How many times does a human heart beat during a person’s lifetime? How many gallons of blood does it pump? (Estimate that the heart pumps 50 cm3 of blood with each beat.)

Q: How many heartbeats are there in a lifetime?

A: Consider that the average lifetime of the human is 75 years.

Q: A sphere of radius r has surface area A = 4πr2 and volumeV = (4/3)πr3. If the radius of sphere 2 is…

A: a)The ratio of the areas, A2/A1

Q: In addition to 1 m = 39.37 in., the following exact conversion equivalents are given: 1 mile = 5280…

A:

Q: 10. Rohith has been jogging to the bus stop for 2.0 m this 10.0 s? 10 cm/y to 0.5 cm/y over

A:

Q: Assuming biological substances are 100% water, estimate the mass of a human kidney. Take a kidney to…

A: Mass of a Human kidney

Q: Express the following sum with the correct number of significant figures: 1.80 m + 142.5 cm + 5.34 *…

A:

Q: What is the value of Xc (in centimeters) if R is 15cm?

A: Given,Radius of the quater plate, R = 15 cm

Q: How many significant figures does  1.362+25.2 have ? (a) 2.             (b) 3.              (c) 4.…

A:

Q: The result of (20.20 + 0.010)(11.20 – 6.200) is in Newtons (N). If 20.20 is in meters (m), what are…

A: Given: unit of 20.20 is meter and unit of (20.20+0.010)*(11.20-6.200) is N

Q: Express the following sum with the correct number of significant figures: 1.80 mm + 171.5 cm +…

A: Here, the sum is

Q: Compute the following numbers to three significant figures.a. 33.3 x 25.4                 b. 33.3 -…

A:

Q: convert a speed of 4.50km / h to units of ft / min (1.00 m = 3.28ft)

A: Units And Dimensions

Q: QUESTION 7 *,=x,+v+ 2 x,= 66.6 m "f V= 5.09 m/s t= 9.02 s a = 1.13 m/s2 x,= ? in m Input answer…

A: Part (7): Given: The final position of the object is xf = 66.6 m. The initial velocity is vix = 5.09…

Q: Why is it km and not meters, if c = 3x10^8 m and G has meter in the constant

A:

Q: One student uses a meterstick to measure the thickness of a textbook and obtains 4.3 cm + 0.1 cm.…

A:

Q: In a situation in which data are known to three significant digits, we write 6.379 m = 6.38 m and…

A: Logarithmic scale is used to find the order of magnitude.

Q: 1). Density describes a. mass per unit volume. b. length per unit time. C. volume per liter. d.…

A:

Q: The mass of the cube is 12 grams. Calculate the density of the cube using the length measurement…

A: Given data: Mass of the cube, m=12 g Measurements of the cube:  l=1.05 mm=0.105 cmb=1.25 mm=0.125…

Q: A typical person has an average heart rate of 68.0 beats/min. Pay close attention to significant…

A:

Q: You want to calculate the area of your dorm room which is in a rectangular shape. You measure the…

A: Measurement is the process of determining a number that represents the quantity of something. The…

Q: Vesna Vulovic survived the longest fall on record without a parachute when her plane exploded and…

A: Distance , d = 5 mines and 130 yards  To find = distance in meters

Q: QUESTION 2 Match units with physical quantities. m = meter kg = kilo gram s= second Mass (M) v…

A: We know, S.I. unit of mass (M) is kilogram (kg) S.I. unit of length (or distance, L) is meter (m)…

Q: A traditional unit of length in Japan is the ken (1 ken  1.97 m).What are the ratios of (a) square…

A: The unit length in ken,   The ratio of the square kens to square meters,

Q: American football is played on a 100-yd-long field, excluding the end zones. How long is the field…

A:

Q: How many significant figures are there in (a) 78.9 ± 0.2, (b) 3.788 × 10

A: Significant figures shows that the figures which gave the accuracy in the measurement.

Q: density of a rod of length 4 m is given by p(x) = 8 + 2x measured in kilograms per meter, where x is…

A: Linear density = mass/ total length = m/L

Q: A can of tomatoes has a radius of 6 cm and a height of 10 cm. What is the approximate volume of the…

A:

Q: A study finds that the metabolic rate of mammals is proportional to m3/4, where m is the total body…

A:

Q: What is the height in meters of a 5 foot 6.0 inch tall person? m

A: given that,h=5 foot 6 inchconvert h in meters

Q: If In(x) 3.37, what is the value of x?

A: According to question we need to find value of x.

Q: In science, the explanation of a phenomenon is acic

A: the study of and knowledge about the physical world and natural laws

Q: If Vx = 7.90 units and Vy = -6.20 units, determine (a)the magnitude and (b)direction of V⃗

A: Consider the situation in the diagram below.

Q: You take your pulse and observe 74 heartbeats in a minute. Whatare the period and frequency of your…

A: Given: The number of beats per minute is 74.

Q: Using dimensional analysis, check which of the following equations is or are correct. 1. a=v/t 2.…

A: Given  1. a=v/t 2. density = mass/volume 3. speed = d/t^2  4. a=∆v/∆t

Q: Express the following sum with the correct number of significant figures: 1.80 mm + 162.5 cm +…

A: In addition and subtraction, the last significant decimal place in the calculated result should be…

Q: What is the Percentage Error of: Tablet length using ruler: 1.) 18 mm 2.) 22.5 mm 3.) 5 mm 4.)…

A: We know that a ruler has increments in units of centimetre (cm). The smallest scale division is a…

Q: A bird can fly 25km/h How long does it take to fly 3.5 km?

A: Speed of the bird,(S)=25 km/hr ----(1) [Given] Distance travel by the bird,(D)=3.5 km ----(2)…

Q: If you tried to smuggle gold bricks by filling your backpack, whose dimensions are 63 cm x 25 cm x…

A:

Q: How many minutes are in 4 weeks? Please show how you got the answer

A: 1 week = 7 days 1 day = 24 hours 1 hour = 60 minutes

Q: A student measures the thickness of a textbook with a meter stick and obtains a value of 3.8 cm ±0.1…

A: Option (b) agree with the value of the first student. i e  3.81 cm ±0.01 cm

Q: Express this product in units of m3 in scientific notation with the appropriate number of…

A: The value is given as (2.90 km) × (350 cm) × (1.005x10-2 mm)

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.