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your roommate is working on his bicycle and has the bike upside down he spins the 520 -diameter wheel and you notice
suppose the total power of a laser beam optical output power is 05 x 10-3 w if 46 percent of that power is inside a
susan driving north at 52 mph and shawn driving east at 52 mph are approaching an intersection what is shawns speed
imagine a hydrogen atom to consist of a single proton as a nucleus and a single electron which orbits the proton in a
a 380 kg block is pushed along the ceiling with a constant applied force of 850 n that acts at an angle of 550deg with
when a 21 ohm resistor is connected to a battery that has a 7 ohm internal resistance the terminal voltage of the
971-kg car starts from rest on a horizontal roadway and accelerates eastward for 500 s when it reaches a speed of 300
a cart is propelled over an xy plane its initial velocity has components vx 8 ms and vy 12 ms when it goes past 00 the
to withstand g-forces of up to 10 gs caused by suddenly pulling out of a steep dive fighter jet pilots train on a human
when two capacitors are connected in parallel their equivalent capacitance is 12 f when the same two capacitors are
a supply plane needs to drop a package of food to scientists working on a glacier in greenland the plane flies 150
in order for a middle to achieve a maximum range of 4000km what would its maximum height
two copper wires of the same gauge one has a length l and the other twice that if the first wire has a resistance r
a small button placed on a horizontal rotating platform with diameter 0310m will revolve with the platform when it is
a painter weighing 630 n climbs to a height of 50 m on a ladder how much work does it take what is the increase in the
a 50 kg block is tied to a 100kg block by a horizontal rope the 100kg block is being pulled by a 500n force that is 20o
the heaviest invertebrate is the giant squid which can have a weight of about 15 tons spread out over its length of 70
a golfer imparts a speed of 293 ms to a ball and it travels the maximum possible distance before landing on the green
a patient is going to be prescribed bifocals which will be 320 cm from the eye the prescribed powers in diopters for
a simple pendulum consists of a small object of mass m the bob suspended by a cord of length l of negligible mass a
two rubber bands cause an object to accelerate with acceleration a how many rubber bands are needed to cause an object
you push with a horizontal force of 480 against a 230 box pressing it against a rough wall to hold it in place the
a load of bricks with mass 158 hangs from one end of a rope that passes over a small frictionless pulley a
a toboggan approaches a snowy hill moving at 148 the coefficients of static and kinetic friction between the snow and
a light bulb radiates most strongly at a wavelength of about 3000 nm what is the temperature of its