Problem 2. If all the forces other than gravitation are switched off, calculate the time taken by the Earth for free-fall due to self-gravity. Hint: The mean density of the earth is \rho E = 5.5 g cm-3

Q: 4) A diffraction grating with 1.15x105 grooves/m_is illuminated by 654 nm light. Then, the set-up is…

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Q: A couch is on a ramp that is inclined 21° to the horizontal, as shown. To prevent the couch from…

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Q: Three charged particles are located at the corners of an equilateral triangle as shown in the figure…

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Q: Problem 8: A boom with a mass of 101 kg is held in static equilibrium as shown in the figure. A mass…

A: Mass of boom =101kgMass of block M = 168 kgThetha = 52 degree.

Q: Q (-3.0 m, 0) y A B (0, +4.0 m) Ở (3.0 m, 0) (0.-6.0 m) Each Q shown is 60 μC. What work is required…

A: We have to find work done  i.eW=q∆V

Q: The length 3.76 mm is multiplied by 0.0232 mm. The appropriately rounded product is how many square…

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Q: Determine the mass moment of inertia of the flywheel shown in the diagram below if the material is…

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Q: The drawing shows an equilateral triangle, each side of which has a length of 1.52 cm. Point charges…

A: since the net force on  charge is vertically downward, the charges  must be negative and have same…

Q: Ha (femt = 4.57 x 1014 Hz) is emitted from the surface of a neutron star. Its radius is 1.23 x 104 m…

A: We know that  line has a typical wavelength of 656.46 nm in vacuum.Now, according to the question,…

Q: An 6-kg mass is attached to a spring hanging from the ceiling and allowed to come to rest. Assume…

A: As  per data

Q: Assuming that the escape speed of Mars is 4.17 km/s, what is the log10 of the number of molecules in…

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Q: car is moving along the x-axis and its velocity, V., varies with time as shown in the figure. If x=…

A: A car is moving along the x-axis and its velocity, vx, varies with time as shown in the figure. If…

Q: 5. Find the final temperature of 100 g copper block that is heated to a temperature of 500° C and…

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Q: Q7). A soft tennis ball is dropped onto a hard floor from a height of 2,85 m and rebounds back to a…

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Q: Problem 9: A very large sheet of very long wires lie parallel to the y-z plane with the current…

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Q: Consider a configuration with four point charges located at the corners of a square (see figure),…

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Q: A stars spectrum emits more radiation with a wavelength of 700.0 nm than with any other…

A: GivenA star's spectrum emits more radiation with a wavelength of 700.0 nm than with any other…

Q: In the figure here, three particles of mass m = 0.030 kg are fastened to three rods of length d=…

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Q: A double concave lens has surface radi of 31.4 cm and 28.3 cm. T Part A What is the focal length it…

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Q: .A 50.0 kg boy sits on a 40.0 kg sled which is resting on the ice of a pond (zero coefficient of…

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Q: The velocity of a 5.00 kg particle is given by 7 = (6.00tî + 5.00t² ĵ) m/s, with time t in seconds.…

A: Solution     Given data Mass m = 5.0 kgVelocity of particle v→=(6ti^+5t2j^)m/sMagnitude of force…

Q: A diver takes a deep breath at the surface of water where the pressure is 1 atm, filling his lungs…

A: For first casePressure P=1 atmVolume V=4.3 LFor second case Pressure P'=0.33 atmVolume…

Q: Two couples act on the frame. (Figure 1) Figure 100 lb 30% 13 ftd-3f1-B A ve 30⁰ 100 lb 150 lb 4 ft…

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Q: Two point charges lie on the $x$ axis. A charge of +9.96 $\mu C$ is at the origin, and a charge of…

A: The electrical characteristic of particles like electrons and protons is described by the…

Q: An object undergoes constant acceleration. Which of the following statement(s) MUST be TRUE? A The…

A: Aceeleration is defined by change in velocity in a short period of time i.e when an object moves…

Q: A funny car accelerates from rest through a measured track distance in time 57 s with the engine…

A: Given,The constant power, The time, The differential amount, The differential time,

Q: In the figure a current i = 19 A is set up in a long hairpin conductor formed by bending a wire into…

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Q: It is said that Galileo discovered a basic principle of the pendulum- that the period is independent…

A: Time Length Angle Velocity maximum

Q: A satellite has a mass of 6286 kg and is in a circular orbit 4.37 x 105 m above the surface of a…

A: In the circular orbit of a satellite, a centripetal force is provided by the gravitational force…

Q: (from Ohanian, p 542) A submarine suddenly breaks up at a depth of 142 m below sea level. The air in…

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Q: 4(x) =

A: Now here given the values that,a=7.50cm=0.075mProbability 87%=0.87So now we get from normalization…

Q: 2. Estimate your own luminosity (in terms of Stefan-Boltzmann law). Express the result in both…

A: The luminosity of a body is the total power radiated by it

Q: A pair of long, rigid metal rods, each of length L, lie parallel to each other on a perfectly smooth…

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Q: Two planes take off at the same time from an airport. The first plane is flying at 280 miles per…

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Q: Fis the only force acting on the object of mass m. The force has a magnitude of B and acts at the…

A: According to the question, no force is exerted on the body of mass m except F. The component of…

Q: A 1100N uniform boom is supported by a cable perpendicular to the boom, as seen in the figure below.…

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Q: The position of a particle is given by the following equation: x = (2 m/s³) t³+ (2.5 m/s) t where t…

A: The position of a particle is given byx(t)=2t3+2.5t where t is in secondsNow the velocity of the…

Q: and the 10.64 Figure P10.64 The mechanism shown in Fig. P10.64 is used to raise a crate of supplies…

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Q: Four charges, qa, qb, qc, qd are fixed at the corners of a square. A charge q that is free to move…

A: Based on the description of the question there can be as many as six different cases or scenarios.In…

Q: Two tugboats pull a disabled supertanker. Each tug exerts a constant force of 2.20×106 N, one at an…

A: We will use the concept of work done

Q: A 0.32-kg skeet (clay target) is fired at an angle of 28° to the horizon with a speed of 25 m/s.…

A: Range ,NowAfter collision skeet moves along horizontally at, Vertical velocity of pellet is,Now…

Q: An airplane has a mass of 3.61 x 104 kg and takes off under the influence of a constant net force of…

A: Given Data: The mass of the airplane is M=3.16×104 kg.The airplane takes off under the influence of…

Q: A cosmic ray electron (m= 9.1*10-31 kg) moves at 7.13*106 m/s perpendicular to the Earth's magnetic…

A: Mass of electron me = 9.1 × 10-31 kg Velocity of electronve = 7.13 × 106 m/s Strength of Magnetic…

Q: 5) A horizontal wire holds a uniform ball of mass m, and radius R in place on an inclined plane with…

A: Giventhe mass of the ball is mthe radius of the ball is RThe angle of the inclined plane is Need to…

Q: You have enrolled in a scuba diving class and while swimming under water in a nearby lake you look…

A: i=24°

Q: Problem 1: One end of a spring with a spring constant of 159 N/m is held firmly in place, and the…

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Q: In exercising, a weight lifter foses 0.107 kg of water through evaporation, the heat required to…

A: Given-the amount of water the weight lifter loses, the work done in lifting weights, the latent heat…

Q: In the circuit given below, the battery potential difference Vis 10.0V and each of the seven…

A: The battery potential difference V is 10 volts.The each of the seven capacitor has capacitance