the light
two forces act on a 50 kilogram object sitting on a frictionless horizontal surface one force is 30 newton in the
a rotating wheel requires 500 seconds to rotate 280 revolutions its angular velocity at the end of the 500 second
monochromatic light of wavelength 675 nm falls on a slit if the angle among the first bright fringes on either side of
a gasoline engine takes in 161 x 104 j of heat and delivers 3700 j of work per cyclenbsp the heat is obtained with
a wind turbine is initially spinning at a fix angular speed as the winds strength gradually increases the turbine
the trap-jaw ant can snap its mandibles shut in as little as 11 x 10-4nbspsecond in order to shut both mandibles rotate
he area of a typical eardrum is about 50 multiplied by 10-5m2a compute the sound power incident on an eardrum at the
a soccer player horizontally kicks a ball of mass 0608 kilogram which is initially at rest the players foot is in
a plan convex lens with radius of curvature r 34 m is in contact by a flat plate of glass a light source and the
a small moon of a giant planet has an orbital period of 141 days and an orbital radius of 410 x 105 kilometer from
a 63-turn circular coil radius 49 cm with a total resistance of 69 omega is placed in a uniform magnetic field
the superman ride at magic mountain advertises a maximum speed of 100 mph find the kinetic energy in joules of a 3000
a 031 mev x-ray photon collides by an electron and scatters straight back the way that it came1 what is the energy of
a force f acts on an object undergoing a displacement s the force being oriented at an angle theta with respect to the
a sailor strikes the side of his ship just below the waterline he hears the echo of the sound reflected from the ocean
two objects attract each other gravitationally by a force of 25 x 10-10 n when they are 025m apart their total mass is
two long parallel wires carry unequal currents in the similar direction the ratio of the currents is 3 to 1 the
1 a copper wire of length 25 cm is in a magnetic field of 020t if it has mass of 10g what is the minimum current during