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A farsighted person has a nearpoint of 50 cm from her eyes. She wants glasses that will let her see objects at a distance of only 25 cm from her eyes. Determine the focal length of the glasses needed if the glasses are 2 cm and 3 cm from her eyes. (Remember, a converging lens has a positive focal length and a diverging lens has a negative focal length.)
A cardinal (Richmondena cardinalis) of mass 3.60×10-2 kg and a baseball of mass 0.140 kg have the same kinetic energy. What is the ratio of cardinal's magnitude p_c of momentum to the magnitude p_b of the baseball's momentum.
Boxes A and B have masses of 12 kg and 4 kg, in that order. The two boxes are released from rest. Use conservation of energy to find out the boxes speed when box B has fallen a distance of 00.5 m.
A sport utility vehicle (SUV) and a sports car travel around the same horizontal curve. The SUV has a static stability factor of 0.80 and can negotiate the curve at a most speed of 18 m/s without rolling over.
Differences in analysing a roller coaster system as particle and rigid body, such as the assumption(s) made when treating the roller coaster as particle, parameters involved in kinematic and kinetic analysis.
A 1500 kg car carrying four 87kg people travels over a rough "washboard" dirt road with corrugations 4.40 m apart which causes the car to bounce on its spring suspension. The car bounces with maximum amplitude while its speed is 19km/h. The car now s..
The 40 kg man in the roller coaster car is sitting on a bathroom scale. If he is travelling at 35.3 m/s at the point shown and the radius of vertical coaster track is 53 meters, to the nearest newton what does the scale read?
A baby elephant is fixed in a mud hole. To help pull it out game keepers use a rope to apply a force A as part a. By itself, though, force A is insufficient.
Two wires are identical, except that one is aluminium and one is gold. The aluminium wire has a resistance of 0.18. What is resistance of the gold wire.
Charges of 3.00 nC, -2.00 nC, -7.00 nC, and 1.00 nC are contained inside a rectangular box with length 1.00 m, width 2.00 m, and height 2.50 m. Outside the box are charges of 1.00 nC and 4.00 nC. What is the electric flux through the surface of th..
Imagine there has been a drastic rise in food-borne illness in the city in which you live. The public lacks the knowledge about proper food safety to stop these problems and they also do not know how to find precise nutritional information to educ..
What is magnitude of the unknown force
How fast is the roller coaster moving at the top of the loop
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