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Here is the question which I am struggling on, please help me!
Question: You are examining a recent acquisition for your stamp collection through a hand-held reading glass (a converging lens).
Question 1: Determine the focal length of the lens, if when the reading glass is 2.82 cm from the stamp the image of the stamp appears to be five times the size of the actual stamp.
Please use as much detail as possible in answer.
A 1250 kg cannon, which fires a 80 kg shell with a speed of 546 m/s relative to the muzzle, is set at an elevation angle of 39° above the horizontal. At what angle with the ground is the shell projected
transverse waves with a speed of 52.0 ms are to be produced on a stretched string. a 5.40-m length of string with a
A 75-kg trqampoline artist jumps vertically upward from the top of a platform with a speed of 5.00 m/s. (a) how fast is he going as he lands on the trampoline 3.0m below? (b) If the trampoline behaves like a spring of spring constant 5.2 x 10^4 N/..
A woman at an airport is towing her 23.5-kg suitcase at constant speed by pulling on a strap at an angle ? above the horizontal. What is the magnitude of the normal force that the ground exerts on the suitcase
In a 30.0 s interval, 470 hailstonesstrike a glass window of area 0.600 m2 at an angle of45.0° to the window surface. Each hailstone has a mass of 5.00g and a speed of 8.30 m/s. If thecollisions are elastic, find the pressure on the window.
A 5.3MeV (kinetic energy) proton enters a 0.15T field, in a plane perpendicular to the field. What is the radius of its path
find at least five internet or magazine articlesadvertisements which depict an exercise or health myth. why do you
An LC circuit has a 9.00 m/H inductor. The current has its maximum value of 0.550 A at t= 0s . A short time later the capacitor reaches its maximum potential difference of 62.0 V. What is the value of the capacitance?
Three positive particles of equal charge +17uC are placed at the corners of an equilateral triangle of side 15.0 centimeter. Obtain the magnitude and direction of the net force on each particle due to the other two
A string with a mass per length of 2.00 gm/m is stretched with a force of 120 N between two points that are 0.400 m apart. What is the length of the organ pipe
An electron is accelerated to a speed where its total energy is 169 times larger than its rest energy. What is the speed of the electron in terms of the speed of light
An airplane traveling at half the speed of sound emits a sound of frequency 4.15 kHz. At what frequency does a stationary listener hear the sound as the plane approaches
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