Physics Laboratory Experiments
8th Edition
ISBN: 9781285738567
Author: Jerry D. Wilson, Cecilia A. Hernández-Hall
Publisher: Cengage Learning
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Chapter 5, Problem 1ASA
How is the acceleration of a car traveling on an elevated air track related to (a) the angle of elevation; (b) the height of elevation?
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Chapter 5 Solutions
Physics Laboratory Experiments
Ch. 5 - What effect might the distance of fall have on...Ch. 5 - From the preceding calculation, it should be...Ch. 5 - Given three objects with same size and shape, but...Ch. 5 - Suppose that the initial height of the object were...Ch. 5 - How is the acceleration of a car traveling on an...Ch. 5 - Will the graph of instantaneous velocity versus...Ch. 5 - Objects of different mass were used to see whether...Ch. 5 - What is probably the greatest source of error in...Ch. 5 - What are the major sources of error in this...Ch. 5 - What would be the shapes of the curves for a graph...
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- Freeway Traffic. According to a Scientific American article (May 1990 ), current freeways can sustain about 2400 vehicles per lane per hour in smooth traffic flow at 96 km/h (60 mi/h ). With more vehicles the traffic flow becomes "turbulent" (stop-and-go). (a) If a vehicle is 4.6 m (15ft) long on the average, what is the average spacing between vehicles at the above traffic density? (b) Collision avoidance automated control systems, which operate by bouncing radar or sonar signals off surrounding vehicles and then accelerate or brake the car when necessary, could greatly reduce the required spacing between vehicles. If the average spacing is 9.2 m (two lengths), how vehicles hour can car many per a lane of traffic carry at 96 km/hkm/h ?arrow_forwardAt an altitude of 4 times the radius of the earth, the acceleration due to gravity isarrow_forwardA jetliner has a cruising air speed of 600 mph relative to theair. How long does it take this plane to fly round-trip fromSan Francisco to Chicago, an east-west flight of 2,000 mi each way,(a) if there is no wind blowing and (b) if the wind is blowing at150 mph from the west to the east?arrow_forward
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- Calculate the speed (in m/s) a spherical rain drop would achieve falling from 3.80 km in the absence of air drag and with air drag. Take the size across of the drop to be 3 mm, the density to be 1.00 x 103 kg/m³, and the surface area to be ar?. (Assume the density of air is 1.21 kg/m3.) (a) in the absence of air drag m/s (b) with air drag m/sarrow_forwardA stone is thrown horizontally with an initial speed of 15 m/s from a bridge. Assuming that air resistance is negligible, how long would it take the stone to strike the water 80 m below the bridge?arrow_forwardInclude the direction whether it is upward or downwardarrow_forward
- The horizontal distance d, in meters, travelled by a ball that is kicked at an angle, 0, with the ground is modelled by the formula d = 2(v.) cos? 0–1 initial velocity of the ball, in meters per second, and g is the force of gravity (9.8m/s2). Which expression is identical to the given formula? , where v, is the 1,2 cos e =PO ," cos 20 = P O no correct answer U, sin 20 d v, tan 20arrow_forwarda) A wind turbine with two or four hollow hemispherical cups connected to a pivot is commonly uscd to measure wind speed. Consider a wind turbine with four 8-cm- diameter cups with a center-to-center distance of 40 cm, as shown in Fig. PI1-35. The pivot is stuck as a result of some malfunction, and the cups stop rotating. For a wind speed of 15 m/s and air density of 1.25 kg/m3, determine the maximum torque this turbine applies on the pivot. A hemisphere at two different orientations for Re > 10 40 cm C04arrow_forwardA strong softball player smacks the ball at a height of 0.7 m above home plate. The ball leaves the players bat at an elevation angle of 35 and travels toward a fence 2 m high and 60 m away in center field. What must the initial speed of the softball be to clear the center field fence? Ignore air resistance.arrow_forward
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Kinematics Part 3: Projectile Motion; Author: Professor Dave explains;https://www.youtube.com/watch?v=aY8z2qO44WA;License: Standard YouTube License, CC-BY