A generation is about one-third of a lifetime. Approximately how many generations have passed during the last 2,000 years?

Q: You drive 5.00 km in a straight line in a direction 15° East of North. (a) Find the distances you…

A: GIVEN : R= 5.00 km (a) Distance when moved to east and north to reach same point  Let X be east…

Q: the lower one. How many electrons must you "shuttle" in order to get the lower cannon ball to hover…

A: To make the lower cannonball hover below the upper ball, the electrostatic attraction force of the…

Q: Near the end of a marathon race, the first two runners are separated by a distance of 45.0 m. The…

A: d = 45 m velocity of first runner = 3.5 m/s velocity of second runner = 4.25 m/s a) velocity of…

Q: An electron sitting in the -4eV energy level of this atom is struck with a photon of wavelength…

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Q: Taking the age of Earth to be about 4 x 10° years and assuming its orbital radius of 1.5 x 1011 m…

A: Earth revolves around the sun in a circular path. If the radius of the orbit is R then earth travels…

Q: When a motor slows down from 377 rad/s to 189 rad/s in 5.00 s, it turns through: 2830 rev 1415 rev…

A: Initial angular velocity of motor is ω1=377 rad/s Final angular velocity of motor is ω2=189/s 0Time…

Q: Two manned satellites approaching one another at a relative speed of 0.550 m/s intend to dock. The…

A: The momentum p and kinetic energy K of a particle of mass m and velocity v is given by, p = mv K =…

Q: Two manned satellites approaching one another at a relative speed of 0.300 m/s intend to dock. The…

A: If we take the second satellite to be initially at rest, then the velocity of first satellite in the…

Q: QUESTION 9 3.81 ↑ + A= 1.04 4.74 + 4.83 + 1.61 î+ 3.22 Calculate the angle between vectors A and B…

A: cos(theta) = A.B/|A| |B| theta is the angle between A vector and B vector A.B = dot product of A and…

Q: A 65.0 kg skier with an initial speed of 12.0 m/s coasts up a 2.50 m high rise as shown in Figure…

A: Given data: Initial speed of skier, u=12.0 m/s Mass of the skier, m=65.0 kg Height of the coast,…

Q: (4) (a) How many microns is the wavelength of a photon radiated by a hydrogen atom in which the…

A: We are authorized to answer one problem at a time, since you have not mentioned which one you are…

Q: 78. Two equal and opposite charges of magnitude Q are located on the x-axis at the points +a and -a,…

A: The square sheet may be considered as one of the faces of a cube with the charge at the center. Flux…

Q: A car's bumper is designed to withstand a 5.40-km/h (1.5-m/s) collision with an immovable object…

A: Use work energy theorem W=∆EkFavgd=12mvf2-vi2Favg=mvf2-vi22d

Q: * The vibrating length of a guitar string is reduced by a factor of 2.5 when a player holds the…

A: The vibrating length of a guitar string is reduced by a factor of 2.5 when a player holds the string…

Q: A person in good physical condition can put out 100 W of useful power for several hours at a…

A: power of each person = 100 Wefficiency = 100 %

Q: 71. Estimate the wavelength of the Ka X-ray from calcium.

A: As we know that,the freqency f of the Kα Lie is related to the atomic number z by Mosley's…

Q: A -0.004 C charge is located in an electric field with magnitude 40 N/C. How much force does the…

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Q: A trombone has a variable length. When a musician blows into the mouthpiece and causes air in the…

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Q: A collie drags its bed box across a floor by applying a horizontal force of 9.6 N. The kinetic…

A:

Q: (a) What is the efficiency of an out-of-condition professor who does 1.90 x 105 J of useful work…

A: (a) The expression to solve for the efficiency of the work done by the professor while metabolizing…

Q: (5) The wave function for a particle is given by: (x) = Ae /L for z2 0, where A andL are constants,…

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Q: Podracing is a very popular auto racing sport in the Star Wars universe. Although it is dangerous,…

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Q: (a) the total distance traveled X m (b) the distance from start to finish X m (c) the displacement…

A: the diagram of path B is given below:

Q: At the end of a race a runner decelerates from a velocity of 9.00 m/s at a rate of 0.400 m/s². (a)…

A: a) Given data The initial velocity of the runner is u = 9 m/s. The deceleration of the runner is a…

Q: A rectangular brick is 208±4mm long, 85 ± 2 mm wide, and 50 ± 2 mm thick, with a mass of 1.73 ± 0.08…

A:

Q: The cannon on a battleship can fire a shell a maximum distance of 47.0 km. (a) Calculate the initial…

A: (a) Given data The maximum distance covered by the cannon is: Dmax = 47 km   The expression for the…

Q: A magnetic field B is oriented perpendicular to a circular coil of circumference C. Calculate the…

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Q: In order for a magnetic field to apply a force on a charged particle (select two answers): The…

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Q: What is the speed of light in oil, with index of refraction 1.5 O 2.4×10^8 m/s O 3.0×10^8 m/s O…

A: Given :      Refractive index of oil, n = 1.5 We have,    velocity of light in vacuum, c = 3*108 m/s

Q: A crude approximation of voice production is to consider the breathing passages and mouth to be a…

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Q: Find the following for path B in the figure below. A В D 0 2 4 6 8 10 12 displacement x (m) (a) The…

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Q: A 0.250 kg hammer is moving horizontally at 5.00 m/s when it strikes a nail and comes to rest after…

A: a) Using kinematic equation, the expression for find acceleration is v2=u2+2asa=v2-u22s Insert…

Q: In a downhill ski race surprisingly little advantage is gained by getting a running start. This is…

A: Given: The distance skier skies is d=60 m, The slope is θ=25°

Q: A parallel-plate capacitor has plates of 4.50 cm by 4.00 cm. The plates are separated by a…

A: Given data:  Sides of plate = 4.50 cm by 4.00 cm Distance between plates (d) = 0.300 mm Dielectric…

Q: One hazard of space travel is debris left by previous missions. There are several thousand masses…

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Q: Before Collision v= 12m/s v=10 m/s After Collision ui m= 3kg v-4m/s v=??? m= 4kg m=3 kg - 4kg

A:

Q: 8.1 The Hydrogen Atom 25. The wave function is evaluated at rectangular coordinates ( x, y, z) = (2,…

A: Given:-                  The wave function is evaluated at rectangular coordinates (x, y, z) = (2,…

Q: #10. Lens 1 and lens 2 shown have objects that are identical in size and location relative to the…

A: according to the formula of lens:1v-1-u=1f

Q: Suppose a horse leans against a wall as in Figure 5.35. Calculate the force exerted on the wall…

A: Introduction: Torque or moment of force: The turning effect of a force about the axis of rotation is…

Q: A soft tennis ball is dropped onto a hard floor from a height of 1.50 m and rebounds to a height of…

A: