Concept explainers
Use the orders of magnitude you found in the previous problem to answer the following questions to within an order of magnitude. (a) How many electrons would it take to equal the mass of a proton? (b) How many Earths would it take to equal the mass of the Sun? (c) How many Earth-Moon distances would it take to cover the distance from Earth to the Sun? (d) How many Moon atmospheres would it take to equal the mass of Earth’s atmosphere? (e) How many moons would it take to equal the mass of Earth? (f) How many protons would it take to equal the mass of the Sun?
For the remaining questions, you need to use Figure 1.4 to obtain the necessary orders of magnitude of lengths, masses, and times.
Trending nowThis is a popular solution!
Chapter 1 Solutions
University Physics Volume 1
Additional Science Textbook Solutions
Human Anatomy & Physiology (2nd Edition)
Campbell Biology (11th Edition)
Campbell Biology in Focus (2nd Edition)
Cosmic Perspective Fundamentals
Biology: Life on Earth with Physiology (11th Edition)
Living By Chemistry: First Edition Textbook
- A hot tub with a surface area of 28 ft2 is filled with water to a depth of 29 in . Hint: volume is calculated as area × height (A × h). A) What is the volume of water in the tub, in liters? Express your answer to two significant figures and include the appropriate units. B) How many kilojoules are needed to heat the water from 59∘F to 103 ∘F? Express your answer to two significant figures and include the appropriate units. C) If the hot-tub heater provides 5900 kJ/min, how long, in hours, will it take to heat the water in the hot tub from 59∘F to 103∘F? Express your answer to two significant figures and include the appropriate units.arrow_forwardDensity Here is a simple problem. Then we'll do one that requires a little more thought. The shape of a city is roughly a circle with a radius of 5 miles. If the population density for the city is 10,000 people per square mile, what is the population of the city? 11111 Now here's a problem that will stretch your problem solving skills. This time the city is also in the shape of a circle, but the population density is higher towards the center of the city and lower towards the outskirts. The numbers in the diagram represent miles. The population density is 10,000 people per square mile in the inner circle. In the first ring out from the center the density is 8,000 people per square mile, the second ring out it's 6,000, in the third ring out it's 4,000 and in the largest ring it's only 2,000 people per square mile. Finally, here is a three dimensional problem. Density is defined as weight per unit of volume. So which weighs more, a ball of zinc with a radius of 3 cm, or a ball of…arrow_forwardFor the remaining questions, you need to use Figure 1.4 to obtain the necessary orders of magnitude of lengths, masses, and times.(a) Calculate the number of cells in a hummingbird assuming the mass of an average cell is 10 times the mass of a bacterium. (b) Making the same assumption, how many cells are there in a human?arrow_forward
- Need help pleasearrow_forwardA pendulum is L meters long. The time, t , in seconds that it takes to swing back and forth once is given by =t2L . Suppose the pendulum takes 4.06 seconds to swing back and forth once. What is its length? Carry your intermediate computations to at least four decimal places, and round your answer to the nearest tenth.arrow_forwardWith a wooden ruler, you measure the length of a rectangular piece of sheet metal to be 12 mmmm. With micrometer calipers, you measure the width of the rectangle to be 6.98 mmmm. Give your answers to the following questions using the correct number of significant figures. What is the area of the rectangle? Express your answer in millimeters squared. A=A= ____________ mm2 What is the perimeter of the rectangle? Express your answer in millimeters. P=P= _______________mmarrow_forward
- Assume you have a drop of 2 cm3 falling down. A) If the drop is a cube, what is its surface area? (Hint, volume of a cube = L3. Surface area of a cube=6*L2, where L is the length of the cube, and the factor of 6 as a cube has 6 faces). B) For the same drop, what is its surface area if it is a sphere? (Hint, volume of a sphere=4/3*pi*R3. Surface area of a sphere=4*pi*R2.) C) Find the surface area to volume ratios of both objects. Which object (sphere or cube) has a lower surface area to volume ratio? Which shape does the drop favor?arrow_forwardI need help with knowing what to cirlce. The " increases decreases" part.arrow_forwardA bacteria colony which is unrestricted in its growth will grow out in a circular manner. The population ?(?) of the colony at time t is directly proportional to the area of the circle. Suppose that a particular bacteria grows in such a way that the population is 1.3 times larger each day, and that initially (t=0) the colony has a diameter of 4 centimeter and a population of 7 million. a) Find the Population and Diameter of the colony on the fifth day. b) Find the Rate of Change of the Population and Diameter of the colony on the fifth day. c) Unrestricted growth models are often impractical as values will quickly become unreasonable. On what day does our model predict that the area of the bacteria colony will be 1 square mile?arrow_forward
- At the park there is a pool shaped like a circle. A ring-shaped path goes around the pool. Its inner radius is 10 yd and its outer radius is 14 yd. 10 yd 14 yd We are going to give a new layer of coating to the path. If one gallon of coating can cover 6 yd, how many gallons of coating do we need? Note that coating comes only by the gallon, so the number of gallons must be a whole number. (Use the value 3.14 for a.) I gallons of coatingarrow_forwardhow many inches? it says 1 is wrongarrow_forwardSolve the problem. On a recent trip, Jan travelled 260 miles using 8 gallons of gas. What was the car's miles per gallon for this trip? Kilometers per litre?arrow_forward
- An Introduction to Physical SciencePhysicsISBN:9781305079137Author:James Shipman, Jerry D. Wilson, Charles A. Higgins, Omar TorresPublisher:Cengage Learning