sections

Q: A disk of mass m, radius R, and area A has a surface mass density σ = mr/AR (see the following figur...

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Q: A 110 kg linebacker running at 2.0 m/s and an 82 kg quarterback running at 3.0 m/s have a head-on co...

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Q: The initial velocity of an object is 10 m/s. The object slows down until it finally stops: A. If the...

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Q: Describe the The Submicroscopic Origin of Polarization.

A: Step 1 The atom has one nucleus, positively charged, and electrons are rotating in the shell around ...

Q: A flywheel slows from 600 to 400 rev/min while rotating through 40 revolutions. (a) What is the angu...

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Q: A ball is kicked from the ground with an initial speed = 50 m/s at an angle of |V|20. A. What is the...

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Q: What three factors affect the torque created by a force relative to a specific pivot point?

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Q: Does the capacitance of a device depend on the applied voltage? What about the charge stored in it?

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Q: In a study designed to better understand the dynamics of walking, a subject stood with one leg at re...

A: Given In a study designed to better understand the dynamics of walking, a subject stood with one leg...

Q: A 0.90-kg falcon is diving at 28.0 m/s at a downward angle of 35° . It catches a 0.325-kg dove from ...

A: According to the conservation of momentum,  

Q: The setup shown is used to measure the output of a small turbine. The coefficient of kinetic frictio...

A: Given data We have to find the reading on the scale when the wheel is rotating in a clockwise direc...

Q: An outdoor WiFi unit for a picnic area has a 100-mW output and a range of about 30 m. What output po...

A: Given,

Q: A source of frequency of 60 Hz is used to make waves in a rope that is 3.0m long. It takes 0.10s for...

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Q: Consider a golf club hitting a golf ball. To a good approximation, we can model this as a collision ...

A: From Newton’s second law of motion:

Q: I need step by step help please.

A: Given  The speed of the police car is vp = 95 km/hr. The speed of the motorist is vm = 80 km/hr. The...

Q: How much energy can be stored in a spring with a spring constant of 500 N/m if its maximum possible ...

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Q: (II) A two-component model used to determine percent body fat in a human body assumes that a fractio...

A: Given: Fraction of the body= f The specific gravity of the entire body’s density is  X

Q: How does the national grid respond to changing demand?

A: The demand for electricity does not remain constant throughout the day.  

Q: A golfer has a choice of hitting a ball at 51° or at 38°. For maximum distance, which should the gol...

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Q: A particle moves along the x-axis according to the equation x = 3.00 + 5.00t – 4.00t2 + 2t3   where ...

A: Position at t = 2.00 s

Q: The position of a particle moving in one dimension along the x axis is given by x(t) =5.5 + 7.8t + 2...

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Q: A crazy person jumped off a 100-meter cliff because of climate change (it's hot, you know). He is la...

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Q: Normalize the wave function Ψ (x) = A exp (–ax2), A and a are constants, over the domain −∞ ≤ x ≤ ∞

A: Normalization of wave function means scaling of wave function to 1 such that probability of finding ...

Q: The unit vector from A(4, 2) to the point B(-2, 10) is:

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Q: A person with a black belt in karate has a fist that has a mass of 0.70 kg. Starting from rest, this...

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Q: Boxes A and B as shown have masses of 12.0 kg and 4.0 kg, respectively. The two boxes are released f...

A: Given details: Mass of A=12.0kg Mass of B=4.0kg Released from rest The initial velocity of A=0 The i...

Q: A 2000-kg railway freight car coasts at 4.4 m/s underneath a grain terminal, which dumps grain direc...

A: Given: A 2000-kg railway freight car coasts at 4.4 m/s underneath a grain terminal, which dumps grai...

Q: A 2.3 kg box, starting from rest, is pushed up a ramp by a 10 N force parallel to the ramp. The ramp...

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Q: 2-please see attached

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Q: Sarah is traveling 22km due South. She turns 20° S or E for 16km. She then turns due N for 40km, she...

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Q: In assembling a train from several railroad cars, two of the cars, with masses 2.0 x 104 kg and 4.0 ...

A: The mass of the lighter car,   The mass of the heavier car,   The initial speed of the lighter car...

Q: At a particular instant, a 1.0-kg particle’s position is r → = (2.0i ^ − 4.0j ^ + 6.0k ^ )m , its ve...

A: The mass of the particle m=1.0 kg The angular momentum L is   

Q: 15. Object 1 is moving along the x axis with an initial momentum of +16 kg · m/s, where the + sign i...

A: Given quantities: Initial momentum of object 1 along the x axis (P1x) = +16 kg.m/s Final momentum of...

Q: A compact disc rotates at 500 rev/min. If the diameter of the disc is 120 mm, (a) what is the tangen...

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Q: In the law of universal gravitation, Newton assumed that the force was proportional to the product o...

A: let m1 and m2 be the mass of the first and second body and r is the distance between these two bodie...

Q: On aircraft carriers, catapults are used to accelerate jet aircraft to flight speeds in a short dist...

A: It is given that,

Q: Explain why helium weather balloons, which are used to measure atmospheric conditions at high altitu...

A: The formula for pressure in terms of height is         Here h1  and h2  stands  for the heights Whe...

Q: Disk A, with a mass of 2.0 kg and a radius of 40 cm, rotates clockwise about a frictionless vertical...

A: given quantities: m1 = 2 kg r1 = 0.4 m w1 = - 30 rev/s m2 = 2 kg r2 = 0.2 m w2 = 30 rev/s The angula...

Q: Charge q1 = +4.0 μC is located at (0.0, 0.0) m; charge q2 = +2.0 μC is located at (3.0, 4.0) m; and ...

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Q: An undammed oscillator is driven at its resonance frequency a, by a harmonic force F = F, sin(@t) - ...

A: Given,             Oscillator is undammed             Resonance frequency = ωo             Harmonic ...

Q: Explain the difference between conductor and insulators. Give at least 3 examples of each?

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Q: A particle of mass m is fixed to one end of a light rigid rod of length L and rotated in a vertical ...

A: L is the length of the rod and m is the mass attached to the rod . Let T is the tension in the rod ....

Q: (II) A pipe in air at 23.0°C is to be designed to producetwo successive harmonics at 280 Hz and 320 ...

A:  will be the fundamental frequency if the tube is open at both ends. Open tubes have all harmonics. ...

Q: What is the electric potential at the point indicated with the dot shown?

A: From the figure

Q: (II) Estimate the frequency of the "sound of the ocean" when you put your ear very near a 15-cm-diam...

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Electric Charges and Fields

One of the fundamental properties is the electromagnetic property. Charge cannot be destroyed by any process and this contributes formally to the law of charge conservation.