A force of 4 pounds compresses a 15-inch spring a total of 4 inches. How much work is done in compressing the spring 8 inches? Use Hooke's Law to determine the variable force. Work done:? ft-lb

Q: In the figure below, the switches S, and S, are closed simultaneously at t = 0 and a current starts…

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Q: 2. A playground is on the flat roof of a city school, 6.00 m above the street below. The vertical…

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Q: Use the data of this table to find the point between Neptune and the Sun at which an object can be…

A: We have mass Sun M1=1.991*1030kg, mass of Neptune M2=1.03*1026kg and distance between the Sun and…

Q: A string on the violin has a length of 19.80 cm and a mass of 0.0752 g. The fundamental frequency of…

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Q: 1. A spring mass system is placed on smooth horizontal table. From equilibrium position the mass is…

A: Given tAB=2secM=200g=0.2 KgU=total energy=0.9 J

Q: A student examining a flashlight observes that it uses a traditional incandescent light bulb. The…

A: We know, P=VII=PV

Q: A 9.00 pF capacitor is connected in series with a 6.00 pF capacitor and a 850 V potential difference…

A: Given:-  The two capacitance are as  C1= 9 pF C2= 6 pF   The capacitance is in the series and the…

Q: 18. The necessary conditions for the equilibrium of an object is a) ΣF=0 and Στ0 b) ΣΤ= 0 and Σ Ιω-0…

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Q: The rectangular loop of wire shown in the figure (Figure 1) has a mass of 0.11 g per centimeter of…

A: Given,Mass per unit length, μ=0.11 g/cmTotal length, L = 2×(6+8) cm = 28 cmTotal mass of the loop, m…

Q: What is the focal length (in cm) of a magnifying glass that produces a magnification of 3.85 when…

A: Given: Magnification, m = 3.85Object distance, u = 4.75 cm Need to find focal length, f

Q: Find the total capacitance (in µF) of this combination of series and parallel capacitors shown…

A: Given Here capacitance of the three capacitors are given as C1=15 μF, C2=8.5 μF and C3=0.80 μF   We…

Q: Consider a sound wave moving through the air modeled with the equation s(x, t) = 3.00 nm cos(55.00…

A: Given:      Sx,t=3nmcos55m-1x-14×103s-1tHere wave number k=55 m-1       And…

Q: find the inertia tensor about the origin, and find the principal moments of inertia and the…

A: The tetrahedron bounded by x + y + z = 1 and the coordinate ­planes. To compute the moment of…

Q: The magnitude of the magnetic field 47 cm from a long, thin, straight wire is 6.8 µT. What is the…

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Q: A piano tuner hears a beat every 1.90 s when listening to a 260.0 Hz tuning fork and a single piano…

A: Solution: Given: T = time period of beats = 1.90 s f = frequency of tuning fork = 260.0 Hz f1 =…

Q: asticity & Waves 19. What is the time required for one complete vibration of an ultrasonic…

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Q: You notice two birds, sitting in an elm tree very close to each other and at exactly the same…

A: Sound travels through any medium in the form of compression waves. These sound waves are thus…

Q: A high-jumper jumps, and as she leaves the ground her velocity has both a non-zero horizontal…

A: Let mass of jumper = m  Let initial horizontal velocity = u  Let initial vertical velocity = v