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A double convex lens has 10cm and 15cm as its 2 radii of curvature. The image of an object placed 30cm from the lens is formed at 20 cm from the lens on the other side. Find the refractive index of the material of the lens. What will be the focal length ? What will be the focal length of the lens if it is immersed in water of RI 1.33?
A popgun uses a spring for which k=20 N/cm. How high can the gun shoot a 5.0 g projectile
Some bacteria are propelled by biological motors that spin hair-like flagella. How long does it take the motor to make one revolution
An electron starts from rest 54.9cm from a fixed point charge with Q = -0.278uC. How fast will the electron be moving when it is very far away
A uniformly charged conducting sphere of 1.4 m diameter has a surface charge density of 11 µC/m2, Find the net charge in coulombs on the sphere
What is the magnitude of the force on the bead. find the charge of the particle.
Compute the mass of a ball and speed of a puck after collision.
A 100000 liter water tower is to be drained. The pump can pull water out of the tank through a circular opening in the tank at a velocity of 10 meters per second
Unpolarized passes through two polarizers that are oriented 65 degrees to each other. What is the orientation of the polarizers
An object with a charge of 0.880 µC is placed at the center of a regular icosahedron with 20 equivalent surfaces. What is the electric flux through one surface of the icosahedron?
An object is placed 19cm from a certain mirror. The image is half the size of the object, inverted, What is the radius of curvature of the mirror
A standard 100 (120 ) lightbulb contains a 7.80 -long tungsten filament. The high-temperature resistivity of tungsten is. what is the resistance of a household
The electron gun in a TV picture tube accelerates electrons between two parallel plates 1.5cm apart with a 27 kV potential difference between them.
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