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A mass on a spring vibrates in simple harmonic motion at a frequency of 4.0 Hz and an amplitude of 4.0 cm. If a timer is started when its displacement is a maximum (hence x =4cm when t=0), what is the acceleration magnitude when t= 3 s? What is the speed of the mass when t= 3 s?
a polar bear of mass 510 kg is floating on an iceberg in the ocean. as the ice melts how small can the iceberg get
A boat can travel 4.0 m/s in still water. With what speed, relativeto the shore, does it move in a river that is flowing at 1.0 m/s if the boat is headingup stream?
A square wire loop with sides 0.1 m and a current of 10 A is placed in a magnetic field of magnitude 0.1 T. What is magnetic dipole moment of the loop
The top of the spring is connected to a string of mass per unit length of 2:0 10??3 held under a tension of 80 N. What is the velocity of the pulse
A 65.0 kg skier on level snow coasts 153m to a stop from a speed of 1.20 m/s. find the coefficient of kinetic friction between the skis and the snow
q1. snoop in hot pursuit of the red baron is flying his vintage warplane in a loop-the-loop path. his instruments tell
The decay constant of Radon is .181/day. A sample of Radon contains 6.00x10^8 Radon atoms. How many atoms are left after 12 days
Light from an argon laser strikes a diffraction grating that has 5 310 grooves per centimeter. calculate vthe wavelength of the laser light
A block of unknown material is situated in air. Light is arranged such that point P is a source of many diverging rays of light. The rays of light that just undergo total internal reflection strike the bottom surface 5cm from point P. If the mate..
The net horizontal force on a 53000 kg railroad boxcar is 4950 N. What is the acceleration of the boxcar
the moon is 3.5 * 106 m in diameter and 3.8 * 108 m from the earth's surface. compute the diameter of the moon's image
questionone of the methods used to train astronauts for the effects of zero gravity in space is to put them in a
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