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A telescope can be used as a camera if the film is placed at the image position of the objective lens (or mirror); so the objective lens becomes the lens of the camera. If a 2.00 m focal length objective lens of a telescope is used to photograph the image of two stars that are 20.0 mm apart on the film, what is the angular separation of the two stars?
How fast should the car be traveling just as it leaves the cliff in order to just clear the river and land safely on the opposite side?
Light of wavelength 530 nm passes through a slit of width 0.210 mm. The width of the central maximum on a screen is 8.50 mm. How far is the screen from the slit
Take element Z = 21 from the periodic table. Ionize it 20 times so that there is only one electron left orbiting around the nucleus. What is the ground state energy of the electron
A string of mass 0.0003kg/m and 0.5m long is vibrating 200 cycles per second. What must be the tension? What hanging mass would generate this tension? I got 12N for tension. Is this correct? And how would you solve for hanging mass.
Suppose in the double-slit arrangement, d = 0.150mm, L =120cm, %u03BB =833nm, What is the path difference %u03B4 for the rays from the two slits arriving at point P
A pulley hanging off the side of a building supports a 0.57 kg bucket on a rope. The pulley releases rope as the bucket is lowered to the ground. What is the distance to ground
A sound wave with intensity 10 mW/m2 interferes destructively with a sound wave that has an intensity of 1 mW/m2. What is the intensity of the superposition of the two
A 671-kg cannon fires a 18.5-kg projectile with a speed of 273 m/s with respect to the muzzle. what is the speed of the projectile with respect to the ground
An FM radio station transmits at a frequency of 80 MHz and a total power of 65 kW. How many photons does this station emit each second
Two long bar magnets lying on a table with their south poles facing each other exert a force of 12 N on each other. what is the new value of this force
You are asked to design a parallel-plate capacitor having a capacitance of 1 F and a plate separation of 1.00 mm. compute the required surface area of each plate. Is this a realistic size for a capacitor.
Let the x axis be parallel to the ground, +y direction be vertically upward, and take as an origin the point on the ground directly below the top of the ramp.
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