Masteringphysics With Pearson Etext - Valuepack Access Card - For College Physics
10th Edition
ISBN: 9780321976932
Author: YOUNG
Publisher: PEARSON
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Chapter 1, Problem 21P
Estimate the total mass of all the humans presently living on earth.
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4B. Four electrons are located on the corners of a square, one on each corner, with the sides of the square being 25 cm long. a) Draw a sketch of the scenario and use your sketch to b) Determine the total force (magnitude and direction) on one of the electrons from the other three?
Portfolio Problem 3. A ball is thrown vertically upwards with a speed vo
from the floor of a room of height h. It hits the ceiling and then returns to the
floor, from which it rebounds, managing just to hit the ceiling a second time.
Assume that the coefficient of restitution between the ball and the floor, e, is
equal to that between the ball and the ceiling. Compute e.
Portfolio Problem 4. Consider two identical springs, each with natural length
and spring constant k, attached to a horizontal frame at distance 2l apart. Their
free ends are attached to the same particle of mass m, which is hanging under
gravity. Let z denote the vertical displacement of the particle from the hori-
zontal frame, so that z < 0 when the particle is below the frame, as shown in
the figure. The particle has zero horizontal velocity, so that the motion is one
dimensional along z.
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(a) Show that the total force acting on the particle is
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(b) Find the potential energy U(x, y, z) of the system such that U
x = : 0.
= O when
(c) The particle is pulled down until the springs are each of length 3l, and then
released. Find the velocity of the particle when it crosses z = 0.
Chapter 1 Solutions
Masteringphysics With Pearson Etext - Valuepack Access Card - For College Physics
Ch. 1 - A guidebook describes the rate of climb of a...Ch. 1 - Suppose you are asked to compute the cosine of 3...Ch. 1 - Which of the following is a reasonable height for...Ch. 1 - Which of the following is a reasonable age for an...Ch. 1 - Which of the following is a reasonable mass for an...Ch. 1 - Atomic quantities are now used to define the...Ch. 1 - Suppose you ask your lab partner to look up the...Ch. 1 - (a) The mass m of an object is proportional to its...Ch. 1 - Based only on consistency of units, which of the...Ch. 1 - Based only on consistency of units, which of the...
Ch. 1 - (a) In adding scalars, is 1 m + 1 n necessarily...Ch. 1 - Is it possible for the magnitude of a vector (a)...Ch. 1 - (a) Does it make sense to say that a vector is...Ch. 1 - The three vectors A, B, and C are shown in Figure...Ch. 1 - A world-class term s player can serve a tennis...Ch. 1 - Suppose that bacon is sold for 2 per pound. If you...Ch. 1 - A vector is directed at an angle above the +x...Ch. 1 - A mass of 1.0 103 kg is the same as A. 1012 g. B....Ch. 1 - If the vector B has a magnitude of 25 m and makes...Ch. 1 - If vector A has components Ax and Ay and makes an...Ch. 1 - If the distance d (in meters) traveled by an...Ch. 1 - The speed of a sound wave traveling in a medium...Ch. 1 - If vector A has unity magnitude and makes an angle...Ch. 1 - If vector A has components Ax = 3 and Ay = 4, then...Ch. 1 - (a) How many ohms are there in a 7.85 megohm...Ch. 1 - (a) The recommended daily allowance (RDA) of the...Ch. 1 - (a) Starting with the definition 1.00 ln. = 2.54...Ch. 1 - (a) The density (mass divided by volume) of water...Ch. 1 - Calculate the earths speed in its orbit around the...Ch. 1 - How many nanoseconds does it take light to travel...Ch. 1 - Gasoline mileage. You are considering buying a...Ch. 1 - While driving in an exotic foreign land, you see a...Ch. 1 - Filler up! you fill up your gas tank in Europe...Ch. 1 - Bacteria. Bacteria vary somewhat In size, but a...Ch. 1 - Compute the number of seconds in (a) an hour, (b)...Ch. 1 - Some commonly occurring quantities. All of the...Ch. 1 - Express each of the following numbers to three,...Ch. 1 - Express each of the following approximations of ...Ch. 1 - Blood is thicker than water. The density (mass...Ch. 1 - White dwarfs and neutron stars. Recall that...Ch. 1 - Atoms and nuclei. The atom helium (He) consists of...Ch. 1 - The density of aluminum is 2.7 g/cm3. What Is the...Ch. 1 - Cell walls. Although these quantities vary from...Ch. 1 - A brass washer has an outside diameter of 4.50 cm...Ch. 1 - Estimate the total mass of all the humans...Ch. 1 - A stack of printer paper is 2 inches thick and...Ch. 1 - How many cells in the body? Although their sizes...Ch. 1 - How many times does a typical person blink her...Ch. 1 - You are using water to dilute small amounts of...Ch. 1 - How many dollar bills would you have to stack to...Ch. 1 - Space station. You are designing a space station...Ch. 1 - A beating heart. How many times does a human heart...Ch. 1 - How long would it take you to walk to the moon,...Ch. 1 - Estimate the value of your weight in gold. What...Ch. 1 - On a single diagram, carefully sketch each force...Ch. 1 - Hearing rattles from a snake, you make two rapid...Ch. 1 - A ladybug starts at the center of a 12-in...Ch. 1 - For the vectors A and B shown in Figure 1.24,...Ch. 1 - Consider the force vectors A and B shown in Figure...Ch. 1 - A rocket fires two engines simultaneously. One...Ch. 1 - In each of the cases that follow, the magnitude of...Ch. 1 - In each of the cases that follow, the components...Ch. 1 - A woman takes her dog Rover for a walk on a leash....Ch. 1 - If a vector A has the following components, use...Ch. 1 - Compute the x and y components of the vectors...Ch. 1 - Vector A has components Ax = 1 30 cm, Ay = 2.25...Ch. 1 - A plane leaves Seattle, flies 85 mi at 22 north of...Ch. 1 - Vector A has a magnitude of 20 m arc makes an...Ch. 1 - Three horizontal ropes are attached to a boulder...Ch. 1 - A disoriented physics professor drives 3.25 km...Ch. 1 - A postal employee drives a delivery truck along...Ch. 1 - Baseball mass. Basebal rules specify that a...Ch. 1 - Velocity vector A has components Ax = 3 m/s and Ay...Ch. 1 - How much blood In a heartbeat? A Typical human...Ch. 1 - Muscle attachment. When muscles attach to cones,...Ch. 1 - A woman starts from her house and begins jogging...Ch. 1 - While surveying a cave, a spelunker follows a...Ch. 1 - A sailor in a small sailboat encounters shifting...Ch. 1 - Dislocated shoulder. A patient with a dislocated...Ch. 1 - On a training flight, a student pilot flies from...Ch. 1 - Calculating Lung Volume in Humans. In human lungs,...Ch. 1 - Assuming that alveoli are spherical, what is the...Ch. 1 - Individuals vary considerably in total lung...
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