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What is the vergence incident on a + 5.00 D lens that yields an emergent parallel pencil? Where must an object be placed to yield this vergence? ANS. Vergence = - 5.00 D; object located - 20 cm or 20 cm in front of (to the left of) the lens
A pinhole camera is used to photograph a model train. Where must the model be placed so that the image formed on the film 5 cm behind the pinhole is 0.1 times the size of the object? ANS. Object is 50 cm in front of the pinhole
A 7 cm high object placed in front of a pinhole camera forms a 7 cm high image in the film plane. If the object is moved 10 cm closer to the pinhole, the image doubles in size. How far from the pinhole is the film plane? ANS. Film plane is 20 cm behind the pinhole
Illustrate what diameter has tip of the hour hand with 100 mil/hr tangential speed? If a 10 inch wide top is spinning at 300 RPM, what is the tangential speed at the widest part?
A car has an initial position of x = 0 m, an initial velocity of 0 m/s, and a constant acceleration of 4.5 m/s2. What is its velocity when the time is 6.0 seconds?
How far from a concave mirror of radius 0.25 m must an object be place for a real image to be formed 1 m from the mirror? What is the magnification of that image
What is a stationary state in quantum mechanics? And if our system is in stationary state, we have time independent shrodinger equation.
A curved mirror has a focal point. Images form at the focal point, right? But I've seen problems where this is not true. I am really confused. Can you help clear me up? What is the point of the focal point and where is the image if I am wrong??
While leaving the movie theatre after a great show, your friend comments on how cold it is outside
What percentage of the neutrons would not interact if the concrete slab were made 36.0 cm thick? I know this is 1.305x10^1. B) How many centimeters thick would the concrete need to be so that 18.0 per cent of the neutrons are transmitted?
A particle has a rest mass of 6.60 x 10-27 kg and a momentum of 2.16 x 10-18 kg • m/s. What is the total energy (kinetic plus rest energy) of the particle
An electron is traveling through a uniform electric field. The field is constant and given by E=(2.00 x 10^-11 N/C)i - (1.2 x 10^-11 N/C)j. At t=0 s the electron is at the orgin and traveling in the x direction at a speed of 1.90 m/s. What is its pos..
Two kilograms of steam at 2 MPa, 250° C are contained in a rigid vessel. How much heat must be removed from this vessel to cool it to 25° C
Consider a bar (L=3.00m) is sliding to the right on 2 rails with a velocity (0.75 m/s) towards a resistor (20 ohms), calculate the "Magnetic Braking force"
A copper beaker of mass 0.20 kg contains 0.10 kg of water at 20.0degree C. A block of silver of mass 100 g at 90.0 degree C is added to the beaker of water. The entire system is thermally insulated from the surroundings, (specific heats- copper: 3..
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