80. A driver slams on the brakes, leaving 88.0-m-long skid marks on the level road. The coefficient of kinetic friction is estimated to be 0.480. How fast was the car moving when the driver hit the brakes? Example 6-11

Q: A bicycle and rider going 12 m/s approach a hill. Their total mass is 57 kg. (a) What is their…

A: Given Data : speed of the rider, v = 12 m/s total Mass of the rider and the bicycle, m = 57 kg Since…

Q: You are working in an optical research laboratory. One of the pieces of experimental apparatus…

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Q: An x-ray tube is operated at 48900 V. Calculate the minimum wavelength of the radiation emitted by…

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Q: The ammeter shown in the figure below reads 2.68 A. Find the following. 7.00 Ω (a) current I₁ (in A)…

A:

Q: Two builders carry a sheet of drywall up a ramp. Assume that W = 1.9 m, L = 3.3 m, theta = 19.0°,…

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Q: Determine the forces in the wires AB and BC. Express your answer to three significant figures and…

A:

Q: Iron has a density of 7.874 g/cm3. What is the mass of a rectangular block of iron with dimensions…

A: Density of block is ρ=7.874 g/cm3 Dimensions of block are 3 cm, 4 cm, 5 cm Note: 1 kg=1000 g Find:…

Q: This time we have a non-rotating space station in the shape of a long thin uniform rod of mass 7.51…

A: here, the mass of uniform rod , m1 = 7.51 * 10^6 kg the length of rod , l = 915 m mass of each probe…

Q: At a given instant, the blood pressure in the heart is 1.4 x 10^4 Pa. If an artery in the brain is…

A: Blood pressure(P1)=1.4×104 Pawe need to find pressure in artery(P2) density of blood(ρ)=1060 kg/m3h…

Q: A laser beam is shone on a mirror as indicated below. The angle of incidence is 50 degrees.…

A:

Q: May I know why the initial position of the officer is equal to 0 ?

A: clearly written in the question " she passes a parked motorcycle police officer".

Q: A simple pendulum is constructed from a short metal rod of the mass mand of the length / suspended…

A: The mass of the rod = m The length of the rod = l The current flowing through the rod = i

Q: A long solenoid that has 1 010 turns uniformly distributed over a length of 0.390 m produces a…

A: For a solenoid the number of turns is N=1010 The length of the solenoid is L=.390 m And the magnetic…

Q: Calculate the potential difference between the wingtips of an aircraft with the wingspan of 64 m…

A: Given Data: Length of the wing (l) = 64 m.Speed of the aircraft (v) = 709 km/h = 196.94 m/s.Angle…

Q: One of the inevitable consequences of aging is a decrease in the flexibility of the lens. This leads…

A:

Q: A cube of edge length = 3.20 cm is positioned as shown in the figure below. A uniform magnetic field…

A: Edge length l=3.20cm=3.20×10-2m Magnetic field B→=(6.1i^+4.0j^+3.0k^)

Q: What is the equivalent resistance for the resistors in the figure above?

A:

Q: Example 12.11. Radioactive isotope 18 F has a half-life of 110 min. How much time does it take for…

A: Half life of radioactive isotope of 18 F , t1/2=110 min  To determine time does it take for 99% of…

Q: E A stone is dropped from the top of a tall building. After 15s of free fall, what is the…

A:

Q: We will now use energy considerations to find the speed of a falling object at impact. Artiom is on…

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Q: Calculate the maximum diffraction order observed on a screen in a two slit interference experiment…

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Q: Calculate the total electrostatic energy in the system of Figure 1 by considering all regions. P-Po…

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Q: You push on a rectangular door at the location of the knob (see diagram for top view). The door s…

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Q: A beam of light is passed through a first linear polarizing filter. A second polarizing filter is…

A:

Q: 9. The motion of a body attached to a vertical oscillating spring is given by the equation:…

A: Since you have posted a question with multiple sub parts, we willprovide the solution only to the…

Q: This time we have a non-rotating space station in the shape of a long thin uniform rod of mass 4.78…

A:

Q: The figure below shows an object (black arrow) in front of a convex mirror. How would the image…

A: From the given figure, it is noted that by the characteristics of convex lens the image will be…

Q: 3. A flat piece of glass covers the top of a vertical cylinder that is completely filled with water.…

A:

Q: We see color because visible light represents wavelengths that are absorbed. True     False

A: A typical human eye can respond to wavelengths ranges from 400 nm to 700 nanometers. Visible light…

Q: A mass of 8.5 kg is attached to a spring with the spring constant 30.0 N-m¹ and is placed on a…

A: spring constant (k) = 30 Nm mass (m) = 8.5 kg compression (d) = 0.03 m

Q: In the figure, four long straight wires are perpendicular to the page, and their cross sections form…

A: See below

Q: A 26-turn circular coil of wire has diameter 0.91 m. It is placed with its axis along the direction…

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Q: Describe your approach to calculating the value of an electric field a certain distance away from…

A: To calculate the value of the electric field at a certain distance away from two electric charges,…

Q: A 677-nm-thick soap film (nfilm = 1.33) rests on a glass plate (nglass= 1.52). White light strikes…

A: Given Data: Thickness of the soap film (t) = 677 nm = 677×10-9 m.Refractive index of the film…

Q: A particle is traveling in a straight line. Its position at time t in seconds is given by s(t) = 8√t…

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Q: This time we have a crate of mass 26.9 kg on an inclined surface, with a coefficient of kinetic…

A:

Q: 1) What does it mean to measure sound in decibels? 2) Explain how Hooke's law is related to simple…

A: Sound intensity: It is a measure of the amount of sound energy passing through a particular area per…

Q: 13. Consider the electric circuit shown, consisting of a 12 V battery and three capacitors connected…

A: The supply voltage is 12 V. The connection of the capacitors 10 μF and 5 μF is in series. The…

Q: Calculate the escape velocity to an orbit of 393 km height from a planet with the radius of 2000 km…

A: Mass of object =393kg Radius =2000km Density =3400 kg.m-3

Q: 4. A tiny parasaurolophus is standing 12 cm in front of a spherical lens with a refractive power of…

A:

Q: 10. A particular jet liner has a cabin noise level of 104.⁹6 W/m². What is this intensity in…

A: Since you have posted multiple questions, we will provide the solutiononly to the first question as…

Q: Two long straight wires run parallel to one another with current flowing in opposite directions…

A: The two long straight wires are placed parallel to each other, with current in each flowing in…

Q: Vi Ve IR VRMS

A:

Q: Calculate the length of a wire currying current of 8.3 A and experiencing the force of 5 N in the…

A: Current in wire ,I = 8.3AForce on wire ,F= 5NMagnetic field ,B= 3TAngle of wire with field ,θ=30ο

Q: A bench is made by placing a 3.9 meter long plank on two legs, each 0.36 meters from one of the…

A:

Q: Using Newton's 2nd law and Hooke's law write down an expression for acceleration a of a mass m on a…

A:

Q: Calculate the length of a wire currying current of 8.6 A and experiencing the force of 5 N in the…

A: Page 1

Q: Using Newton's 2nd law and Hooke's law write down an expression for acceleration a of a mass m on a…

A:

Q: 21) A train moving with a speed of 32 m/s sounds a 140 Hz horn. What frequency is heard by an…

A: Question-21: speed of the train(Vs)=32m/s frequency of the horn(f)=140Hz speed of sound(V)=343m/s

Q: In isothermal process, is w = NKTln(v_2/v1) or w = NKTln(v_2 - v1)? w is derived form w =…

A: To derive the equation for the work done in an isothermal process.

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.