Astronaut picks up a rock
On a planet far, far away, an astronaut picks up a rock. The rock has a mass of 4.80 kg, and on this particular planet its weight is 40.8 N. If the astronaut exerts an upward force of 50.0 on the rock, what is its acceleration?
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A weather balloon is prepared for lift off at the NorthPole. The balloon is filled with 15,000 L of heliumgas. The conditions at the launch site are 760 mm Hg and0*C.
Consider the H atom. Use eV for energies and show your calculation. a.) Calculate the energies of the first four levels of the atom.
Determine T3 in K. - Determine the Power of the exit in the second turbine in kW - Represent those processes in a p-v diagram.
What is the pH of a buffer that is 0.175M in a weak acid and 0.213M in the acid's conjugate base? The acids ionization constant is 5.7 * 10-4.
Describe what happens in the heat-affected zone of the weld and discuss the problems that might occur. Design a joinging process that may minimize these problems.
Determine the natural frequency of oscillation.There is a spring on the right side of the pulley's rope. k=1500N/m Radius of pulley=150mm.
A parallel-plate capacitor has 2.00 cm2 plates that are separated by 6.00 mm with air between them. If a 12.0 V battery is connected to this capacitor, how much energy does it store?
A reaction in solution, A+B-->P, is studied and found to havethe rate law: Rate = k[A] with a rate constant of 3.5 x 10-3 s-1.
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