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standng S 46 From a distance of 4.0 m, a bystander listens to a jackham- mer...
From a distance of 4.0 m, a bystander listens to a jackhammer breaking concrete. How far...
From a distance of 4.0 m, a bystander listens to a jackhammer breaking concrete. How far would he need to move from the jackhammer so that its perceived loudness decreases by a factor of 12? Express your answer to two significant figures and include the appropriate units. The answer is NOT 11 or 12 m
Review | Constants Periodic Table From a distance of 4.0 m, a bystander listens to a...
Review | Constants Periodic Table From a distance of 4.0 m, a bystander listens to a jackhammer breaking concrete. Part A .. MasteringPhysics: HW 6 (Partial) session.masteringphysics.com/myct/itemView?... How far would he need to move from the jackhammer so that its perceived loudness decreases by a factor of 2? Express your answer with the appropriate units. Submitted Answers ANSWER 1: == 1.7 m r = 5.65 m Submit Previous Answers Request Answer ANSWER 2: r = 3.33 m X Incorrect; Try...
this is one question with 3 parts D. From a location 4.0 m away, you listen...
this is one question with 3 parts
D. From a location 4.0 m away, you listen to a jackhammer breaking concrete. 1. How far away would you have to stand in order to reduce the sound intensity by a factor of 8 (12 = 11/8)? Show your calculation. 2. If the intensity of the sound has decreased by a factor of 8, by what factor has the amplitude of the sound wave decreases? Explain your answer. 3. If the intensity...
8 10 11 12 8. In unit-vector notation, A = (4.0 m) + (3.0 m)ŷ and...
8 10 11 12
8. In unit-vector notation, A = (4.0 m) + (3.0 m)ŷ and B = (-13.0 m)Â + (7.0 m), (a) what is the sum of the two vectors? (b) What are the magnitude and (c) the direction of A + B (relative to )? 9. Two vectors are given by A = (4.0 m) – (3.0 m)ỹ + (1.0)2 and B = (-1.0 m) + (1.0 m)ĝ+ (4.0 m)2. In unit-vector notation, find (a) A +...
A ball is thrown from a rooftop with an initial downward velocity of magnitude v0 = 1.1 m/s. The rooftop is a distance above the ground, h = 46 m.
A ball is thrown from a rooftop with an initial downward velocity of magnitude v0 = 1.1 m/s. The rooftop is a distance above the ground, h = 46 m. In this problem use a coordinate system in which upwards is positive. Part (a) Find the vertical component of the velocity, Vfy, in meters per second, with which the ball hits the ground. Part (b) If we wanted the ball's final speed to be exactly 27.3 m/s from what height, hnew (in...
Problem 6.70 (Multistep) Two protons are a distance 4 x 10-9 m apart. Part 1 (a)...
Problem 6.70 (Multistep) Two protons are a distance 4 x 10-9 m apart. Part 1 (a) What is the electric potential energy of the system consisting of the two protons? Ua= joules the tolerance is +/-2% By accessing this Question Assistance, you will learn while you earn points based on the Point Potential Policy set by your instructor. Attempts: 0 of 10 used SAVE FOR LATER SUBMIT ANSWER Part 2 (b) If the two protons move closer together, will the...
3. A ball, a solid sphere of radius r and mass m, is positioned at the top of a ramp that makes an angle of 0 with the horizontal. The initial position of the sphere is at a distance of d from its fi...
3. A ball, a solid sphere of radius r and mass m, is positioned at the top of a ramp that makes an angle of 0 with the horizontal. The initial position of the sphere is at a distance of d from its final position at the bottom of the incline. a) Find the velocity of the ball at the bottom of the ramp in terms of m, r, d, 8, and g. The moment of inertia of a sphere...
Hi I need help with the following problems: 1.A ball is thrown horizontally from the roof...
