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A 1792 kg safe is 3.01 m above a heavy-duty spring when the rope holding the safe breaks. Thr safe hits the spring and compress it 50 cm. What is the spring constant of the spring?
A 60 kg person jumps from rest off a 5 m high tower straight down into the water. Determine the magnitude of the average forces that the water exerts on the diver
A sound wave, traveling at 353m/s, is emitted by the foghorn of a tugboat. How far away is the reflecting object
A lightning flash may transfer up to 30 C of charge through a potential difference of 10^8 V. How much energy does this involve
A capillary-tube viscometer is being selected to measure viscosity of a liquid food, If the tube length is 10 cm and a maximum pressure of 25 Pa can be measured, determine the tube diameter to be used
A 17 kg girl slides down a playground slide that is 3.1 m high. When she reaches the bottom of the slide, her speed is 1.3 m/s. what is the coefficient of friction between the girl and the slide
A convex Lens of focal length 18 cm is used as the magnifying glass. At what distance from a tiny insect should you hold this lens to get a magnification of +3.00.
what is the horizontal distance x between the two balloons.
A 5kg block is accelerated at 3 m/s^2 while fighting a frictional force of 25 N. What force needs to be applied to the block
A runner covers one lap of a circular track 40.0m in diameter in 63.3s. what were her average velocity(in m/s) for that half-lap
Two charges charges of -2.1 micro-coulombs and a charge of +2.1 micro-coulombs are placed on the corners of an equilateral triangle where the length of a side is 44 cm as shown in the sketch below. What is the magnitude of the total electric field..
An 8.00kg mas is at rest on an incline, the incline is 32.0degrees. The incline has a rough surface (us=0.375 and uk=0.250). A force F is applied to the mass, parallel to the incline, directed upward. Find the range of values the applied force F can..
A bullet of mass 10g and speed 500 m/s is fiered into a door and gets embeded exactly at the centre of the door, Calculate the angular speed of the door just after the bullet embeds into it
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