Physics for Scientists and Engineers: Foundations and Connections
1st Edition
ISBN: 9781133939146
Author: Katz, Debora M.
Publisher: Cengage Learning
expand_more
expand_more
format_list_bulleted
Question
Chapter 10, Problem 16PQ
(a)
To determine
The average of the student’s positions.
(b)
To determine
The weighted average of the student’s positions based on their grades.
Expert Solution & Answer
Want to see the full answer?
Check out a sample textbook solutionStudents have asked these similar questions
Cedar has been trying to get Liam's attention for weeks. He decides to make a paper airplane to hit Liam in the back of his head (and grab his attention). If the paper airplane flies 2.64 m [W 26˚ N] and then is caught by the wind, which causes it to travel 3.21 m [S 12˚ E]. What is the paper airplane's total displacement? (please hand-write it and make it clear)
1. What does the rate of change of linear momentum of a system represent?
a. The mechanical energy of the system.
b. The net external force acting on the system.
c. The kinetic energy of the system.
d. The acceleration of the system.
2. What physical quantities are conserved during an elastic collision?
a. Linear momentum
b. Mass
c. Kinetic energy
d. All the answers are correct.
An atomic nucleus at rest at the origin of an xy coordinate system transforms into three particles. Particle 1, mass 16.7 x 10–27 kg, moves away from the origin at velocity (7.20 x 106 m/s)î; particle 2, mass 8.35 x 10–27 kg, moves away at velocity (–8.40 x 106 m/s)ĵ. (a) In unit-vector notation, what is the linear momentum of the third particle, mass 11.7 x 10–27 kg? (b) How much kinetic energy appears in this transformation?
Chapter 10 Solutions
Physics for Scientists and Engineers: Foundations and Connections
Ch. 10.1 - What Do You Already Know About Rockets? Think...Ch. 10.3 - Prob. 10.2CECh. 10.3 - Prob. 10.3CECh. 10.3 - Prob. 10.4CECh. 10.5 - What is the purpose of the ropes attached to the...Ch. 10 - Prob. 1PQCh. 10 - Prob. 2PQCh. 10 - Prob. 3PQCh. 10 - A mother pushes her son in a stroller at a...Ch. 10 - Prob. 5PQ
Ch. 10 - Estimate the magnitude of the momentum of a car on...Ch. 10 - Prob. 7PQCh. 10 - Prob. 8PQCh. 10 - What is the magnitude of the Earths momentum...Ch. 10 - The velocity of a 10-kg object is given by...Ch. 10 - A particle has a momentum of magnitude 40.0 kg ...Ch. 10 - Prob. 12PQCh. 10 - Latoya, sitting on a sled, is being pushed by...Ch. 10 - A baseball is thrown vertically upward. The mass...Ch. 10 - Center of Mass Revisited N Find the center of mass...Ch. 10 - Prob. 16PQCh. 10 - Prob. 17PQCh. 10 - Two metersticks are connected at their ends as...Ch. 10 - A boy of mass 25.0 kg is sitting on one side of a...Ch. 10 - Prob. 20PQCh. 10 - Prob. 21PQCh. 10 - Prob. 22PQCh. 10 - Prob. 23PQCh. 10 - Prob. 24PQCh. 10 - Prob. 25PQCh. 10 - A person of mass m stands on a rope ladder that is...Ch. 10 - Prob. 27PQCh. 10 - Prob. 28PQCh. 10 - Two particles with masses 2.0 kg and 4.0 kg are...Ch. 10 - A billiard player sends the cue ball toward a...Ch. 10 - A crate of mass M is initially at rest on a...Ch. 10 - Prob. 32PQCh. 10 - Prob. 33PQCh. 10 - According to the National Academy of Sciences, the...Ch. 10 - Prob. 35PQCh. 10 - Prob. 36PQCh. 10 - Prob. 37PQCh. 10 - Usually, we do not walk or even stand on a...Ch. 10 - Prob. 39PQCh. 10 - There is a compressed spring between two...Ch. 10 - There is a compressed spring between two...Ch. 10 - A submarine with a mass of 6.26 106 kg contains a...Ch. 10 - A 44.0-kg child finds himself trapped on the...Ch. 10 - Problems 44 and 45 are paired. C A model rocket is...Ch. 10 - A model rocket is shot straight up and explodes at...Ch. 10 - An astronaut finds herself in a predicament in...Ch. 10 - Prob. 47PQCh. 10 - Prob. 48PQCh. 10 - Prob. 49PQCh. 10 - Prob. 50PQCh. 10 - The space shuttle uses its thrusters with an...Ch. 10 - Prob. 52PQCh. 10 - Prob. 53PQCh. 10 - Prob. 54PQCh. 10 - Prob. 55PQCh. 10 - The cryogenic main stage of a rocket has an...Ch. 10 - To lift off from the Moon, a 9.50 105 kg rocket...Ch. 10 - Prob. 58PQCh. 10 - Prob. 59PQCh. 10 - Prob. 60PQCh. 10 - Prob. 61PQCh. 10 - An astronaut out on a spacewalk to construct a new...Ch. 10 - Prob. 63PQCh. 10 - Prob. 64PQCh. 10 - A racquetball of mass m = 43.0 g, initially moving...Ch. 10 - Prob. 66PQCh. 10 - Prob. 67PQCh. 10 - Prob. 68PQCh. 10 - A comet is traveling through space with speed 3.33...Ch. 10 - A ballistic pendulum is used to measure the speed...Ch. 10 - Prob. 71PQCh. 10 - Prob. 72PQCh. 10 - Prob. 73PQCh. 10 - Figure P10.74 provides artists with human...Ch. 10 - Prob. 75PQCh. 10 - A single-stage rocket of mass 308 metric tons (not...Ch. 10 - Prob. 77PQCh. 10 - A light spring is attached to a block of mass 4m...Ch. 10 - Prob. 79PQCh. 10 - Prob. 80PQCh. 10 - A Show that the total momentum of a system of...Ch. 10 - Prob. 82PQCh. 10 - Prob. 83PQ
Knowledge Booster
Learn more about
Need a deep-dive on the concept behind this application? Look no further. Learn more about this topic, physics and related others by exploring similar questions and additional content below.Similar questions
- A particle has a momentum of magnitude 40.0 kg m/s and a kinetic energy of 3.40 102 J. a. What is the mass of the particle? b. What is the speed of the particle?arrow_forwardGiven a vector A=4.5+4.5j and a vector B=4.5+4.5j, determine the magnitude of the cross product of these two vectors, AB. Hint: Make a sketch of both vectors including a coordinate system.arrow_forwardIn an attempt to produce exotic new particles, a proton of mass mp = 1.67 1027 kg is accelerated to 0.99c (c = 3.00 108 m/s is the speed of light) and crashed into a helium nucleus of mass mHe = 6.64 1027 kg initially at rest. The collision is elastic. a. What is the kinetic energy of the helium nucleus after the collision? b. What is the kinetic energy of the proton after the collision? (In Chapter 39, well learn what Einstein says about making such calculations.)arrow_forward
- A model rocket is shot straight up and explodes at the top of its trajectory into three pieces as viewed from above and shown in Figure P10.44. The masses of the three pieces are mA = 100.0 g, mB = 20.0 g, and mC = 30.0 g. Immediately after the explosion, piece A is traveling at 1.50 m/s, and piece B is traveling at 7.00 m/s in a direction 30 below the negative x axis as shown. What is the velocity of piece C? FIGURE P10.44 Problems 44 and 45. 45. We can use the conservation of momentum (Eq. 10.9). The total initial momentum is zero, so the sum of all the final momenta should be zero. mAvAf+mBvBf+mCvCf=0 This velocities for A and B can be expressed as vectors. vAf=1.50jm/svBf=(7.00im/s)cos30(7.00jm/s)sin30=(6.06i3.50j)m/s We can now solve the momentum equation. (100.0g)(1.50jm/s)+(20.0g)(6.06i3.50j)m/s+(30.0g)vCf=0vCf=(4.04i2.67j)m/s The velocity of piece C is down and to the right as expected.arrow_forwardA 64.5 kgkg astronaut is doing a repair in space on the orbiting space station. She throws a 2.35 kgkg tool away from her at 3.60 m/sm/s relative to the space station. With what speed will she begin to move? Express your answer with the appropriate units. n what direction will she begin to move? In what direction will she begin to move? She moves in the direction in which she throws the tool. She moves opposite to the direction in which she throws the tool.arrow_forward(a) As shown three points in the operation of the ballistic pendulum (and shown in 9.10b). The projectile approaches the pendulum in 9.36a. 9.36b shows the situation just after the