Gold is sold by the troy ounce (31.103 g). What is the volume of 1 troy ounce of pure gold?

Gold is sold by the troy ounce (31.103 g). What is the volume of 1 troy ounce of pure gold?

Simplify the rational expression, If possible.

$$4x^2$$

/

$$20x^2-12x$$

The Huka Falls on the Waikato River is one of New Zealand's most visited natural tourist attractions . On average the river has a flow rate of about 300,000 L/s. At the gorge, the river narrows to 20 m wide and averages 20 m deep. What is the average speed of the water in the river downstream of the falls when it widens to 60 m and its depth increases to an average of 40 m?

(a) What is the pressure drop due to the Bernoulli effect as water goes into a 3.00-cm-diameter nozzle from a 9.00-cm-diameter fire hose while carrying a flow of 40.0 L/s? (b) To what maximum height above the nozzle can this water rise? (The actual height will be significantly smaller due to air resistance.)

The Huka Falls on the Waikato River is one of New Zealand’s most visited natural tourist attractions. On average the river has a flow rate of about 300,000 L/s. At the gorge, the river narrows to 20 m wide and averages 20 m deep. (a) What is the average speed of the river in the gorge? (b) What is the average speed of the water in the river downstream of the falls when it widens to 60 m and its depth increases to an average of 40 m?

Calculate the approximate force on a square meter of sail, given the horizontal velocity of the wind is 6.00 m/s parallel to its front surface and 3.50 m/s along its back surface. Take the density of air to be $1.29 \mathrm{~kg} / \mathrm{m}^3$. (The calculation, based on Bernoulli's principle, is approximate due to the effects of turbulence.)

The Huka Falls on the Waikato River is one of New Zealand's most visited natural tourist attractions . On average the river has a flow rate of about 300,000 L/s. At the gorge, the river narrows to 20 m wide and averages 20 m deep. What is the average speed of the river in the gorge?

Gold, which has a density of 19.32 g/cm$^3$, is the most ductile metal and can be pressed into a thin leaf or drawn out into a long fiber. If a sample of gold, with a mass of 27.63 g, is pressed into a leaf of 1.000 $\mu$m thickness, what is the area of the leaf?

What is the mass of a deep breath of air having a volume of 2.00 L? Discuss the effect taking such a breath has on your body's volume and density.

What is the pressure drop due to the Bernoulli Effect as water goes into a 3.00-cm-diameter nozzle from a 9.00-cm-diameter fire hose while carrying a flow of 40.0 L/s? (b) To what maximum height above the nozzle can this water rise? (The actual height will be significantly smaller due to air resistance.)

The greatest ocean depths on Earth are found in the Marianas Trench near the Philippines. Calculate the pressure due to the ocean at the bottom of this trench, given its depth is 11.0 km and assuming the density of seawater is constant all the way down.

Name the following compounds and assign oxidation states to the halogens in them: $AlCl_3$

Determine whether the statement is true or false. Explain your answer. An integrand involving a radical of the form

$$\sqrt { x ^ { 2 } - a ^ { 2 } }$$

suggests the substitution x=a cos

$$\theta$$

.