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1 a car moving at 15 ms skids to a stop in 20 m if the cartravels at 45ms how far will skid assuming the same
part aproblem a bike rider approaches a hill at aspeed of 85 ms the combined mass of the bike and the rider is850kg
scientists working in field of nanotechnology use either atop-down or bottom-up approach to construct tiny objects give
suppose that the bike rider in problem 15 pedaled up the hilland never came to a stop in what system is energy
de-orbit maneuvers are done to lower the perigee of the orbit to 60miles or less calculate the minimum change in
in a belly-flop diving contest the winter is the driver whomakes the biggest splash upon hitting the water the size of
the radius of a typical human eardrum is about 40 mmnbsp find the energy per second received by an eardrum when it
a baseball fan sitting in the cheap seats is 255m from home platenbsp how much time elapses between the instant the fan
three identical charges of 30 mc are placed at the vertices of anequilateral triangle which measures 30 cm on a side
q1 60 nc is at 030 m 0 q2 -10 nc is at 0 010 m q3 50 nc is at 0 0a what is the magnitude of the net force on the 50
a hospital patient receives a quick 500-cc blood transfusion through a needle with a length of 50 cm and an inner
in an industrial cooling process water is circulated through a system if the water is pumped with a speed of 045 ms
a 300 kg block starts from rest at the top of a 300 degreeincline and accelerates uniformly down the incline moving 200
an object 075 cm tall is placed 120 cm to the left of adiverging lens f -800cm a converging lens is placed 800 cmto
a a sample of an ideal gas is at a temperature of 320 k the rmsmolecular speed at this temperature is measured as 1631
a long sighted person can only see clearly objects further than 12 m awaythey wish to read a book held 30 cm away
a tennis ball is thrown out a window 28m above the ground at an initial velocity of 150 ms and 20 degrees below the
a 10-c charge is 15 m from a second charge and the force betweenthem is 10 nwhat is the magnitude of the second
two point charges initially 20 cm apart experience a 10-nforce if they are moved to a new separation of 80 cm what is
a steel cable with total length 20m and mass 100kg is connected to two polesnbsp the tension in the cable is 2000n and
assume that while pecking on a tree the woodpeckers head comes to a stop from an initial velocity of 07 ms over a
a seagull flies at a speed of 10ms directly into the wind knowing that it takes the bird 25 min to travel 8km relative
a 1000 kg car is pushed up a 175 degree incline for a distance of300 m at a constant speed assume the applied force is
a covex lens of focal length 10 cm placed 40 cm in front of aconcave lens of focal length 25 cma small object is placed
a block of mass m is attached to a spring ofspring constant k and is moving with constant speed in a horizontalcircle