what is James B. Pollack contributions to physics    and what is Steven chu contributions to physics

Q: Express the quantity 254934 m in each of the following. Km Express your answer using six significant…

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Q: Current Attempt in Progress In the figure, a horizontal force of magnitude 22.0 N is applied to a…

A: Draw the free-body diagram of the book.

Q: PROBLEM # 4 Three point charges are placed at the corners of a rectangle, as shown in the figure.…

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Q: Two disks are mounted (like a merry-go-round) on low-friction bearings on the same axle and can be…

A: (a) Given: Rotational inertia of first disk I1=3.27 kg·m2 , Angular speed of first disk ω1=488…

Q: Vector A has a magnitude of 8.0 m, South and vector D has a magnitude of 10.0 m, 53° W of N. Find…

A: Given: The magnitude of vector A  is 8 m in the south direction. The magnitude of vector D is 10 m…

Q: Two point charges Q1= +40 nC and Q2= -30 nC are 100 mm apart. Point A is midway between the charges…

A: We have two charges of magnitude Q1=40 nC and Q2=-30 nC which are separated by a distance d=100 mm.…

Q: Two disks are mounted (like a merry-go-round) on low-friction bearings on the same axle and can be…

A: In this question ew have to find the angular velocities according to the given conditions. Please…

Q: Q3 a) Set up the differential equation of motion for forced oscillation and derive the condition of…

A: in this question  we determine  three different  question  answers first is about forced oscillation…

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

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Q: A 138-Newton horizontal force is exerted upon a 4.6 kg box to move it across a level surface at a…

A: Draw the free-body diagram of the object.

Q: Determine the U and Y components of the 1000-N force shown below. Y 3 1000 N 2 38⁰ X U

A: The angle made by the F=1000 N force with the x axis is , θ=tan-1(23) =33.69∘ Then the x-component…

Q: A projectile is shot from the edge of a cliff 115 m above ground level with an initial speed of up =…

A: Determine the horizontal and vertical components of the initial velocity.

Q: What is the minimum speed with which a meteor strikes the top of Earth’s stratosphere (about 43.5 km…

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Q: For the given vectors, determine the magnitude of the vector difference V₂-V₁ and the angle which it…

A: We have two vectors given by V1=10 units directed at an angle tanθ1=3/4 (from the figure) with the…

Q: Consider a very long rod, radius R and charged to a uniform linear charge density A. • Calculate the…

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Q: The pitch of a screw gauge is 0.5 mm and the head scale is divided in 100 parts. What is the least…

A: Given that- Pitch of screw gauge=0.5 mm Head scale divided in 100 parts To determine that  What is…

Q: A brass bar, 15 cm in length, is welded to an aluminum bar, 10 cm in length. Both have a cross…

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Q: Force of gravity? Weight of a block of mass 13.2 kg? take g= 10 m/s²

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Q: radius The figure shows a uniform disk that can rotate around its center like a merry-go-round. The…

A: In this question we have to find the value of Force F2. Please give positive feedback if the answer…

Q: Determine the U and Y components of the 1000-N force shown below. Y 3 1000 N 2 38⁰ X

A: Angle between 1000N force and x axis  = tan-1(2/3) = 33.69° U component = 1000×cos(33.69°+38°) =…

Q: 1. Which of the following statement is wrong: Specific heat of a material a. Extrinsic property b.…

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Q: Your answer is partially correct. app In the figure, a constant horizontal force F of magnitude 7.0…

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Q: . A long straight wire is carrying a current of 2.4 A in a region where the magnetic field is…

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Q: determine the attraction force between 2 objects of 5kg each one, while being separate at a 15cm…

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Q: orce F = (7.26 N )i^— (7.05 N )Ê. acts on a pebble with position vector ♬ = (5.76 m )j^~– (3.10 m ),…

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Q: 14. This is the conductor's property due to which it passes current: a. conductance b. inductance…

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Q: Calculate its height after 3 sec.

A: Given data,  Calculate its height after 3 sec?  Where,   Speed of the iron ball vertically upward…

Q: Distinguish between radiative- and non-radiative transitions and give an example of  each.

A: radiative transition :-  Radiative transitions involve the absorption of a photon, if the transition…

Q: the zero error of the vernier calipers.

A: Given,  10 divisions vernier scale are equal in length,l= 9 mm When two jaws are in contact, the…

Q: A 3,500kg pickup truck is traveling eastward at a velocity of 15.0m/s when it collided into the rear…

A: Correct answer : The velocity of the car just after the collision is 20.67 m/s.

Q: cargo of 2 Kg on a frictionless ramp is connected (by a cord that runs over a pulley) to a spring of…

A: In the given question, Mass of cargo (m) = 2 kg spring constant (k) = 120N/m The angle of…

Q: A laser emits light at a wavelength of 678 nm. How many photons are required to emit 1 joule of…

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Q: (II) Suppose that you have a 9.0-V battery and wish to apply a voltage of only 3.5 V. Given an…

A: let's calculate R across 3.5 V   use: V = (R/Rtotal)*Vtotal 3.5 = (R/Rtotal)*9.0 R/Rtotal = 3.5/9 =…

Q: A luge and its rider, with a total mass of 82.0 kg, emerge from a downhill track onto a horizontal…

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Q: An object with initial temperature 150°C is placed outside, where the temperature is 35°C. Its…

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Q: Physics Please solve the following question and include a section showing the formulas that would…

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Q: Part 5 of 5 We can use our new diameter to determine the resolving power of this telescope. x = 2.06…

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Q: An airplane is heading due south at a speed of 600 km/h. 0= 7.61 east of south Submit All attempts…

A: Given Speed of an airplane, Vairplane=600 km/h Vector magnitude and direction Vectors can be…

Q: A basketball is shot from an initial height of 2.40 m (Figure 1) with an initial speed v0 = 11 m/s…

A: Determine the horizontal and vertical components of the initial velocity.

Q: A pebble is thrown is vertically upwards with a speed of 25m/s. How will it go after 2 sec ? Take…

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Q: 1. 0.065 kg object is attached to a spring is a spring constant of Joo N/m. The Other end of the…

A: Given:- m= 0.065 kg K= 100 N/m

Q: If 0 0 M₁ 2? 120° 1 in the figure = 55°, how about Mz

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Q: A student drives his car 6.0 km North before making a right-hand turn and driving 6.0 km to the…

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Q: How will it go after 5sec ?

A: Given data, Speed of the volleyball,v= 30 m/s Calculate the height of the volleyball ?After time,t=…

Q: Two fishermen are exerting a force of 200 N on a paddle while rowing in the middle of a lake. If the…

A: Given: The applied force due to two fishermen is 200 N. The distance of the hands of the fisherman…

Q: Suppose your car was mired deeply in the mud and you wanted to use the method illustrated in the…

A: In this question we have to find the magnitude of Force. Please give positive feedback if the answer…

Q: Current Attempt in Progress In the figure here, a solid brass ball of mass 0.177 g will roll…

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Q: A girl sitting on a L = 2 m long swing is pulled backward by her father, making an angle of 32…

A: Given Data: L=2 m  θ = 32 degrees h=L(1-cosθ)

Q: Problem 1: Solve the Simple Harmonic Oscillator?

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Q: A 2.5-kilogram mass rotates at a fixed 4.0 rev/sec in a 60 cm-diameter circle. Calculate the…

A: In this question we have to find the centripetal force and acceleration. Please give positive…