A charging bull elephant with a mass of 5240 kg comes directly toward you with a speed of 4.55 m/s. You toss a 0.150-kg rubber ball at the elephant with a speed of 7.81 m/s. (a)When the ball bounces back toward you, what is its speed? (b) How do you account for the fact that the ball’s kinetic energy has increased? Explain and draws.

Q: Determine the force of gravity acting on a 150,000 kg space station orbiting at a position 6.67E 6m…

A: Given data:  Mass of space station (m) = 150,000 kg Distance from center of the earth (r) = 6.67×106…

Q: Suppose a lens is placed in a device that determines its power as 2.99 diopters. (a) Find the focal…

A: Given,  Power of lens = 2.99 diopter Patient's near point =? We need to find, (a) Focal length of…

Q: Compute the density for copper at 480C given that its room temperature (20C) density is 8.89g/cm3.…

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Q: Two metal plates are separated by 6 inches with a potential difference of 0.30 kV. What is the…

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Q: An unknown metal sample is interrogated using a beam of X-rays to liberate electrons which are then…

A: The given problem involves the concept of photoelectric effect. Photoelectric Effect is the…

Q: Two resistors are connected in series with an 34.76 volt battery. The resistors have values of R1 =…

A: Given data:  Battery voltage (V) = 34.76 V Two resistors are connected in series combination R1 =…

Q: 3. A constant force of 20.0 N is applied to an object of mass 8.00 kg at an angle of 25.0° with the…

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Q: How many photons are produced in a laser pulse of 0.291 J at 493 nm?

A: Given data:  Total Energy (ET) = 0.291 J Wavelength (λ) = 493 nm = 493×10-9 m Required: The number…

Q: Two +1 C charges are separated by 3000 m. a) Draw a sketch of the scenario. b) What is the magnitude…

A: Given data:  Two charges q1 = q2 = +1 C Distance (r) = 3000 m Required: The magnitude of the…

Q: What is the mass of an object that weighs 420N?

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Q: It is generally a good idea to gain an understanding of the size of units. Consider each object and…

A: We need to find the momentum for each given case.

Q: 12 4. Atwood's machine consists of two masses connected by a string that passes over a pulley, as…

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Q: The mutual flux in the core of a 47.9 - cycle transformer that has 800 primary turns and 190…

A: Solution: Given data, Primary turns N1 =800 Secondary turns N2 =190 Mutual flux = 2.17 × 10-6…

Q: If a linearly polarized electromagnetic wave is propagating out of the plane of screen and the…

A: As direction of propagation of em wave is perpendicuar to electric and magneticfield, given by E→×B→

Q: A 90-kg football player jumps vertically into the air to catch a 0.50-kg football that is thrown…

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Q: 2. A hiker walking 10km west then 25km south. 3. A car driven 250km south then 150km west. [SCALE:…

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Q: Starting from rest, a basketball rolls from the top to the bottom of a hill, reaching a…

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Q: .)  This is differential Calculus subject. A PARTICLE IS MOVING ALONG A HORIZONTAL LINE ACCORDING…

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Q: A sodium light, having wavelength 589.3 nm, is used to view a soap film to make it look black when…

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Q: A square wire with 2 m sides is perpendicular to a uniform magnetic field, with half the area of the…

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Q: A horizontal, uniform, solid copper rod has an original length lo, cross-sectional area A, Young's…

A: Torque exerted about the pivot by force of gravity of the rod  = Torque exerted about pivot by…

Q: (8c30p31) A metal rod is forced to move with constant velocity = 75.0 cm/s along two parallel metal…

A: Solution: Given: v = constant velocity of rod = 75.0 cm/s = 0.750 m/s B = magnetic field (out of…

Q: In front of a spherical convex mirror of radius 55.1 cm, you position an object of height 3.64 cm…

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Q: A toy mobile is built like the one shown below. Object A has a 0.5-kg mass. What should be the mass…

A: We just have to balance this toy mobile to determine mass of B,we need to balance forces and torques…

Q: 1. A visibly distraught Granny has emerged from her car (it seems everyone has been ignoring her and…

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Q: A 2.3 kg brick slides down a smooth rubble chute with a profile of parabola: y = 1.75 + x², so that…

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Q: (a) Calculate the force (in N) the woman in the figure below exerts to do a push-up at constant…

