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a spherical pinball initially at rest rolls down a ramp inclined at 18 degrees relative to horizontala what is its
after watching a news story about a fire in a high rise apartment building you and friend decide to design an emergency
a glass lens has a convex surface with radius 250 cm and a concave surface with a radius of 500 cm the glass has index
a 600 gram particle initially at rest at the origin is subjected to a force of f15i20j n which pushes the particle
a velocity selector has a magnetic field of magnitude 032 t perpendicular to an electric field of magnitude of 034 mvma
250 moles of a monatomic ideal gas expand adiabatically from an initial temperature of 300k and an initial volume of
a person wears a hearing aid that uniformly increases the intensity level of all audible frequencies of sound by 325 db
a person consumes a meal containing 17 kcal what is the power this meal produces if it is to be burned off due to
a system consists of 40 kg of water at 85 degrees celsius 35 j of work is done on the system by stirring with a paddle
a simple pendulum is constructed from a mass of 2 kg and a massless string of length 35 m the pendulum is pulled 55 cm
the anomalous zeeman effect is studied in an advanced student laboratory a spectral lamp is filled with the vapor of an
calculate the pressure exerted on the ground by a 57 kg person standing on one foot assume that the bottom of the
what is the minimum diameter mirror on a telescope that would allow you to see details as small as 485 km on the moon
a puck slides on a surface for 56 m before it stops if it was moving at a velocity of 15 ms and has a mass of 12 kg
a tennis player hits a 145 kg tennis ball with a racket of mass 25 kg if he hits the ball with a velocity of 75 ms and
a string fixed at both ends is 898 m long and has a mass of 0125 kg it is subjected to a tension of 920 n and set
1 a sodium surface is illuminated with 300 nm wavelength light if the stopping potential is found to be 168 v
lightbulbs with the power ratings giving in the figure are connected in a circuit as showna what current does the
an eagle with 18m wingspan flaps its wings 21 times per minute each stroke extending from 42u2218above the horizontal
a boy hears an eco of his own voice from a distant hill after 1s the speed of the sound is 340ms what is the distance
two waves are traveling in the same direction along a stretched string the waves are 450deg out of phase each wave has
a crate of mass 2000 kg is hanging from a crane at the end of a cable 12 m long if we attach a horizontal rope to this
an inductor of 493 mh with a resistance o44 ohms is connected to a power supply with a maximum voltage of 264v and a
a grade school student plans to build a 31-power telescope as a science fair project she starts with a magnifying glass
the tube length of a microscope is defined to be the difference between the objective image distance and objective