A weight of 10 N hangs motionless from a spring. The spring is stretched 0.286 m from its original length. What is the force constant for the spring?  1 2.8 N/m  2 22 N/m  3 35 N/m  4 43 N/m

Q: Figure shows a block of mass m resting on a 20° slope. The block has coefficients of friction μ =…

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Q: 7. A 225-kg crate is pushed horizontally with a force of 710 N. If the coefficient of friction is…

A: According to the given data mass of the crate=m=225kg Applied force =F=710N Friction coefficient…

Q: A Carnot heat pump draws heat from the outside to keep your house at temperature Th by providing…

A: Efficiency = (Qh-Qc) / W where Qh is the heat provided to the house, Qc is the heat pulled from the…

Q: The electric field in an xy plane produced by a positively charged particle is 6.20(6.61 +6.3) N/C…

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Q: Part B - An object's initial velocity is 1.43 m/s and it speeds up with a constant acceleration…

A: B) Write the third kinematic equation and substitute the corresponding values to calculate the final…

Q: A cavity with two fixed ends has a length of 2.0 m. The tension in the string of the cavity…

A: length = l = 2 m velocity = V = 100 m/s

Q: A swimmer heading directly across a river 400 m wide reaches the opposite bank in 3 min 20 s. She is…

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Q: Problem 2: The figure at the right shows a charge, Q, near a dipole that contains unbalanced charges…

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Q: An electric field of 26000 N/C points due west at a certain spot. What is the magnitude of the force…

A: The strength of an electric field (E) at any point is defined as the electric force (F) exerted per…

Q: In the simulation, the length and orientation of the blue and yellow vectors can be changed by…

A: Given, Length of blue vector = 4.47 Length of yellow vector = 4.12 The length of resultant of two…

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

A: Given The linear charge density, λ=1.49 μC/m The distance is R=46.2 m

Q: A vertical dam on a large lake is 30 ft tall and 60 ft wide, and the water level is 3 ft below the…

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Q: Two forces meet at a point. Use the graphical technique (vector triangle) to find the resultant…

A: According to the question two forces are given F1=150kN     at 22 deg with horizontal F1=110kN  at…

Q: If the speed of light in air is 3.0 × 108 m/s. Find the speed in glass of refractive index of 1.52

A: Spees of light in any medium = speed in air/ refractive index of medium. Here, speed in air= 3×108…

Q: Two positive charges, each 7.7 microcoulombs (µC), are placed around a hollow, uncharged, perfect…

A: Write the expression for the electrostatic force on the left charge. F=kqlqrd2 Here, k is Coulomb's…

Q: You charge a piece of aluminum foil (mass-7:37 g) by touching it to a charged rod. The charged rod…

A: Given : Magnitude of charge = q= 10μC=10×10-6C Mass of aluminum foil =m= 7.37g =7.37×10-3 kg

Q: How many joules are required to heat 189 g of water from 7°C to 46°C? The specific heat for water is…

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Q: 3. A body moves in a straight line according to this equation of motion: s(t) = 10t² - 4t + 8, where…

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Q: Whta is the first derivative of this : Plz explain also

A: The first derivative of a function is an expression which tells us the slope of a tangent line to…

Q: 2) a) What is 8.62 ×105s×105s in units of ks?  b)What is 0.087 s in units of ms?  c)What is 2.4…

A: Given :  a) A = 8.62 ×105 s × 105 s.  b) B = 0.087 s.  c) C = 2.4 ×10—7 s × 10–7 s.  Basic…

Q: A stone is dropped from a bridge that is 75.0 m above the water. The person waits 2.00 s after…

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Q: A 0.045 kg bullet was fired at 350 m/s into a block of wood as shown in the diagram below. Assuming…

A: According to the given data u=350m/s F=5500N m=0.045kg we need to find penetrates distance (d)

Q: An object is placed 45 cm in front of a diverging lens that has a 30-cm focal length. Where will the…

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Q: 7. What is the critical angle for light when it goes from zircon to diamond?