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Q: Find the energy released in the alpha decay of 22086Rn (220.01757 u). (Hint: 21684Po has a mass of…

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Q: A garden hose is attached to a water faucet on on end and a spray nozzle on the other end. The wat…

A: Solution

Q: A mirror is moving toward a stationary observer at 5 m/s. At what speed is the image of the observer…

A: Given data:  A mirror is moving toward a stationary observer Speed of mirror (v) = 5 m/s Required:…

Q: The earth moves around the sun in a nearly circular orbit of radius 1.50 x 10¹1 m. During the three…

A: a) Write the expression for the circumference of the circular orbit. C=2πR Write the expression for…

Q: A 2.00kg mass is swung on the end of a rope that is 1.20m long at a speed of 3.00m/s. What is the…

A: Givenlength of rope, r=1.20 mmass, m=2 kgspeed , v=3 m/sFormula for centripetal forceF=mv2r

Q: What must be the magnitude of a uniform electric field if it is to have the same energy density as…

A: Given data The magnetic field is given as B = 0.5 T. The mathematical expression to calculate the…

Q: A cylindrical storage tank has a radius of 1.06 m. When filled to a height of 3.67 m, it holds 12600…

A: Given data:  A cylindrical storage tank filled with solvent  Radius (r) = 1.06 m Height (h) = 3.67 m…

Q: A box rests on a 20 degree incline with a coefficient of friction 0.4.  Calculate the magnitude of…

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Q: The Bohr model for the hydrogen atom posits that the atom's electron can only occupy circular…

A: Solution: Given: With reference to Bohr's H atom model, you are required to find the radius (of…

Q: An object is 50 cm from a concave mirror of radius of curvature of magnitude 80 cm. How far is the…

A: Given data:  A concave mirror  Object distance = 50 cm Radius of curvature (R) = 80 cm Required: The…

Q: How fast, in rpm, would a 129 g, 44.0 cm diameter beach ball have to spin to have an angular…

A: Given data: The mass, m=129 g =0.129 kg The diameter, d = 44.0 cm = 0.44 m The radius, r=d2=0.22 m…

Q: What is the redshift z of a galaxy 172 Mpc away from us?   Note: Assume a value of the Hubble…

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Q: A square steel bar of side length w = 0.19 m has a thermal conductivity of k = 15.3 J/(s⋅m⋅°C) and…

A: Given data: Side length of the square steel bar, w=0.19 m Thermal conductivity, k=15.3 J/(s.m.C0)…

Q: The near point of a farsighted person is 100 cm. She places reading glasses very close to her eyes…

A: Given,  p = 25 cm q = -100 cm

Q: In the figure, block 1 has mass m₁ = 460 g, block 2 has mass m₂ = 570 g, and the pulley is on a…

A: Given, The diagram, The mass of the first block, m1=0.46 Kg The mass of the second block, m2=0.57…

Q: 2) Ray decides to paint the outside of his uncle's house. He uses a 4.0-m-long board supported by…

A: Given data 4m long board mass = 21 kg 1 m from the left cable what are the forces that each cable…

Q: 1. A solid cylinder, hollow cylinder, and a box, all of equal mass, are released simultaneously from…

A: 1) The box will reach the last because it will suffer a lot of friction since it will slide instead…

Q: What is the equivalent complex impedance Zea of the given circuit? Give numerical values in four…

A: As these three are in parallel, we can use the impedance formulas for capacitor and inductorthen we…

Q: During a heavy storm, a steady stream of water flows down from a 4.5-cm-diameter hole in a gutter.…

A:

Q: A 320-g air track cart traveling at 1.25m/s suddenly collides elastically with a stationary 270-g…

A: The mass of the first air track cart, m1=320 g=0.320 kg The mass of the second cart, m2=270 g=0.270…

Q: A meat baster consists of a squeeze bulb attached to a plastic tube. When the bulb is squeezed and…

A: Atmospheric pressure = 101300 Pa density = 1340 kg m-3

Q: Suppose a strong wind is blowing toward Denver (elevation 1630 m) from Grays Peak (80 km west of…

A:

Helmholtz Free Energy

The Helmholtz free energy is a thermodynamic potential used to calculate the measure of useful work from a closed system. This system is kept at constant temperature and volume. German physicist Hermann Helmholtz introduced this concept in 1882.