Correct Answer: D. Tarsus

Correct Answer: B. 3:2

Explanation

Q = MC\(\theta\)

M = \(\frac{Q}{C\theta}\)

\(\frac{Q}{20C}\) : \(\frac{Q}{30C}\)

= 3:2

Correct Answer: C. certificate of origin

Explanation

A certificate of origin is simply a document that states where the product was produced, manufactured, or processed.

Correct Answer: D. generally concentrated at sharply curved surface

Correct Answer: C. boycotted

Explanation

Boycott; refuse to cooperate with or participate in (a policy or event).

Correct Answer: D. demanding the review of an executive action

Correct Answer: C. central government

Explanation

A unitary state is a state governed as a single entity in which the central government is ultimately supreme.

Correct Answer: B. 570mmHg

Explanation

The problem asks for the atmospheric pressure at a height of 20km, given the ground-level pressure and the height at which the atmosphere ceases to exist. The phrase the atmosphere ceases to exist is about 80km implies a simplification where the pressure drops to zero at this height.

We can assume a linear decrease in pressure with altitude for this simplified model.

Given:

• Ground-level pressure (P₀) = 760 mmHg (at h = 0 km)

• Height where atmosphere ceases to exist (H_max) = 80 km (at which point pressure P = 0 mmHg)

• Height at which we need to find the pressure (h) = 20 km

Using a linear model, the pressure P(h) at a height h can be calculated as:

P(h) = P₀ - (P₀ / H_max) * h

Substitute the given values into the equation:

P(20km) = 760 mmHg - (760 mmHg / 80 km) * 20 km

First, calculate the rate of pressure drop:

Rate of drop = 760 mmHg / 80 km = 9.5 mmHg/km

Now, calculate the pressure drop at 20 km:

Pressure drop = (9.5 mmHg/km) * 20 km = 190 mmHg

Finally, subtract the pressure drop from the ground-level pressure:

P(20km) = 760 mmHg - 190 mmHg

P(20km) = 570 mmHg

This value matches option B.

It's important to note that a linear model is a simplification. In reality, atmospheric pressure decreases exponentially with altitude. However, given the phrasing of the question and the multiple-choice options, a linear approximation is the intended method for this problem.

The final answer is 570mmHg.

Correct Answer: A. containing the maximum output from available resources at the lowest possible cost

Correct Answer: B. founded and funded

Explanation

The correct answer is B. founded and funded.

Here's why:

• Founded: This is the past tense of to found, which means to establish or create something (like an institution, city, or organization). A pioneer would establish an institution.

• Funded: This is the past tense of to fund, which means to provide money for something. The phrase from his own resources clearly indicates that he provided the money.

Let's look at the other options:

• A. found and funded: Found (past tense of find) means to discover something that already exists. This doesn't fit the idea of a pioneer creating an institution.

• C. was finding and founding: This is the past continuous tense, implying an ongoing action. While founding takes time, the sentence suggests a completed achievement. Also, finding still has the same issue as in A.

• D. had found and funded: This is the past perfect tense, used for an action that happened before another past action. There's no other past action specified here. Also, found is still incorrect.