What is the velocity of the shoe just before it hits ground
A parachutist descending at a speed of 13.4 m/s loses a shoe at an altitude of 54.2 m. What is the velocity of the shoe just before it hits the ground? The acceleration of gravity is 9.81 m/s2. Answer in units of m/s.
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Calculate Ecell for the following electrochemical cell at 25 °C Pt(s) | H2(g, 1.00 atm) | H+(aq, 1.00 M) || Pb2+(aq, 0.150 M) | Pb(s) given the following standard reduction potentials.
A 1.630 -,g sample of naphthalene, C10H8(s)is completely burned in a bomb calorimeter assembly and a temperature increase of 8.46 degrees Celsiusis noted. If the heat of combustion of naphthalene is -5156 kj/mol C10C8, what is heat capacity of th
Describe an original classroom instructional activity that will help students learn specific information. (Be sure to provide a short description of the specific information you want students to learn.)& ;
One mole of A and two moles of B are placed in a container. At equilibrium, the density of the gas mixture is 0.312 g/L at 0.2 atm and 500 K. What is the value of Kc in units of (mol/L)?
Wind is included along with gravity, water and ice as an agent of erosion. In many areas of natural beauty, statements are often made that credit wind as having sculpted the landscape.
Which photon has a shortest wavelength when emitted from an atom that transitions from an excited energy to a lower energy?
The total molarity of acid and conjugate base in this buffer is 0.100 M. A student adds 5.70mL of a 0.330M HCl solution to the beaker. How much will the pH change? The pKa of acetic acid is 4.760.
A rifle with a barrel length of 61 cm fires a 8 g bullet with a horizontal speed of 440 m/s . The bullet strikes a block of wood and penetrates to a depth of 15 cm. What resistive force (assumed to be constant) does the wood exert on the bullet?
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