Determine the direction of the resultant acceleration
A 2 000 kg sailboat experiences an eastward force of 3 000 N by the ocean tide and a wind force against its sails with magnitude of 6 000 N directed toward the northwest (45 degrees N of W). What is the direction of the resultant acceleration?
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An arrow is shot at an angle of 45 degrees above the hortizontal. The arrow hits a tree ditance D= 220m away, at the same height aboventhe ground as ut was shot. Use g = 9.8m/s2 for the magnitude of the acceleration due to gravity.
A cluster sample involves selecting:
160 studies are done investigating the relationship between the number of hours per week spent on facebook and specific mental health issues. Assuming a significance level of p=0.05 and that the null hypothesis is actually true, how many of these
Two blocks, joined by a string, have masses of 6.0 kg and 9.0 kg. They rest on a frictionless horizontal surface. A 2nd string, attached only to the 9 kg block, has horizontal force = 30 N applied to it. Both blocks accelerate. Find the tension in
If a reaction is exothermic, predict the effect (shift right, shiftleft, or no effect) of increasing and decreasing the reaction temperature. How does the value of the equilibrium constant depend on temperature?
What is the minimum number of blubs that can be used on the string? What is usually the major frustration of this type of wiring?
Sketch the process on P-v and T-s coordinates. Determine the heat transfer and work, each in kJ per kg of air. Treat air as an ideal gas.
Dimethylhydrazine is a C-H-N compound used in rocket fuels. When burned completely, a 0.312g sample yields 0.458g CO2 and0.374g H2O. The nitrogen content of a 0.486g sample is converted to 0.226g N2. What is the empirical formula of Dimethylhydraz
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