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An object moves according to x = 3 m e^(-2/s t), y = 4 m sin(3/s t), z = -5 m cos(3/st) . a. Find its velocity. b. Find its acceleration.
Note: s is seconds ex:-2/s means -2 per second and m is meters
A step-down transformer is used for recharging the batteries of portable devices. The turns ratio N2/N1 for a particular transformer used in a CD player is 4:57. find the power delivered to the CD player
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Light of wavelength 619 nm is incident normally on a diffraction grating. Two adjacent maxima occur at angles given by sin ? = 0.20 and sin ? = 0.32. The fourth-order maxima are missing, What is the separation between adjacent slits
Three resistors with values 1 ohm, 2 ohm and 4 ohm are connected in series in a circuit with a 9V battery. What is the total equivalent resistance
a wire carrying a current is placed in a uniform magnetic field. When a current of 3.7A flows in the wire there is a force of 0,075N on each 18cm of wire in the field
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A sensitive gravimeter at a mountain observatory finds that the free-fall acceleration is 8.5×10^?3 m/s^2 less than that at sea level. What is the observatory's altitude
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