projectile is captured in the pendulum. In 9.36c, the pendulum arm has swung upward and come to rest momentarily at a height h above its initial position. Prove that the ratio of the kinetic energy of the projectile–pendulum system immediately after the collision to the kinetic energy immediately before is m1/(m1 + m2). (b) What is the ratio of the momentum of the system immediately after the collision to the momentum immediately before? (c) A student believes that such a large decrease in mechanical energy must be accompanied by at least a small decrease in momentum. How would you convince this student of the truth?arrow_forward
- A child of mass 30kg swings at the end of an elastic cord. At the bottom of the swing, the child's velocity is horizontal, and the speed is 9.8m/s. At this instant, the cord is 5.85m long. A) at this instant what is the magnitude of the rate of change of the child's momentum? B) at this instant what is the net force acting on the child? C) what is the magnitude of the force that the elastic cord exerts on the child? D) the relaxed length of the elastic cord is 5.78m. What is the stiffness of the cord?arrow_forwardA bowling ball of mass mb = 4.3 kg is rolled down the lane with a velocity of v1 = 2.1 m/s. It strikes a single remaining pin mp = 0.85 kg head on. After the collision the bowling ball has a velocity (in the same direction) of v2 = 1.8 m/s. Part (a) Write an expression for the velocity of pin in the horizontal direction after the impact, vp. Part (b) What is the pins speed in m/s? Part (c) Assuming the coefficient of friction is μk = 0.1, how far in meters could the pin slide before stopping if it doesn't topple?arrow_forwardQuestion 4: a. The position of a moving particle in vortex is expressed as, x(t) = x0 sin(a√t +bt2) where x0 is the position at t = 0, x (t) is the position at time t, and a and b are the constants. Using dimensionalanalysis find the units of the constants a and b? b. A particle is moving along the x axis, and the graph shows its momentum p as a function of time t.Rank (largest to smallest) the regions according to the magnitude of the impulse applied to theparticle.arrow_forward
- On a horizontal frictionless table, a 3-kg block moving 5 m/s to the right collides with an 8-kg block moving 1.5 m/s to the left. a. If the two blocks stick together, what is the final velocity (magnitude and direction)? b. How much mechanical energy is dissipated in the collision? (full solution)arrow_forwardA spring-loaded toy gun is aimed vertically and fired after a spherical projectile of mass m = 30.0 g is loaded by compressing the spring with force constant k = 825 N/m a distance of 9.00 cm. As the projectile travels a total distance of 59.0 cm along the barrel of the gun, it experiences a friction force of 1.75 N. What is the height reached by the projectile above its initial location with the spring compressed?arrow_forwardConsider the Earth and the Moon as a two-particle system. a. Find an expression for the gravitational field g of this two-particle system as a function of the distance r from the center of the Earth. (Do not worry about points inside either the Earth or the Moon.) b. Plot the scalar component of g as a function of distance from the center of the Earth.arrow_forward
arrow_back_ios
SEE MORE QUESTIONS
arrow_forward_ios
Recommended textbooks for you
- Physics for Scientists and Engineers: Foundations...PhysicsISBN:9781133939146Author:Katz, Debora M.Publisher:Cengage Learning
Physics for Scientists and Engineers: Foundations...
Physics
ISBN:9781133939146
Author:Katz, Debora M.
Publisher:Cengage Learning
Impulse Derivation and Demonstration; Author: Flipping Physics;https://www.youtube.com/watch?v=9rwkTnTOB0s;License: Standard YouTube License, CC-BY