Question 4 refers to a horizontal massless rope attached to a 23.0 kg box on a horizontal surface as shown below: If the box is now moving with an acceleration of 2.50 m/s² when a tension of 120 N is applied to the rope, what is the coefficient of kinetic friction between the box and the surface?

Q: In the figure a "semi-infinite" nonconducting rod (that is, infınite in one direction only) has unif...

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Q: what is vector c

A: A vector has both magnitude as well as direction.

Q: An object of mass 2 kg collides with an object of mass 1 kg that is at rest, as shown in the figure....

A: given - mass of object 1 (m1) =2kg mass of object 2 (m2) =1kg As object 2 is in rest initially , ini...

Q: A tungsten wire in a vacuum has length 26.0 cm and radius 6.00 mm. A potential difference is applied...

A: According to guidelines we need to solve only first three sub-part kindly repost other parts in the ...

Q: A working student works at a pub during weekends. The assigned task to him is to fill drinks for cus...

A: Work done by student: W1=F.s=8.2N×50100m=4.1 Joules   Work done by friction(it will be negative beca...

Q: 10. A rifle fires a bullet with speed of 800 m/s into a giant slab of butter weighs 8 kg on a fricti...

A: Given data: initial speed of bullet u = 800 m/s weight of bullet m = 40 g initial speed of butter sl...

Q: Find the emissivity of a man whose skin has area of 1.7 m2 subjected of intense solar radiation inci...

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Q: Starting from rest, a bullet train acquires a velocity of 200 km/h during 20 seconds. What is the ac...

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Q: Two unlike capacitors of different potentials and charges are placed in parallel. What happens to th...

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Q: -800 Dimensions in mm F1 600 F2 F3 900 -560430- -480- What is the y component of F2=427 N?

A: Given,F2 = 427 N

Q: A charged ring with charge Q = 644 nC and radius R=0.67 m is placed in a tank of water. What is the ...

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Q: Point charges q1 = 50 µC and q2 =-25 µC are placed 1.0 m apart. What is the force on a third charge ...

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Q: 1. Given: Vector D, with horizontal and vertical components: 20 in and 30 in, respectively. Vector D...

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Q: 5. Consider g on a bearing of 110° with g = 11 and h on a bearing of 245° with h= 20. If i = g+h the...

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Q: Vector 425 km/h S of E velocity x-component y-component

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Q: Angle D = 23 degrees Solve for the magnitude of the resultant of the two forces.

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Q: SOlVE THE FOtio WING PROB LEMS: 2) A STEEL BAII DROPpED FROM A TOWER STRIKES THE GROUND in 3 See FIH...

A: Part (2): Given: The initial velocity of the ball is 0 m/s. The time taken by the ball to reach the ...

Q: The resultant of two equal forces A and B are 60 Ibs. If it makes an angle of 30°with A, find the ma...

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Q: You have been told that a fire is expected to spread at a rate of 150 feet per minute. What is the r...

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Q: A Ferris wheel rotates at a maximum angular speed of 1 revolution every 2 minutes. The angular speed...

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Q: 1) A WEIGHTIS DROPPED FROM A TOWER 640fH hign, In how many seconds and With what tveļoaty will.it' h...

A: Part (1): Given:The height of the tower is 640 ft. The initial velocity of the object is 0 ft/s.

Q: Problem: Given the a-t diagram, plot the V-t and S-t diagram. At t=0; V=0; S=0

A: Given a(t) = 4           for 0≤t≤2mt+n for 2≤t≤4 Here we write down a linear equation for second par...

Q: Gamma-ray busters are objects in the universe that emit pulses of gamma rays with high energies. The...

A: Relation between wavelength and frequency is as follows λ=Cf where λ = wavelength of given rayC= veo...

Q: 9. Will took a 45.0g cube of solid H20 (an ice cube) out of the freezer at -5.00°C and put it on the...

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Q: If a man ran @ 3m/s for 10s and then -3m/s for 10s more.... A.What is the distance traveled? B. Aver...

A: Concept Scalar and vector quantities. Scalar quatities are independent of direction whereas the vect...

