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Question: A 20 kg child is on a swing that hangs from 3.0-m-long chains. What is her speed (v) at the bottom at the arc if she swings out to a 45 degree angle before reversing direction? The response must be typed, single spaced, must be in times new roman font (size 12) and must follow the APA format.
A uniform horizontal lever of length 4.8 m pivoted at its mid-point is in equilibrium. The following forces are acting on the lever: an unknown upward force (force with upward vertical component) that makes an angle of 40 deg with the horizontal-left..
Describe the various elements necessary for effective leadership within a coalition. How does this apply to your professional practice or life?
q1. a rightward force of 302 n is applied to a 28.9 kg crate to accelerate it across the floor. the coefficient of
The nucleus of 8Be, which consists of 4 neutrons and 4 protons, is very unstable and spontaneously breaks into two alpha particles, Find the initial magnitude of the acceleration of the alpha particles due to this force
Phil finds an old bone at an archeological site and decides to date it. The site is located geographically at a position where the ratio of 14C to 12C in the atmosphere before the year 1900 was about 1.31 · 10-12
The mass of the space probe is 684kg and its initial velocity is 254 m/s. If the 650-uN force acts on the probe through a displacement of 2.25*10^9 m, what is its final speed?
If a curve with a radius of 60m is properly banked for a car traveling 60km/h what must the coefficient of friction before a car on the same curve traveling 90km/hr
A 63kg astronaut is on a spacewalkwhen the tether line to the shuttle breaks. find the astronaut's final speed with respect tothe shuttle after the tank is thrown
Miles Tugo is camping in Glacier National Park. In the midst of a glacier canyon, he makes a loud holler. He hears an echo 1.22 seconds later. How far away are the canyon walls
A 5.0micrometer strand of DNA carries +e charge per nm of length. Treating it as a charged line, what's the electric field strength 28 nanometer from the DNA, not near either end
The number of errors needing correction on each page of a set of proofs follows a Poisson distribution of mean μ . The cost of the first correction on any page is α and that of each subsequent correction on the same page is β .
A long, straight, current-carrying wire runs from north to south. A compass needle placed above the wire points by its N-pole toward the east. In what direction is the current flowing? If a compass is put underneath the wire, in which direction will ..
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