2. If the birth rate was 1.3%, how many individuals were born that year? O2,683,450 O 3,144,591 11,320,505 22,463,682

Q: An altitude of 57,175 feet is equivalent to how many kilometers? (1 in = 2.54 cm exactly)

A: Altitude in Feet 1 in=2.54 cm

Q: Due to global warming, over a 20-year period, many birds have extended the northern margins of their…

A: It is given that the birds had traveled about 12 miles in 20 years. From this, it can be estimated…

Q: How many significant figures are in the number 0.0037010?

A:

Q: Density is always expressed as mass per unit volume. If an organic liquid has a density of 0.9 grams…

A: density of liquid = 0.9 gramscm31 ft3 = 7.481 gallons

Q: If you ran 5,890 meters, how many miles did you run? 1 meter = 3.281 feet 5280 feet = 1 mile

A: The distance traveled by a person is given as, d=5890 m

Q: On a caterpillar map ,all distance are marked in millimeters . The caterpillar map shows that the…

A: Distance between two milkweed plants = 4,012 millimeters  To find : distance between two milkweed…

Q: If 200 oak trees are counted on a 2 km x 2 km patch of land, what is the density of maple trees per…

A:

Q: The mass of an electron is (9.11)(10-31) kilogram, and the mass of a proton is (1.67)(10-27)…

A: Mass of the electron, me=9.11×10-31 kg Mass of the proton, mp=1.67×10-27 kg

Q: How many megahertz is 750 kilohertz?

A:

Q: tourist purchases a car in England and ships it home to the United States. The car sticker…

A: a) We know that the expression to find the used gallons in the US is given as  U= Xr where  U is the…

Q: A particular variety of wood has a density of 0.40 grammes per cubic centimetre. What is the mass in…

A:

Q: Rank the measurements of surface area in order of the number of significant figures, from fewest to…

A:

Q: The area of the 48 contagious states is 3.02 x 106mi2. Assume that these states are completely flat…

A: Area of the states = 3.02 x 106 mi 2 = 7.818 x 1012 m2 Height of rainfall = 2 inch = 0.0508 m

Q: A U.S. Geological Survey map has a scale of 1 inch:24700 inches. If two buildings are 3.93 miles…

A: Given Data, 1 inch on map=24700 inches on the earth

Q: How many more students were enrolled at the University of Michigan in 2000 than in 1900? Answer in…

A: We have the following given data; The number of students were enrolled in 1900 is x1=3.7×103 The…

Q: Compare the following lengths using density calculations. Gold has a density of about 19.3 g/cm3.…

A: Mass = density × volume  M = d× V  V = M/d  L3 = M/d

Q: Convert 74 millimetres (mm) to kilometres (km) Answer: 7.4e-5 Convert 115 cm2 to km2 Answer: 1.15e-8…

A: The conversion of millimeters (mm) into kilometers (km) is determined as 74 mm=74×10-3 m=74×10-3…

Q: The area of a square field is 24,200 sq. m. How long will a lady take to cross the field diagonally…

A: Given: The area of the square field is 24200 m2. The speed of the lady is 6.6 km/h.

Q: Tungsten has a density of 19,300 kg/m³. If you have a cube of tungsten that measures 5 cm on a side,…

A: Given that,A tungsten has a density : ρ=19,300 kg/m3If you have a cube of tungsten that measures on…

Q: What is the size in μm of a cell that is 145mm wide in my photo. The scale bar in the photo is 1.7cm…

A: Scale bar is defined as 1.7 cm  long scale = 12 um 1 cm long scale = 121.7 cm 1 cm long scale = 7.06…

Q: A point-mass of 17 grams at the end of a massless 20 centimeter long string is rotated at a rate of…

A:

Q: A unit called the beard-second is the length the average beard grows in 1 second. A beard-second is…

A: Given 1 beard-second = 10×10-9 m

Q: Find the height or length of these natural wonders in kilometers, meters, and centimeters. (a) a…

A: Given that,for a, length=382 mfor b, l=1222.4 ftfor c, l=22500 ft

Q: A population of insects increases at a rate 240 + 10t + 0.9t² insects per day (t in days). Find the…

A: We are given the rate :-  R = 240 + 10t + 0.9t2  Initial number at t = 0 is 80 We will now…

Q: 15. There are 750 registered voters in one precinct. In a primary election, 64 out of 100 voters…

A: so given that only 64 out of a hundred voter actually voted so the voting in percentage is  64% ( 1%…

Q: A cell biologist measures the width of a cell. The width is 72μm . What is the width in meters?…

A:

Q: magine that one of your relatives has an 84 square meter lot. What is this area in square…

A: 1 m = 100 cm Area of the rectangle is the product of length and width.

Q: A truck's odometer reads 76,493.7 miles at the beginning of a trip and 76,782.6 miles at the end. If…

A: Distance travelled by the truck = final reading -inital reading = 76782.6-76493.7 = 288.9 miles

Q: A generation is about one-third of a lifetime. Approximately how many generations have passed during…

A:

Q: Lying side by side on their backs, how much area would the total human population cover in square…

A: Area covered by one person = 10 ft2 Then area covered by 7.01 billion people:  (7.01×109 )×10…

Q: How many m2 (meters squared) are in 61,042,872 in2 (inches squared) given that 1in = 2.54 cm…

A:

Q: The average density of apple juice is 1.33 g/mL. If 1 bottle of apple juice contains 16 fluid ounces…

A: Density of apple juice = 1.33 g/mL  Volume of one juice bottle = 16 ounces

Q: World is approximately 1.115x109 square kilometers. Convert this to square feet. There are 2.54…

A:

Q: What is the mass of a 1,405-N reptile in kilograms? Your answer should be rounded to the closest…

A:

Q: Suppose you made 5 measures of your walking stride and got the following values: 0.76 m,  0.77 m,…

A:

Q: A square field measuring 100.0 m by 100.0 m has an area of 1.00 hectare. An acre has an area of…

A: Given that, 1 hectare area = 100 × 100 = 10000m2 1 acre area = 43600 ft2  = 43600× ( 0.3048)2  m2  =…

Half Life

The concept of Half Life has numerous practical applications some of them includes figuring out the effective drug dosage to finding out when a radioactive becomes safe to use. If you look for a career in Nuclear Physics you will need this concept.