 7.17Q: Show on a diagram how your CM shifts when you move from a lying pos...
 7.6Q: ?According to Eq. , the longer the impact time of an impulse, the s...
 7.4P: ?(II) A child in a boat throws a package out horizontally with a sp...
 7.42P: Billiard ball A of mass mA = 0.400 kg moving with speed vA = 1.80 m...
 7.5P: Calculate the force exerted on a rocket, given that the propelling ...
 7.6P: A 95kg halfback moving at 4.1 m/s on an apparent breakaway for a t...
 7.7P: A 12,600kg railroad car travels alone on a level frictionless trac...
 7.8P: A 9300kg boxcar traveling at 15.0 m/s strikes a second boxcar at r...
 7.9P: During a Chicago storm, winds can whip horizontally at speeds of 10...
 7.10P: A 3800kg open railroad car coasts along with a constant speed of 8...
 7.10Q: A 3800kg open railroad car coasts along with a constant speed of 8...
 7.11P: An atomic nucleus initially moving at 420 m/s emits an alpha partic...
 7.12P: A 23g bullet traveling 230 m/s penetrates a 2.0kg block of wood a...
 7.13P: A 975kg twostage rocket is traveling at a speed of 5.80 × 103 m/s...
 7.13Q: ?A squash ball hits a wall at a angle as shown in Fig. . What is th...
 7.14P: A rocket of total mass 3180 kg is traveling in outer space with a v...
 7.14Q: A Superball is dropped from a height h onto a hard steel plate (fix...
 7.15P: A golf ball of mass 0.045 kg is hit off the tee at a speed of 45 m/...
 7.16P: A 12kg hammer strikes a nail at a velocity of 8.5 m/s and comes to...
 7.17P: ?(II) A tennis ball of mass and speed strikes a wall at a angle and...
 7.18P: You are the design engineer in charge of the crashworthiness of new...
 7.19P: A 95kg fullback is running at 4.0 m/s to the east and is stopped i...
 7.21P: From what maximum height can a 75kg person jump without breaking t...
 7.22P: A ball of mass 0.440 kg moving east (+ x direction) with a speed of...
 7.23P: A 0.450kg ice puck, moving east with a speed of 3.00 m/s, has a he...
 7.24P: Two billiard balls of equal mass undergo a perfectly elastic heado...
 7.25P: A 0.060kg tennis ball, moving with a speed of 2.50 m/s, collides h...
 7.26P: A softball of mass 0.220 kg that is moving with a speed of 8.5 m/s ...
 7.27P: ?(II) Two bumper cars in an amusement park ride collide elastically...
 7.28P: A 0.280kg croquet ball makes an elastic headon collision with a s...
 7.32P: A 28g rifle bullet traveling 230 m/s buries itself in a 3.6kg pen...
 7.33P: ?(II) (a) Derive a formula for the fraction of kinetic energy lost,...
 7.34P: An internal explosion breaks an object, initially at rest, into two...
 7.35P: A 920kg sports car collides into the rear end of a 2300kg SUV sto...
 7.36P: A ball is dropped from a height of 1.50 m and rebounds to a height ...
 7.37P: ?(II) A measure of inelasticity in a headon collision of two objec...
 7.39P: A 15.0kg object moving in the +x direction at 5.5 m/s collides hea...
 7.40P: A radioactive nucleus at rest decays into a second nucleus, an elec...
 7.41P: An eagle (mA = 4.3 kg) moving with speed vA = 7.8 m/s is on a colli...
 7.43P: After a completely inelastic collision between two objects of equal...
 7.48P: The CM of an empty 1050kg car is 2.50 m behind the front of the ca...
 7.49P: A square uniform raft, 18 m by 18 m, of mass 6800 kg, is used as a ...
 7.58P: A 55kg woman and an 80kg man stand 10.0 m apart on frictionless i...
 7.50P: ?(II) Three cubes, of sides , and , are placed next to one another ...
 7.59P: ?(II) A mallet consists of a uniform cylindrical head of mass and a...
 7.60P: ?(II) Suppose that in Example (Fig. 729), . Where then would land?...
 7.61P: A helium balloon and its gondola, of mass M, are in the air and sta...
 7.66GP: Two astronauts, one of mass 60 kg and the other 80 kg, are initiall...
 7.67GP: A ball of mass m makes a headon elastic collision with a second ba...
 7.68GP: You have been hired as an expert witness in a court case involving ...
 7.70GP: A bullet is fired vertically into a 1.40kg block of wood at rest d...
 7.71GP: A 25g bullet strikes and becomes embedded in a 1.35kg block of wo...
 7.72GP: Two people, one of mass 75 kg and the other of mass 60 kg, sit in a...
 7.73GP: A meteor whose mass was about 1.0 × 108 kg struck the Earth (mE = 6...
 7.75GP: The force on a bullet is given by the formula F = 580 ? (l.8 × 105)...
