Answer the following question given this paragraph: The energy effects of a wave depend on time as well as amplitude. For example, the longer deep-heat ultrasound is applied, the more energy it transfers. Waves can also be concentrated or spread out. Sunlight, for example, can be focused to burn wood. Earthquakes spread out, so they do less damage the farther they get from the source. In both cases, changing the area the waves cover has important effects. All these pertinent factors are included in the definition of intensity I as power per unit area:. Q: The energy of a wave depends on time as well as what other property of the wave? Choices: - force - power - frequency - amplitude A:
amplitude
(Question)
Answer the following question given this paragraph: Q: What is the smallest unit of matter that still maintains it's properties of being an element? Choices: - a cell - an electron - a proton - an atom A:
(Answer)
an atom
Ques: Answer the following question given this paragraph: In some people, a food allergy can trigger a severe allergic reaction called anaphylaxis. Emergency treatment is critical for anaphylaxis. Untreated, anaphylaxis can cause a coma or death. Anaphylaxis is vary rare. The vast majority of people will never have an anaphylactic reaction. The life-threatening symptoms of anaphylaxis include:. Q: What type of treatment is necessary for anaphylaxis? Choices: - outpatient - allergy shot - intensive care - emergency A:
Ans: emergency
(Q).
Answer the following question given this paragraph: in which C is a constant that depends on the type of crystal structure; Z+ and Z are the charges on the ions; and Ro is the interionic distance (the sum of the radii of the positive and negative ions). Thus, the lattice energy of an ionic crystal increases rapidly as the charges of the ions increase and the sizes of the ions decrease. When all other parameters are kept constant, doubling the charge of both the cation and anion quadruples the lattice energy. For example, the lattice energy of LiF (Z+ and Z = 1) is 1023 kJ/mol, whereas that of MgO (Z+ and Z = 2) is 3900 kJ/ mol (Ro is nearly the sameabout 200 pm for both compounds). Different interatomic distances produce different lattice energies. For example, we can compare the lattice energy of MgF2 (2957 kJ/mol) to that of MgI2 (2327 kJ/mol) to observe the effect on lattice energy of the smaller ionic size of F as compared to I. Q: Different interatomic distances produce different lattice what? Choices: - qualities - surfaces - weights - energies A:
(A).
energies
Ques:Answer the following question given this paragraph: Neural Stimuli In some cases, the nervous system directly stimulates endocrine glands to release hormones, which is referred to as neural stimuli. Recall that in a short-term stress response, the hormones epinephrine and norepinephrine are important for. Q: In some cases, the nervous system directly stimulates endocrine glands to release hormones, which is referred to as what? Choices: - brain stimuli - active stimuli - functional stimuli - neural stimuli A:

Ans:neural stimuli
Ques:Answer the following question given this paragraph: The first horizon is the "A" horizon. It is more commonly called the topsoil . The topsoil is usually the darkest layer of the soil. It is the layer with the most organic material. Humus forms from all the plant and animal debris that falls to or grows on the ground. The topsoil is also the region with the most biological activity. Many organisms live within this layer. Plant roots stretch down into this layer. The roots help to hold the topsoil in place. Topsoil is needed to grow most crops ( Figure below ). Q: What is the "a" horizon commonly known as? Choices: - sediment - core - crust - topsoil A:

Ans:
topsoil