Hi I need help with the following problems: 1.A ball is thrown horizontally from the roof of a building 45.0 m tall and lands 24.0 m from the base. What was the ball’s initial speed? 2.A football is kicked at ground level with a speed of at an angle of 36.9º to the horizontal. How much later does it hit the ground? How height does it rise? What is its range? 3.A projectile is fired with an initial speed of...
2. Suppose a car travels 108 km at a speed of 20.0 m/s, and uses 2.20...
2. Suppose a car travels 108 km at a speed of 20.0 m/s, and uses
2.20 gallons of gasoline. Only 30% of the gasoline goes into useful
work by the force that keeps the car moving at constant speed
despite friction. (The energy content of gasoline is 1.3 ✕
108 J per gallon.)
(a) What is the force exerted to keep the car moving at constant
speed?
N
(b) If the required force is directly proportional to speed, how
many...
75 To stop a car, first you require a certain reaction time to be 2The psition...
75 To stop a car, first you require a certain reaction time to be 2The psition of a particle moving along the x sxis depends on gin braking: then the car slows at a constant rate. Suppose that the the time according to the equationxbP, where a is in me total distance moved by your car during these two phases is 56.7 m lers and rin secondh What are the units of (a) constant e and (b) con- when its...
Review | Constants Periodic Table From a distance of 4.0 m, a bystander listens to a jackhammer breaking concrete. Part A .. MasteringPhysics: HW 6 (Partial) session.masteringphysics.com/myct/itemView?... How far would he need to move from the jackhammer so that its perceived loudness decreases by a factor of 2? Express your answer with the appropriate units. Submitted Answers ANSWER 1: == 1.7 m r = 5.65 m Submit Previous Answers Request Answer ANSWER 2: r = 3.33 m X Incorrect; Try...
this is one question with 3 parts
D. From a location 4.0 m away, you listen to a jackhammer breaking concrete. 1. How far away would you have to stand in order to reduce the sound intensity by a factor of 8 (12 = 11/8)? Show your calculation. 2. If the intensity of the sound has decreased by a factor of 8, by what factor has the amplitude of the sound wave decreases? Explain your answer. 3. If the intensity...
8 10 11 12
8. In unit-vector notation, A = (4.0 m) + (3.0 m)ŷ and B = (-13.0 m)Â + (7.0 m), (a) what is the sum of the two vectors? (b) What are the magnitude and (c) the direction of A + B (relative to )? 9. Two vectors are given by A = (4.0 m) – (3.0 m)ỹ + (1.0)2 and B = (-1.0 m) + (1.0 m)ĝ+ (4.0 m)2. In unit-vector notation, find (a) A +...
Problem 6.70 (Multistep) Two protons are a distance 4 x 10-9 m apart. Part 1 (a) What is the electric potential energy of the system consisting of the two protons? Ua= joules the tolerance is +/-2% By accessing this Question Assistance, you will learn while you earn points based on the Point Potential Policy set by your instructor. Attempts: 0 of 10 used SAVE FOR LATER SUBMIT ANSWER Part 2 (b) If the two protons move closer together, will the...
3. A ball, a solid sphere of radius r and mass m, is positioned at the top of a ramp that makes an angle of 0 with the horizontal. The initial position of the sphere is at a distance of d from its final position at the bottom of the incline. a) Find the velocity of the ball at the bottom of the ramp in terms of m, r, d, 8, and g. The moment of inertia of a sphere...
2. Suppose a car travels 108 km at a speed of 20.0 m/s, and uses
2.20 gallons of gasoline. Only 30% of the gasoline goes into useful
work by the force that keeps the car moving at constant speed
despite friction. (The energy content of gasoline is 1.3 ✕
108 J per gallon.)
(a) What is the force exerted to keep the car moving at constant
speed?
N
(b) If the required force is directly proportional to speed, how
many...
75 To stop a car, first you require a certain reaction time to be 2The psition of a particle moving along the x sxis depends on gin braking: then the car slows at a constant rate. Suppose that the the time according to the equationxbP, where a is in me total distance moved by your car during these two phases is 56.7 m lers and rin secondh What are the units of (a) constant e and (b) con- when its...
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