Why do short dogs (like Chihuahuas) walk with quicker strides than do tall dogs (like Great Danes)?
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Why do short dogs (like Chihuahuas) walk with quicker strides
than do tall dogs (like Great Danes)?
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- A car with a mass of 1500 kg speeds up from 12 m/s to 13 m/s. For this process, calculate the associated change in kinetic energy, AKE, paying attention to units. (Note that 1 J = 1 kg m^2/s^2.) 1.5 kJ 18.75 kJ 37.5 kJ 19.5 kJ 14.7 kJ 0.75 kJA force of 1 pounds is required to hold a spring stretched 0.2 feet beyond its natural length. How much work (in foot- pounds) is done in stretching the spring from its natural length to 0.6 feet beyond its natural length?(a) A bathroom scale has a spring that is compressed by 1.50 cm when a 150 kg person stands on the scale. Assuming the spring is described by Hooke's law, find its force constant (in N/m). ______N/m (b) How much (in mm) would it be compressed if a 95.0 kg person stands on the scale in an elevator that is accelerating upward at 1.25 m/s²?______mm
- The transition probability between two oscillator states m and n depends on xe³H„(x)Hm(x)dx. Show that this integral equals r/22"-!n! 8m.n=1+7/2" (n + 1)! Bm.n+1- This result shows that such transitions can occur only between states of adjacent energy levels, m =n+1.A lab assistant has suspended a spring from a door frame. When an object is attached to the spring's bottom end, the spring extends downward by an additional distance, d, measuring 4.80 cm. (That downward distance is relative to the unstretched position that the spring had previously held when in equilibrium, as shown by the horizontal dashed line in the figure below). Calculate the mass of the hanging object (in kg) if the spring constant k has the value 59.5 N/m. 1. kgLook at attachments please! Help! The value of the spring constant k is approximately