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Electrons move through a certain electrical circuit at an average speed of 1.4 x 10-2 m/s. How long (in minutes) does it take an electron to traverse a 1.9 -m light bulb filament coil?
an astronaut lands on a distant planet and performs an experiment to determine the local value of g the acceleration
A uniform cord has a mass of 0.300 kg and a length of 6.00 m (see Figure below). The cord passes over a pulley and supports a 2.00-kg object. Find the speed of a pulse traveling from the wall to the pulley
What will be the acceleration of three of these objects glued together if they are pulled by two rubber bands
A 17 g lead bullet traveling at 218 m/s passes through a thin iron wall and emerges at a speed of 161 m/s. what will be the temperature rise of the bullet
A 46-kg skater is standing still in front of a wall. By pushing against the wall she propels her-self backward with a velocity of -1.2m/s. Determine direction and magnitude of the average force she exerts on the wall
A 3-m2 hot black surface at 80°C is losing heat to the surrounding air at 25°C by convection with a convection heat transfer coefficient of 12 W/m2.°C, Determine the total rate of heat loss from the surface
A golfer hits a shot to a green that is elevated 3.0 m above the point where the ball is struck. find the speed of the ball just before it lands
One end of a rope is tied to a block of mass 5.8 kg and you pull straight up on the other end of the rope to lift the block up off of the ground with an acceleration of 2.8 m/s2. What force does the rope exert on the block
find the radius r of the orbit of a geosynchronous satellite that circles the earth. note that r is measured from the
Sodium atoms in a Bose-Einstein condensate can slow the speed of light's energy propagation to 70 km/hr. Find the index of refraction for this material, and critical angle for total internal refraction if the atoms are otherwise in vacuum.
"Discuss critically the extent to which you accept the concept of corporate social responsibility"
Two blocks of mass m and 75 kg are connected via a light cord over a massless, frictionless pulley as shown in the attached figure. If the 75 kg block starts 2.0 m above the floor and takes 3.0 s to reach the floor when released from rest, what..
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