Does friction always oppose motion (i.e., does it always act in the direction opposite to that of the moving object)? Does your answer change if it is static or kinetic friction? Describe a scenario for which static friction is responsible for forward motion? Use words, equations, diagrams, or all three to help you explain the physics.

Q: How can two different dog whistles operating at different frequencies be used to make sound audible…

A: Dog whistle is type of whistle, which emits sound waves in the ultrasonic range (i.e, above 20 kHz).…

Q: A m=2.30 kg mass starts from rest and slides a distance d down a frictionless incline of θ=31.4o.…

A:

Q: 0 CT F A 2.8 kg block is moved at constant speed over a surface for which the coefficient of kinetic…

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

Q: Each of the Space Shuttle's solid rocket motors burns 680,400 kilograms of propellant in 2.5…

A: Each of the Space Shuttle's solid rocket motors burns 680,400 kilograms of propellant in 2.5 minutes…

Q: If there is a standing wave on a string. What will happen if you touch the string at a node? What…

A:

Q: would appreicate an answer fot this: If a beam of photons, all with the same energy and momentum,…

A: would appreicate an answer fot this: If a beam of photons, all with the same energy and momentum,…

Q: What is the maximum force (in N) on an aluminum rod with a 0.150 µC charge that you pass between the…

A: Charge on rod is Magnetic field is Speed is Note:Find:The maximum magnetic force.

Q: The G string on a guitar is a 0.46 mm diameter steel string with a linear density of 1.3 g/m. When…

A: Given that,the G string on a guitar is  diameter d = 0.46 mm, so radius r = 0.23 mmlinear density…

Q: please help provide a definition for mirror with these following steps(slogan,expand,examples,and…

A: Slogan: Reflecting reality, revealing truth.Expand: A mirror is a surface that reflects light,…

Q: Two cables tied together at Care loaded as shown. Given: Q = 165 lb. A B 30° C Q lb. 3 4 a Determine…

A:

Q: 1. If you pull the North pole of a magnet away from a coil of conducting wire, which way will the…

A: 1) According to Lenz law. The direction of current induced in a conductor by a changing magnetic…

Q: 7. Assume a 32-µC point charge at the origin. Find the total electric 0 flux passing through the…

A:

Q: At a bottled water plant, water with a density of 1.00 g/ml passes through a pumping station where…

A:

Q: A rifle recoils from firing a bullet. The speed of the rifle's recoil is small because the: impulse…

A:

Q: Find the cue ball’s angle θ with respect to its original line of motion. This is considered an…

A:

Q: what is the magnitude of the impulse given to the ball

A:

Q: In a binary star system, the average separation between the stars is 4.0 AU, and their orbital…

A:

Q: QUESTION 2 What is the magnitude of the centripetal acceleration of a car following a curve of…

A:

Q: The wire carrying 325 A to the motor of a commuter train feels an attractive force of 4.00 ✕ 10−3…

A: GivenCurrent in the two wires are  and Force per unit length between the wires is FormulaForce per…

Q: Consider a 44.8 g of O₂ gas that follows the given PV diagram. [Answer in 3 significant figures] Cy=…

A:

Q: The figure below shows two charged particles, q; and q2, 6.00 μm apart on the x-axis. 91 and 92 are…

A: There are two charges q1 and q2 .There is a point P where we are finding net electric field.

