Determining the force constant of the spring
An elevator car of mass 845 kg falls from rest 3.50 m, hits a buffer spring, and then travels an additional 0.390 m, as it compresses the spring by a maximum of 0.390 m. What is the force constant of the spring?
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What is the diameter of a weather balloon (in meters) filled with He at 15,000 m? On the ground the balloon was filled with He at 18 °C at 0.96 atm to a volume of 7.3 L. At 15,000 m the atmospheric pressure is 10.8 kPa and the temperature is -
Suppose the inspectors sample 100 ravioli. How does the standard deviation of the sampling distribution of the sample mean change?
You wish to electroplate a metal utensil with a surface area of 736 cm2 with gold to give an average thickness of 0.025 mm over the entire surface.
A salesperson at Hydrosubs, Inc., offers to sell you a mini sub that can withstand 1,200 atmospheres of pressure. Will this mini sub work for your expedition?
Liquid water enters a manifold (series of pipes) at 1000 psi and 120 °F with a mass flow rate of 3.0 x 106 lbm/hr and flows through a number of one inch diameter tubes.
What is the vapor pressure over a 30 C water solution containing 652 gram of sucrose (C12H22O11) molecular weight is 342.297 g/mol per liter of solution? Assume the solution behaves ideally. The vapor pressure over pure water at this temperature i
A dipole of moment 0.50 e · nm is placed in a uniform electric field with a magnitude of 1.3 x 105 N/C. What is the magnitude of the torque on the dipole for each of the following situations?
The rate of heat transfer to the air is 347 kJ/kg. Neglecting kinetic and potential energy effects, determine the energy per mass developed in kJ/kg.
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