 7.76GP: ?Two balls, of masses and , are suspended as shown in Fig. . The li...
 7.77GP: An atomic nucleus at rest decays radioactively into an alpha partic...
 7.78GP: ?A kg skeet (clay target) is fired at an angle of to the horizon w...
 7.79GP: ?A block of mass slides down a incline which is high. At the bottom...
 7.80GP: ?In (Fig. 746), what is the upper limit on mass if it is to reboun...
 7.1Q: We claim that momentum is conserved. Yet most moving objects eventu...
 7.2Q: When a person jumps from a tree to the ground, what happens to the ...
 7.3Q: When you release an inflated but untied balloon, why does it fly ac...
 7.4Q: It is said that in ancient times a rich man with a bag of gold coin...
 7.5Q: How can a rocket change direction when it is far out in space and e...
 7.7Q: 15. Cars used to be built as rigid as possible to withstand collisi...
 7.8Q: Why can a batter hit a pitched baseball farther than a ball he hims...
 7.9Q: Is it possible for an object to receive a larger impulse from a sma...
 7.11Q: Describe a collision in which all kinetic energy is lost.
 7.12Q: At a hydroelectric power plant, water is directed at high speed aga...
 7.15Q: Why do you tend to lean backward when carrying a heavy load in your...
 7.16Q: Why is the CM of a 1 m length of pipe at its midpoint, whereas thi...
 7.18Q: If only an external force can change the momentum of the center of ...
 7.19Q: A rocket following a parabolic path through the air suddenly explod...
 7.20P: ?(III) Suppose the force acting on a tennis ball (mass 0.060 kg) po...
 7.29P: ?In a physics lab, a cube slides down a frictionless incline as sho...
 7.30P: ?(III) Take the general case of an object of mass and velocity elas...
 7.31P: (I) In a ballistic pendulum experiment, projectile 1 results in a m...
 7.38P: (II) A wooden block is cut into two pieces, one with three times th...
 7.44P: ?(III) Two billiard balls of equal mass move at right angles and me...
 7.45P: (III) A neon atom (m =20.0 u) makes a perfectly elastic collision w...
 7.46P: ?(I) Find the center of mass of the threemass system shown in Fig....
 7.47P: (I) The distance between a carbon atom (m =12 u) and an oxygen atom...
 7.51P: ?(II) A (lightweight) pallet has a load of identical cases of tomat...
 7.52P: ?(III) A uniform circular plate of radius has a circular hole of ra...
 7.53P: ?(I) Assume that your proportions are the same as those in Table , ...
 7.54P: ?Determine the of an outstretched arm using Table .
 7.55P: ?(II) Use Table to calculate the position of the of an arm bent at ...
 7.56P: ?(II) When a high jumper is in a position such that his arms and le...
 7.57P: (II) The masses of the Earth and Moon are 5.98 X 1024 kg And 7.35 X...
 7.69GP: A golf ball rolls off the top of a flight of concrete steps of tota...
 7.74GP: (II) An object at rest is suddenly broken apart into two fragments ...
 7.81GP: ?The gravitational slingshot effect. Figure shows the planet Saturn...
 7.8PE: the ski patrol lowers a rescue sled and victim, having a total mass...
 7.16CQ: List four different forms or types of energy. Give one example of a...
 7.16PE: A hydroelectric power facility (see Figure 7.38) converts the gravi...
 7.17CQ: List the energy conversions that occur when riding a bicycle.
 7.17PE: (a) How much gravitational potential energy (relative to the ground...
 7.18CQ: Most electrical appliances are rated in watts. Does this rating dep...
 7.18PE: Suppose a 350g kookaburra (a large kingfisher bird) picks up a 75...
 7.19CQ: Explain, in terms of the definition of power, why energy consumptio...
 7.19PE: In Example 7.7, we found that the speed of a roller coaster that ha...
 7.20CQ: A spark of static electricity, such as that you might receive from ...
 7.20PE: A 100g toy car is propelled by a compressed spring that starts it ...
 7.21CQ: why it is easier to climb a mountain on a zigzag path rather than o...
 7.21PE: a downhill ski race, surprisingly, little advantage is gained by ge...
 7.22CQ: you do work on the outside world when you rub your hands together t...
 7.22PE: 5.00×105 kg subway train is brought to a stop from a speed of 0.50...
 7.23CQ: is an involuntary response to lowered body temperature. What is the...
 7.23PE: pogo stick has a spring with a force constant of 2.50×104 N/m, whic...
 7.24CQ: the relative effectiveness of dieting and exercise in losing weight...
 7.62GP: A 0.145kg baseball pitched horizontally at 35.0 m/s strikes a bat ...
 7.24PE: 60.0kg skier with an initial speed of 12.0 m/s coasts up a 2.50m...
 7.63GP: A rocket of mass m traveling with speed along the x axis suddenly s...