Q: The two metal objects in the figure have net charges of +74 pc and -74 pC, which result in a 23 V…

A: a)Write the expression for the charge and substitute the corresponding values to calculate the…

Q: You have a massless spring with a relaxed length of 13.8 cm. (Draw a picture and a free body diagram…

A:

Q: A person driving on I-82 glanced at his phone to read a very important text message. When he looked…

A: Displacement S = 96.5 mFinal velocity v = 0 m/sDrag sled mass m = 3.9 kgDrag sled Force Fr = 28 N

Q: If a single circular loop of wire carries a current of 78 A and produces a magnetic field at its…

A:

Q: Question 2 When you lift an object by moving only your forearm, the main lifting muscle in your arm…

A: We know that We gave given that When you lift an object by moving only your forearm, the main…

Q: Two radio antennas separated by d = 290 m, as shown in the figure below, simultaneously broadcast…

A: The condition for a second maximum in the interference pattern is given by:Where: is the distance…

Q: The circuit of the figure shows a capacitor, two ideal batteries, two resistors, and a switch S.…

A:

Q: Absolute error- 3.53-4.00/4.00*100=

A:

Q: A boat sets sail from Amsterdam, The Netherlands, heading due north at 6.5 m/s relative to the…

A: Velocity of the boat relative to the water vb=6.5m/s Velocity of the water vw=1.50m/s 40° North of…

Q: A 2.4-kg ball falling vertically hits the floor with a speed of 2.5 m/s and rebounds with a speed of…

A: Given: Mass of the ball m = 2.4 kgTaking upward direction positive, initial velocity vi = - 2.5…

Q: In the figure the ideal battery has emf -32.6 V, and the resistances are R₁ R₂-210. Rg-R₁ Rs -9.10,…

A:

Q: A woman pushes a block of mass m = 25.0 kg up a rough plane sloped at an angle of θ = 20◦ by using…

A:

Q: The figure below shows a long straight wire just touching a circular loop carrying a current I1 =…

A: current in the circular loop in (ccw direction).Assume the radius of the circular loop is denoted…

Q: The surface charge density on a long straight metallic pipe is a. What is the electric field outside…

A:

Q: A light shines from the top of a pole 50ft high. A ball is dropped from the same height from a…

A:

Q: Sometimes, steep roads going down have a small safety road by the side that goes up, which vehicules…

A: The given values are:

Q: An electric motor running a large copier draws 2.7 kW. The motor runs 3 hours in a day. How much…

A: According to Joule's law of heating, heat developed in the conductor is,H = P×t Where,H = heat…

Q: Consider your package again: at what angle (or greater) would the driveway need to be for the…

A:

Q: Block B in (Figure 1) rests on a surface for which the static and kinetic coefficients of friction…

A:

Q: A certain aircraft has a liftoff speed of 125 km/h. What minimum constant acceleration does the…

A: Given data: Initial velocity (u) = 0 m/sFinal velocity (v) = 125 km/hDistance traveled (d) = 234 m…

Q: A 1000 kg car carrying four 80 kg persons is traveling over "washboard" speed bumps spaced at…

A: Given,Mass of the car,The four person mass,The weight of the four person,The velocity of the car…

Q: A projectile is launched with an initial speed of 40 m/s at an angle of 60° above the horizontal.…

A:

Q: A 115kg rugby player is initially running at 5.5 m/s in the + direction, but collides with a…

A: Mass of rugby player m = 115 kgInitial speed Vi = 5.5 m/ s Force F = 1.71 × 10⁴ N Time t = 5.25 ×…

Q: An AC circuit with a total resistance of 1200 Ohms has an RMS current of 0.5 Amps. The circuit wraps…

A:

Q: Consider a gas whose temperature is increased from 88 to 258 degrees Celsius. By what factor does…

A:

Q: Is KE conserved?

A:

Q: If the earth were of uniform density (same mass/volume throughout) what would the value of g be…

A: Let assume the radius of the earth is R1 = R.The half radius of the earth is .The volume of earth…

Q: QUESTION 3 A 906 kg car negotiates a 455 m radius curve at 21.8 m/s. Assuming an unbanked curve,…

A:

Q: An astronaut floating at rest in space throws a wrench in one direction and subsequently recoils…

A:

Newton’s Third Law of Motion

The horse pulls the cart and the cart pulls the horse in response as per Newton third law. So the big question is, “Don’t the two forces cancel each other? How does the cart accelerate?”