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A cannon fires a cannonball from the top of a wall at a speed of 29.42 m/s and an angle of 13.75 degrees from the horizontal. A cannonball that was accidentally dropped from the top of the castle hits the water below in 1.32 s. What is the horizontal distance from the wall where the fired cannonball hits the ground?
A standing wave is created on a string of length 1.0 m and fixed at both ends. What is the wavelength of the third harmonic
Make a drawing of a metal rod that has length 12cm and a total mass of 70g including two metal loops at both ends, which go around two metal poles. find the magnitude of the magnetic field in the region of the rod
an object of some undetermined material and mass is suspended by a spring of unknown spring constant. the spring is
A wire with a resistance of 7.1 Ω is drawn out through a die so that its new length is 5 times its original length. Find the resistance of the longer wire, assuming that the resistivity and density of the material are unchanged.
A 60.0-kg runner expends 300 W of power while running a marathon. determine the volume of bodily fluid (assume it is water) lost per hour
A current of 10^-14 A is produced in a free-air chamber operating under saturation conditions. The sensitive volume, in which electronic equilibrium exists, contains 0.22g of air. What is the exposure rate .
A solenoid 1.52 m long and 2.60 cm in diameter carries a current of 19.7 A. The magnitude of the magnetic field inside thesolenoid is 17.0 mT. Find the length of the wire forming the solenoid.
A playground carousel is free to rotate about its center onfrictionless bearings, and air resistance is negligable. What is the person's mass
A pair of slits, separated by 0.200mm, is illuminated by light having a wavelength ofλ = 592 nm. Aninterference pattern is observed on a screen 130 cm from the slits. Consider a point on the screen located at y = 1.90 cmfrom the central maximum of th..
A positron (q = +e) moves at 4.3x10^7 m/s in a magnetic field of magnitude 0.52 T. The magnetic force on the positron has magnitude 2.0x10^-12 N. What is the angle between the velocity and the field?
A ball attached to a string starts at rest and undergoes a constantangular acceleration as it travels in a horizontal circle of radius0.30m. What is the tangential acceleration of the ball
a turntable 1.50m in diameter rotates at 80.0rpm. two speakers each giving off sound of wavelength 30.7cm are attached
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