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The image behind a convex mirror (radius of curvature =72 cm) is located 21 cm from the mirror.
a) Where is the object located?
b) What is the magnification of the mirror?
c) Decide whether the image is upright or inverted.
d) Decide whether the image is larger or smaller than the object.
Christian is making a Tyrolean traverse as shown in the figure. That is, he traverses a chasm by stringing a rope between a tree on one side of the chasm and a tree on the opposite side, 23m away.determine the tension force in the rope
Which container has more gas molecules?
For a string stretched between two supports, two successive standing-wave frequencies are 505Hz and 630Hz . There are other standing-wave frequencies lower than 505Hz and higher than 630Hz.
a bird lands on a bare copper wire carrying a current of 15 a. the wire is 8 gauge which means that its cross-sectional
A speed skater moving across frictionless ice at 8.1{\rm m}/{\rm s} hits a 6.0{\rm m} -wide patch of rough ice. What is her acceleration on the rough ice
A 1.78 m long air column is open at both ends. The frequency of a certain harmonic is 828 Hz, and the frequency of the next-higher harmonic is 920 Hz. find out the speed of sound in the air column.
An object is solid throughout. When the object is completely submerged in ethyl alcohol, its apparent weight is 15.8 N. What is the volume of the object
Valerie is able to do 1200 joules of work in 10seconds. Brett is able to do 5000 joules of work in 50 seconds. Who is more powerful.
In the last seconds of the championship basketball game, a 7 ft center's team is down by 2 points. He must make a 3 point shot to win the game. He is standing on the 3 point shot line.
a. a lever is used to lift a heavy load. when a 40 n force pushes one end of the lever down 2.2 m the load rises 0.8 m.
A magnetron in a microwave oven emits microwaves with frequency=2450 MHv. What magnetic field strength would be required for electrons to move in circular paths with this frequence?
A plane is headed east with an air speed of 272.0 m/s, Find the velocity of the plane relative to the earth
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