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1. Use a ray diagram to show the image of an object 30 cm away from a convex lens with focal length 12cm. Describe the image fully and give the magnification/reduction.
2. A concave lens has a focal length of 8cm. Draw a ray diagram to show the formation of an image. Describe the image fully and give the magnification/reduction.
3. A convex lens with a focal length of 5cm is used as a magnifying glass. An ant is placed 3cm from the lens. Draw a ray diagram to show that the image is virtual, upright and magnified. Find the position of the image and the magnification.
4. A camera lens has focal length 55mm and an object is 500mm away. a) Calculate the position of the image and the magnification (or reduction). b) Why is no image formed if the object is placed at the focal point? c) At what distance from an object must the camera lens be placed if the image isi to be the same size as the object?
5. Explain how different mirror geometries can form both real and virtual images.
We have a diatomic ideal gas with a y of 5/2. It starts with an initial pressure of 1kPa, an initial temperature of 100 K, and an initial volume of 10 m3. What was the work done
A car is negotiating a flat circular curve of radius 50 m with aspeed of 20 m/s. What is the centripetal acceleration of the car
A woman with her arms outstretched has a moment of inertia of 2 kg m^2. She rotates on a stool at an angular velocity of 6rad s^-1. what is her angular velocity
q1. an electric field of 220000 nc points due west at a certain spot. what is the magnitude of the force that acts on a
Derive the algebraic equations for the coordinate curves and coordinate surfaces in pherical polar coordinate systems
Two slits are spaced 0.300mm apart and are placed 0.75m from a screen. evaluate the wavelength of the light
Two 2.00 cm diameter disks spaced 2.239 mm apart from a parallel plate capacitor. The electric field between the disks is 445,140.438 V/m. What was the electron's speed as it left the negative plate
A 124 kilogram balloon carrying a 22 kilogram basket is descending with a constant downward velocity of 18.8 m/s. Determine how high was the balloon when the rock was thrown out
An Air France Airbus A 380 accelerates from rest to lift-off speed of 79.87 m/s in 28.90 s. Each of the plane's two jet engines provides a forward force (thrust) of 101.00 kN. What is the mass of the plane?
Many nuclear reactors use heavy water moderators in which elastic collisions occur between neutrons and deuterons of mass 2.0 u. What is the speed of a neutron, expressed as a fraction of its original speed
Bored, a boy shoots his pellet gun at a piece of cheese that sits, keeping cool for dinner guests, on a massive block of ice. On one particular shot, his 1.4 g pellet gets stuck in the cheese, causing it to slide 25 cm before coming to a stop. If the..
As the drawing illustrates, a siren can be made by blowing a jet of air through 20 equally spaced holes in a rotating disk. What must be the angular speed in radians per second of the disk
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