Q: The position of a bird in the xy-plane is given by f = (4.0m-xt?)i+ Btj where x= 2.5 m/s2 and B = 5 ...

A: Position of a bird in the x-y plane is given by :r→ = (4 m - αt2)i^ + βt j^ where α = 2.5 ms2β = 5 m...

Q: A block weighing 200 N rests on a plane inclined upward to the right at a slope of 4 vertical to 3 h...

A: Here it is given that, a block weighing 200 N rests on a plane inclined upward to the right at a slo...

Q: Define centripetal force. Can any type of force (for example, tension, gravitational force, friction...

A: A centripetal force is a force that makes a body follow a curved path. Its direction is always perpe...

Q: ) A BALL IS DROPPED FROM REST AT A HEIGHT OF 50m above the around A.) What is the Speed just Before ...

A: According to question we need to find time  and final velocity?

Q: Which of the following v,-t graphs best matches the motion shown in the motion diagram? A. В. C. D. ...

A: vx=∆x∆t     ...(1)   From the figure we can see that between two consecutive dots ∆x is gradually d...

Q: The sun emits white light, and yet we have all noticed that it looks a bit yellow/red when you see i...

A: When white sunlight ( composed of all the seven colours ) reaches our earth and strikes the atmosphe...

Q: Compute for the magnitude of the electric field that encloses a net charge of 2 micro Coulombs. Sel...

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Q: Position of a particle moving along the x-axis varies in time according to the following expression ...

A: Given data:  Position as function of time xt = -2.0 ms3t3 + 6.0 mst - 2m Required: The average veloc...

Q: 12. A stone is dropped into a deep well and is heard to hit the water 4.41 s after being dropped. De...

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Q: Centripetal force of Ferris wheel and draw diagram

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Q: 3. To help workers in your project site move dozens of equipment weighing 60 kgs to a height of 2.2m...

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Q: If the tube length is 1.00+0.05m, the magnet takes 2.5±0.1 s to fall through the tube. What is the t...

A: Given that:- Length of tube=(1.0+-0.05)m  Time=(2.5+-0.1)sec  

Q: 2. Two point charges attract each other with a force of 3.0 N. What will be the force if the distanc...

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Q: 5. Rocket-powered sleds are used to test the human response to acceleration. If a rocket-powered sle...

A: Given data:   Initial velocity (Vi) = 0 m/s Final velocity (Vf) = 448 m/s Time (t) = 2.83 s Required...

Q: In Exercise 12.4 of your book, University Physics 15th edition (see End of the Chapter 12 section), ...

A: Given that:- Radius of the neutron star=26.965km

Q: A solid ball is rotated by applying a force of 4.9 N tangentially to it. The ball has a radius of 14...

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Q: An object having a specific gravity of 7.3 is placed in a cylinder containing mercury with a Gs = 13...

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Q: A ball is thrown with an upward velocity of 5 m/s from the top of a 10-m high building. One second l...

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Q: 38. When a 5-kilogram mass is lifted from the ground to a height of 10 meters, the gravitational pot...

A: when the object from its initial position is lifted by height h on earth then the gravitational pote...

Q: What is the potential difference between the plates of a 3.3-F capacitor that stores sufficient ener...

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Q: A man runs at a constant 4m/s for 40s and then runs @ 8m/s back to his starting position. A. Total t...

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Q: A bullet shot straight up returns to its starting point in 9 s. What is the initial speed of the bul...

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Q: A certain wire has a diameter of 0.55 mm and contains 8,5 x 10^28 free electrons/m^3.If the wire has...

A: Diameter of wire = 0.55mm no. Of electron = 8.5×1028 free electron/m3 Current= 3.1 A Area A =πR2= 3....

Q: Find the pressure at 13 KM in standard atmospheric conditions. *

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Q: You are given the dynamics equations that are used to solve a problem: T – 0.20n – (20 kg) (9.80 m/s...

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Newton's Second Law

Newton’s laws of motion describe the relationship between the motion of an object and forces acting on it. Newton’s law of motion has two types as follows: