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A drop of water on a countertop reflects light from a flower held2.80 cm directly above it. The flower’s diameter is 2.20 cm, and the diameter of the flower's image is 0.093 cm. What is the focal length of the water drop, assuming that it might be treated as a convex spherical mirror?
question an airplane is flying at an altitude of 2500m above the ground when it sees a stranded on a an island 4000m
Problem A candle is placed 22.36 cm in front of a convex mirror. When the convex mirror is replaced with a plane mirror, the image moves 7.0 cm farther away from the mirror. Find the focal length of the convex mirror.
When a ceiling fan rotating with an angular speed of2.70 {\rm rad/s} is turned off, a frictional torque of0.140 {\rm N \cdot m} slows it to a stop in 25.5 {\rm s}. What is the moment of inertia of the fan
A projectile proton with a speed of 500 m/s collides elastically with a target proton initially at rest. What is the speed of the target proton after the collision
imagine you are in an open field where two loudspeakers are set up and connected to the same amplifier so that they
A 1.5 {rm kg} block rests on top of a 7.5 {rm kg} block. The cord and pulley have negligible mass, and there is no significant friction anywhere. What force F should be applied to bottom block so the top block accelerates to the right at 2.60 m/s^..
A wire has a length of 4.18 x 10-2 m and is used tomake a circular coil of one turn. There is a current of 8.34 A in the wire. In the presence of a 6.34-T magnetic field, what is the maximum torque that this coil can experience?
A 280g ball is dropped from a height of 1.6m , bounces on a hard floor, and rebounds to a height of 1.1m. What maximum force does the floor exert on the ball
When you take multiple measurements of any variable, which erroris reduced? Random or Systematic? Explain.
A 1.2 µF capacitor has an electric field of 0.8x105 V/m between two metal plates 1.1 mm apart. What is the energy stored on the capacitor
Two small plastic spheres, one charged to -25 nC and the other to +25 nC , are connected by a 28-mm-long insulating rod. What is the maximum possible torque on the dipole
The index of refraction for violet light in silica flint glass is 1.65, and that for red light is 1.62. What is the angle of deviation for the red ray passing through a prism of apex angle
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