In the following equation, which describes the fission of uranium, what do i, ii, and iii represent? $\mathrm{i}+^{235} \mathrm{Uranium} \rightarrow \mathrm{ii}+^{91} \mathrm{Krypton}+\mathrm{iii}$ (a) 1 neutron, $^{142} \mathrm{Boron}$, heat energy, (b) 1 neutron, $^{142} \mathrm{Barium}$, $^{135} \mathrm{Cesium}$, (c) 1 neutron, $^{142} \mathrm{Barium}$, kinetic energy, (d) Kinetic energy, $^{142} \mathrm{Boron}$, potential energy, (e) Potential energy, $^{142} \mathrm{Barium}$, kinetic energy.

To produce 10,000 kg of cattle, a farmer uses 50 acres of corn as cattle feed. If a single acre produces 4,000 kg of corn, what is the energy subsidy of beef? Assume mass can be used as a substitute for energy. (a) 0.4, (b) 2.5, (c) 20, (d) 80, (e) 200.

The Dead Sea, which lies on the border between Jordan and Israel, is one of the saltiest lakes on Earth. Suppose you are a geologist exploring the area. What geological factors would you expect to see that might explain this salinity? I. High concentrations of uranium in or around the Dead Sea. II. Lack of outlets for water to escape, III. Relatively impermeable soil at the bottom of the lake. (a) I only, (b) II only, (c) III only, (d) I and II, (e) II and III.

What are some obstacles to sympatric speciation?

Solve equation $\dfrac{m}{6}=1$ and check your answer.

Which is NOT true regarding keystone species? (a) Keystone species can be mutualists with other species. (b) Keystone species are often rare individuals in a community. (c) Keystone species are most likely to be commensalists. (d) Keystone species can be highly lethal to several species in a community. (e) Keystone species may interact with only a single other species.

Which of the following is NOT true regarding an El Nino-Southern Oscillation (ENSO) event? (a) An ENSO event relies on thermohaline circulation. (b) An ENSO event brings warmer air temperatures to South America. (c) Glacial melting could eliminate thermohaline circulation. (d) An ENSO event typically starts around Christmas. (e) ENSO events are driven by a reversal of trade winds.

In how many ways can a president, a vice-president, and a secretary be selected from an organization of 32 members?

Tuan is an artist. He is painting on a large canvas that is 45 inches wide. The height of the canvas is 9 inches less than the width. What is the area of Tuan's canvas?

A 15-m-long garden hose has an inner diameter of 2.5 cm. One end is connected to a spigot; $20 ^ { \circ } \mathrm { C }$ water flows from the other end at a rate of 1.2 L/s. What is the gauge pressure at the spigot end of the hose? A. 1900 Pa B. 2700 Pa C. 4200 Pa D. 5800 Pa E. 7300 Pa

You have installed a solar-charged battery that can provide 4 MJ of electrical energy each day. Approximately how many 50 W bulbs can you run on the battery if each bulb is on for an average of 1 hour per day? (a) 3, (b) 10, (c) 22, (d) 32, (e) 45.

(a) Determine the radius of the smallest cation that can have (i) sixfold and (ii) eightfold coordination with the $\mathrm{Cl}^{-}$ ion (radius 181 pm). (b) Determine the radius of the smallest anion that can have (i) sixfold and (ii) eightfold coordination with the $\mathrm{Rb}^{+}$ ion (radius 149 pm).

Consider this geometric sequence: $3,6,12,24,48, \ldots$ a. What is the common ratio r? b. Call the general term of this sequence $A_{n}$. Suppose that the starting subscript for the sequence is 0. Thus, the initial term is $A_{0}=3$. What is a recursive formula for this sequence? What is a function formula for this sequence? Write both formulas in the form $"A_{n}=\ldots,$") c. Suppose the starting subscript is 1. Thus, $A_{1}=3$. What is a recursive formula for the sequence in this case? What is a function formula? (Write both formulas in the form $"A_{n}=\ldots$." d. Compare the formulas in Parts b and c. Explain similarities and differences.

Find each root that is a real number. $-\sqrt[4]{256}$