 7.25CQ: is the difference between energy conservation and the law of conser...
 7.64GP: ?A novice pool player is faced with the corner pocket shot shown in...
 7.25PE: (a) How high a hill can a car coast up (engine disengaged) if work ...
 7.65GP: A 140kg astronaut (including space suit) acquires a speed of 2.50 ...
 7.26CQ: the efficiency of a coalfired electrical generating plant is 35%, ...
 7.26PE: values from Table 7.1, how many DNA molecules could be broken by th...
 7.27PE: energy considerations and assuming negligible air resistance, show ...
 7.28PE: the energy in fusion bombs were used to supply the energy needs of ...
 7.29PE: (a) Use of hydrogen fusion to supply energy is a dream that may be ...
 7.30PE: Crab Nebula (see Figure 7.41) pulsar is the remnant of a supernova ...
 7.31PE: a star 1000 times brighter than our Sun (that is, emitting 1000 tim...
 7.32PE: person in good physical condition can put out 100 W of useful power...
 7.33PE: is the cost of operating a 3.00W electric clock for a year if the ...
 7.34PE: large household air conditioner may consume 15.0 kW of power. What ...
 7.35PE: (a) What is the average power consumption in watts of an appliance ...
 7.36PE: (a) What is the average useful power output of a person who does 6....
 7.37PE: 500kg dragster accelerates from rest to a final speed of 110 m/s i...
 7.38PE: (a) How long will it take an 850kg car with a useful power output ...
 7.39PE: (a) Find the useful power output of an elevator motor that lifts a ...
 7.40PE: (a) What is the available energy content, in joules, of a battery t...
 7.41PE: (a) How long would it take a 1.50×105 kg airplane with engines tha...
 7.42PE: the power output needed for a 950kg car to climb a 2.00º slope at ...
 7.43PE: (a) Calculate the power per square meter reaching Earth’s upper atm...
 7.44PE: (a) How long can you rapidly climb stairs (116/min) on the 93.0 kca...
 7.45PE: (a) What is the power output in watts and horsepower of a 70.0kg s...
 7.46PE: the power output in watts and horsepower of a shotputter who takes...
 7.47PE: (a) What is the efficiency of an outofcondition professor who doe...
 7.48PE: that is not utilized for work or heat transfer is converted to the ...
 7.49PE: data from Table 7.5, calculate the daily energy needs of a person w...
 7.50PE: is the efficiency of a subject on a treadmill who puts out work at ...
 7.51PE: snow can be extremely taxing because the arms have such a low effic...
 7.52PE: large forces are produced in joints when a person jumps from some h...
 7.53PE: on hard surfaces with insufficiently padded shoes produces large fo...
 7.54PE: (a) Calculate the energy in kJ used by a 55.0kg woman who does 50 ...
 7.55PE: Kanellopoulos flew 119 km from Crete to Santorini, Greece, on April...
 7.56PE: swimmer shown in Figure 7.44 exerts an average horizontal backward ...
 7.57PE: climbers carry bottled oxygen when at very high altitudes. (a) Assu...
 7.58PE: aweinspiring Great Pyramid of Cheops was built more than 4500 year...
 7.59PE: (a) How long can you play tennis on the 800 kJ (about 200 kcal) of ...
 7.60PE: Concepts (a) Calculate the force the woman in Figure 7.46 exerts to...
 7.61PE: Concepts A 75.0kg crosscountry skier is climbing a 3.0º slope at ...
 7.62PE: Concepts The 70.0kg swimmer in Figure 7.44 starts a race with an i...
 7.63PE: Concepts A toy gun uses a spring with a force constant of 300 N/m t...
 7.64PE: Concepts (a) What force must be supplied by an elevator cable to pr...
 7.65PE: Results A car advertisement claims that its 900kg car accelerated ...
 7.66PE: Results Body fat is metabolized, supplying 9.30 kcal/g, when dietar...
 7.67PE: Your Own a person climbing and descending stairs. Construct a probl...
 7.68PE: Your Own humans generating electricity by pedaling a device similar...
 7.69PE: Concepts A 105kg basketball player crouches down 0.400 m while wai...
 7.1P: (I) What is the magnitude of the momentum of a 28g sparrow flying ...
 7.2P: A constant friction force of 25 N acts on a 65kg skier for 20 s. W...
 7.3P: A 0.145kg baseball pitched at 39.0 m/s is hit on a horizontal line...
Solutions for Chapter 7: Physics: Principles with Applications 6th Edition
Full solutions for Physics: Principles with Applications  6th Edition
ISBN: 9780130606204
Solutions for Chapter 7
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Key Physics Terms and definitions covered in this textbook

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parallel

any symbol
average (indicated by a bar over a symbol—e.g., v¯ is average velocity)

°C
Celsius degree

°F
Fahrenheit degree