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Q: If the speed of light in air is 3.0 × 108 m/s. Find the speed in glass of refractive index of 1.52

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Q: 8 Determine the unknown values in the following circuit. - W 3 V=IR

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Q: In getting ready to slam-dunk the ball, a basketball player starts from rest and sprints to a speed…

A: The initial speed of the basketball player, u=0 m/s The final speed of the basketball player, v=6.4…

Q: hello what number is this i dont understand if what number is that so if its number 1 only can you…

A: 2) When the container is dropped, the initial velocity of the container at the top of the building…

Q: In the figure a nonconducting rod of length L = 8.39 cm has charge -q = -4.42 fC uniformly…

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Q: Consider an electrical circuit comprising a battery with voltage V that provides a current I through…

A: When electric current start flowing through an electric conductor then the obstruction offered by…

Q: Two point charges exert a 3.50 N force on each other. What will the force (in N) become if the…

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Q: Problem 1: Inputs: ● ● a = b = 2 m F1 F2 F3 = 350 N a) Determine the net moment about point A b)…

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Q: A particle that carries a net charge of -95.8 μC is held in a constant electric field that is…

A: Given  Charge,  q = -95.8×10-6 C  Angle with vertical, θ = 25.2o Electric field , E = 4.82 N/C…

Q: Figure (a) shows a circular disk that is uniformly charged. The central z axis is perpendicular to…

A: The electric field due to the circular disk is given by, E=σ2ε01-ZZ2+R2 Here, σ2ε0= Em E=Em1-ZZ2+R2…

Q: Two wires cross, one carrying current to the east and the other to the north. The force between the…

A: The current direction iss perpendicular to each other  We need to find force b/w wires

Q: If 6 kg of metal is heated from 14 to 21 by adding 45300 J of heat, find c (the heat capacity or…

A: Heat capacity & Specific heat capacity: Molecules of a metal possess both Kinetic and Potential…

Q: IP A 0.60-kg mass is attached to a spring with a force constant of 27 N/m and released from rest a…

A: A) When the mass is halfway to the equilbrium position, the distance will be: xf=xi2

Q: 3. The coefficient of static friction between a 40.0-kg picnic table and the ground below it is…

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Q: A motorcyclist is cornering on a curved race track. Which combination of changes of banking angle…

A: Here we need to look at centripetal acceleration, so if the speed of motorcyclistincreases then the…

Q: A very simplified model of the human eye is a single positive refractive surface with refractive…

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Q: Describe the Big Bang Theory. Include A) what it is, B)what happened , and C) at least three lines…

A: (A) The Big Bang Theory is the prevailing scientific explanation for the origin and evolution of the…

Q: What is the value of the electric field .3 m from a square piece of metal which is 2.7 km x 3 km and…

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Q: The sound level of a lamborghini's engine starting is 80.8dB. the noise level of the lamborghini…

A: Noise level of the Lamborghini driving = 120.1 dB Sound level of Lamborghini engine starting = 80.8…

Q: If the speed of light in air is 3.0 × 108 m/s. Find the speed and frequency in diamond with a…

A: Givenn=2.42c=3×108 m/sspeed in diamond =cn                                =3×108 m/s2.42…

Q: A loop of wire carrying a current of 9.60 A is in the shape of an isosceles right triangle (right…

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Q: The indicated accelerations are a₂ = 400 m/s² and a₁ = 100 m/s². What is the outward speed of the…

A: The distance traveled under the velocity-time graph is equal to the area of the velocity versus time…

Q: A physical pendulum starts moving from a position in which its center of mass is directly above the…

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Q: If light in air with a wavelength of 760 nm is incident upon a piece of quartz (n = 1.54) at an…

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Q: The figure below shows a small, charged sphere, with a charge of q = +41.0 nC, that moves a distance…

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Q: F₂ = 80 N 75° F₁ = 120 N 60° FIGURE 3-1 The figure above shows forces acting on a box. Based on this…

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Static and Kinetic Friction

Kinetic friction comes into existence when there are moving surfaces means in other words we can say that the force which comes into existing between moving surfaces is known as kinetic friction.