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Two strings are vibrating at the same frequency of 150 Hz. After the tension in one of the strings is decreased, an observer hears four beats each second when the strings vibrate together. Find the new frequency in the adjusted string.
when a solid cylindrical rod is connected across a fixed potential difference a current i flows through the rod.what
Ask a A projectile is fired with an initial speed of 66.4m/sat an angle of 37.6? above the horizontal on a long flat firing range. Determine the direction of the projectile 1.32s after firing
a banked circular highway curve is designed for traffic moving at 55 kmh. the radius of the curve is 207 m. traffic is
A 3.0-uC point charge is placed in an external uniform electric fieldof 1.6 x 104 N/C. At what distance from the charge is the net electric field zero
John measured the thickness of a book using a ruler. Calculate the mean thickness of the book.
A kangaroo is capable of jumping to a height of 2.62 m. Determine the takeoff speed of the kangaroo
Two crickets, Chirpy and Milada, jump from the top of a vertical cliff. Chirpy just drops and reaches the ground in 4.00s, How far from the base of the cliff will Milada hit the ground
An incident X-ray photon of wavelength 0.2800 nm is scattered from an electron that is initially at rest. find the momentum gained by the electron
Three equal charges of q= +4.00x10^-7 care located at the corners of a right triangle whose sides are the length 6.00cm, 8.00cm, and 10.00cm. Find the net force of the charge located
A light spring having a force constant of 139N/m is used to pull a 9.60kg sled on a horizontal ice rink. The coefficient of kinetic friction between the sled and the ice is 0.200. The sled has an acceleration of 2.40m/s^2 . A)Calculate the net upw..
A bat moving with a speed of 3.15{\rm m/s} and emitting sound of 39.0{\rm kHz}, What frequency is heard by the moth
A group of hikers hears an echo 1.50 s after shouting. If the temperature is 24.0°C, how far away is the mountain that reflected the sound wave
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