Evaluating the focal length of the mirror
A concave mirror consist s of a object located 40cm in front of it. The image forms 60 cm in front of the mirror. Determine the focal length of the mirror?
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When the screen extends 90 cm to either side from the central maximum, determine how many bright fringes will become visible on it?
A stiff wire bent to the semicircle of radius a = 2cm is rotated at constant angular speed 40rev/s in a uniform 20mT magnetic field. Determine the i) frequency and ii) amplitude of the emf induced in the loop?
The item which cost $2 thirty years ago now costs $10. Determine the simple exponential function of form y about which models cost of item.
Determine the intensity of busy street traffic when the decibel level is 70 db? Keep in mind that the threshold of hearing is 0 dB and consists of an intensity of 1.0 E-12 W/m2.
A 500 line/mm diffraction grating is illuminated through light of wavelength 510 m. Determine how many bright fringes are view on a 2.0-m-wide screen positioned behind the grating?
A thin lens of a focal length 12.5 cm consists of a 5.0 cm tall object positioned 10 cm in front of it. Where will the image be made?
Whole-sale cost of each box of candy is $1.50. How many boxes should be sold each month to get the profit of at least $60? Graph revenue function.
A laboratory electromagnet generates a magnetic field of magnitude 3.60 T. A proton moves via this field with a speed of 7.00*10^6 m/s. (i) Determine the magnitude of the maximum magnetic force which could be applied on the proton.
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