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shavingmakeup mirrors typically have one flat and one concave magnifying surface you find that you can project a
a ship sets sail from rotterdam the netherlands heading due north at 7 ms relative to the water the local ocean current
the bacterium escherichia coli or e coli is a single-celled organism that lives in the gut of healthy humans and
a shop sign weighing 210 n hangs from the end of a uniform 180-n beam as shown in figure 1 find the vertical force
bacteria vary somewhat in size but a diameter of 19 mum is not unusuala- what would be the volume in cubic centimeters
an electrical circuit is connected as shown in the figure on the right it contains two identical batteries the battery
a 2-kg block sits on a 4 kg block that is on a frictionless table the coefficient of friction between the blocks
consider the following figurea find the equivalent resistance between points a and b in the figureb calculate the
an airplane starts from an airport located at the origin o and flies 150 km in the direction 20o north of east to city
resistors of values r1 600 ohm r2 500 ohm r3 1100 ohm and r4 800 ohm are combined as shown what is the equivalent
in both a and b the acceleration on the 5-kg box m is as large as it can be without the box sliding find the
a show that a projectile with mass m can escape from the surface of a planet if it is launched vertically upward with a
in the x-y plane a charge of - 52 muc is on the x-axis at the point -40 cm 0 and a second charge of 75 muc is located
consider the following circuit with resistors 1-7 ohma what is the effective resistance of the circuit if only the
awire of length 180 m and cross-sectional area 600 x 10-6 m2 has a resistance of 375 r what is the resistance of a wire
1 the average television is said to be on 6 hours per day calculate the yearly cost of electricity in billions of
as a 75-slug automobile travels along a horizontal 3200-ft section of road it changes speed from 5 mih to 60 mih if the
1 the drawing shows a thin uniform rod that has a length of 030 m and a mass of 0080 kg this rod lies in the plane of
on average the electron and a proton in a hydrogen atom are separated by a distance of 530 x 10-11 m assume the orbit
the available energy contents of various kinds of food are often listed in calories charts one of these food calories
a 316 micro c and a -216 micro c charge are placed 445 cm apart at what point along the line joining them is the
at an auto race a member of the pit crew stands beside the track a car approaches him at 100 ms and emits a sound at
shown below is a 400-ft by 800-ft sheet of plywood with the upper left quadrant removed assume the plywood is uniform
in the wood machine shown below m1 200 kg and m2 770 kg the masses of the pulley and string are negligible by
it can be shown that an electromagnetic waves energy is equally divided between the electric field and the magnetic