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A small statue has a height of 3.5 cm and is placed in front of a concave mirror. The image of the statue is inverted, 1.5 cm tall, and located 12 cm away from the mirror. Find the focal length of the mirror.
An electron ( mass = 9.11×10?31kg ) leaves one end of a TV picture tube with zero initial speed and travels in a straight line to the accelerating grid, If the accelerating force is constant, compute the acceleration of the electron
A duck is swimming down a river and passes a slow moving log. what is the ratio of the log\'s mass to the duck\'s mass
The 15g head of a bobble-head doll oscillates in SHM at a frequency of 4.0Hz. What is the head's time constant
A rock is thrown downward from the top of a 39.8-m-tall tower with an initial speed of 9 m/s. Assuming negligible air resistance, what is the speed of the rock
The wave function for a wave on a taut string is y(x,t) = 0.355 sin [(9)(pi)(t) - (3)(pi)(x) + (pi/4)], where x and y are in meters and t is in seconds. What is the energy contained in each cycle of the wave
A string is vibrating at a frequency of 5.00Hz and the distance between two successive nodes is 0.250 m. What is the speed of the waves on the string
A diffraction grating produces a first order bright fringe that is 0.156 m away from the central bright fringe on a flat screen which is 0.550 m away. find the wavelength of the light shining on the grating
A 40 kg artillery shell was fired from a cannon with an initial speed of 84 m/s at a 45° angle above the ground. How far from the cannon (in m) did the lighter piece land
A 10000 car comes to a bridge during a storm and finds the bridge washed out. The 650 driver must get to the other side, so he decides to try leaping it with his car. What is the speed of the car just before it lands safely on the other side
Fish are hung on a spring scale to determine their mass (most fishermen feel no obligation to report the mass truthfully). How far apart are the half-kilogram marks on the scale
In an internal combustion engine, the air-fuel mixture at the end of the ignition phase has volume 7.34×10?4 m3, what is the final pressure after the expansion
Calculate the gravitational force between the Sun and the Earth. Use the following numbers. G = 6.67 x 10-11 m3/kg/s2, Mass of the Sun (M_sun) = 2.0 x 1030 kg
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