A lens (f-number) has following measurements: diameter is 5.4 cm and focal length is 17.6 cm. Determine the speed of the lens.6.326.233.262.63

The second one

At constant pressure, density of gas is inversely proportional to its temperature. This is how hot air balloon is floating in air: burning fuel makes inside air temperature higher and density lower; low density air balloon float on high density regular air. What is the density of air in g/L at 66 degree C if the atmospheric pressure is 1.0 atm? The average molar mass of air is about 29 g/mol. Keep two decimal places for your answer.

A lens (f-number) has following measurements: diameter is 5.4 cm and focal length is 17.6 cm. Determine the speed of the lens. (А) 6.32 (В) 6.23 (C) 2.63 (D) 3.26

help me solve this please

The General Sherman tree, located in Sequoia National Park, is believed to be the most massive of the living things. If the overall density of the tree trunk is assumed to be 850 kg/m³, calculate the mass of the trunk by assuming that it may be approximately by two right conical frustra having lower and upper diameters of 11.2 and 5.6 m, and 5.6 and 3.3 m respectively, and the respective heights of 2.4 and 80.6 m. A frustum is a portion of a cone bounded by two planes, both perpendicular to the axis of the cone.

C-lab Answer the following questions. You may upload a handwritten file if you like, as long as it is legible. Part A: Figure numbers refer to figures in the lab procedures. Do the calculations in the units given. 1. Very briefly explain how a photogate works. 2. How far would you go if you traveled at a speed of 30 miles per hour for 3 hours? 3. What acceleration would be needed to travel the same distance in the same time as in question 2 when starting from rest? What would be your final speed? 4. Refer to Figure 3. Given a track length of 90 cm and a height difference of 18 cm, what is sin 0 5. Draw the force diagram for an object on an inclined plane (see Figure 2 in the lab manual). Attach the diagram in question 2 below. What would be the acceleration given the inclination from question 4 and g = 9.8 m/s? Part B: Attach the free body diagram from question 5 above. O 8:31 acer page up page dn & backspace delete 5 8 enter

Perform a dimensional analysis to indicate which of the two formulas is correct 1) v = at, 2) v = at ^ 2., where v means the speed, and is expressed (L / T), a means acceleration (L / T2) and t is the time (T).

Given the following kinetic parameters, calculate KM. Your numerical answer is assumed to be in units of M. v​0 ​= 2 x 10-​8​ s-​1 ​  Vmax = 1 x 10-​7​ M s-​1​  [S] = 5 mM,

Tab Window Help Learning X ATM HOMEWORK Module 9 X Submit Answer mentid=5735112480241329813180832311&elSBN=9781305862883&id=1707786068&snapshotid=33225... Use the References to access important values if needed for this question. Mind Tap - Cengage Learning X G What volume (in mL) of a 0.125 X ☆ tv References Oxalic acid dihydrate is a solid, diprotic acid that can be used in the laboratory as a primary standard. Its formula is H₂C₂O4 2H₂O. on Using a Primary Standard: This is group attempt 1 of 10 A student dissolves 0.890 grams of H₂C₂04 2H₂O in water and titrates the resulting solution with a solution of sodium hydroxide of unknown concentration. If 35.9 mL of the sodium hydroxide solution are required to neutralize the acid, what is the molarity of the sodium hydroxide solution? Ni ☎ A Autosaved at 10:58 PM Q 9 M A M. *