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A concave makeup mirror is designed so that aperson 23 cm in front of it seesan upright image magnified by a factor of two. What is the radius of curvature of the mirror in meters?
A swimming pool has dimensions 32.0 m ? 12.0 m and a flat bottom. The pool is filled to a depth of 2.30 m with fresh water. What is the force exerted by the water on the bottom
A 10-? reistor is connected to a 120-V ac power supply. What is the peak current through the resistor
please try to solve this homework and explain it very well . and i want to receive it tomorrow. and explain every
A coil with 41 turns of wire is wrapped on a frame with a square cross-section 1.85 cm on a side. Find the magnitude of the induced current in the coil while the field is changing
A 1.10 kg hollowball with a radius of 0.134 m, filled with air, is released fromrest at depth of 2.16 m in a pool of water. What is the work done by the net vertical force on the ball as the ball moves from the bottom of thepool to the surface
An airplane with a speed of 87.7 m/s is climbing upward at an angle of 35.1 ° with respect to the horizontal. determine the angle of the velocity vector of the package
A horizontal power line of length 43 m carries a current of 1.3 kA. Earth's magnetic field at this location has a magnitude equal to 5.0 10-5 T and makes an angle of 65° with the power line. Find the magnitude and direction of the magnetic force o..
Two springs with spring constants k1 and k2 are put togetherend-to-end. Let x1 be the amount by whichthe rst spring is stretched relative to its equilibrium length, andsimilarly for x2.
You're using a rope to pull a sled at constant velocity across level snow,with coefficient of kinetic friction 0.050 between sled and the snow. With what force should you pull with the rope horizontal
A helium-neon laser (wavelength = 630 nm) is used in a single-slit experiment with a screen 7.5 m away from the slit. what is the width of the central bright fringe on the screen
question1a 1.10 m long straight wire section has a resistance r 46.0 ohm and is linked with conducting wire of
A concave mirror has a radius of curvature of 34.8 cm. What is the height of the image of the insect
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