Physics, 19.10.2019 04:30 dragon2998
Consider a gun of mass m (when unloaded) that fires a shell of mass m with muzzle speed v. (that is, the shell's speed relative to the gun is v.) assuming that the gun is completely free to recoil (no external forces on gun or shell), use conservation of momentum to show that the shell's speed relative to the ground is v /(1 m/m).
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Natural forces that can alter ecosystems include seasons and climate changes. t or f
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Physics, 22.06.2019 09:30
Need asap ‼️ 20 pts which gravitational force field diagram is drawn correctly? (answers in pictures below)
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Physics, 22.06.2019 14:00
Awater balloon launcher uses an elastic band with a spring constant of 115 n/m to use thee launcher you stretch thee band back with a balloon n it the water balloons have a mass of 1.3 kg a) if you stretch the band by 0.8 m, what elastic force will the band exert? b) with the band stretched 0.8 m, how much elastic potential energy is stored in the spring? c) if you release the band, it pushes forward. what is the kinetic energy of the balloon when it reaches the natural length of the band? d) what is the speed of the balloon when it reaches the natural length of the band?
Answers: 1
Physics, 22.06.2019 16:30
Large electric fields in cell membranes cause ions to move through the cell wall. the field strength in a typical membrane is 1.0 x 10 7 n/c. what is the magnitude of the force on a calcium ion with charge +e? what is its acceleration? is it possible for a particle with the same charge as as calcium to have a different acceleration if placed at this location? what would change the acceleration: mass of the particle? diameter of the particle?
Answers: 2
Consider a gun of mass m (when unloaded) that fires a shell of mass m with muzzle speed v. (that is,...
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