26. Find the tension in each of the three cables supporting the traffic light if it weighs 2.00 × 102 N.

Q: 30 Figure 7.11 7.21. Assume that u, = 0.2 in Fig. 7.11. What is the acceleration? Why did you not…

A:

Q: ••27 In Fig. 27-40, the resis- tances are R, = 1.0 n and R, = 2.0 0, and the ideal batteries have…

A: As given, The resistor, R1=1 Ω The resistor, R2=2 Ω The emf voltage, ε1=2 V The emf voltage, ε2=ε3=4…

Q: Does the dot product of two vectors have direction as well as magnitude? yes no

A: No  they only have magnitude but no direction.

Q: Use Newton's Second Law to write an equation for each of the free body diagrams you drew in Question…

A: Total acceleration = a F1 = M1g F2=M2g Here M1 and M2 are masses of the blocks.

Q: A 20 ft long cable hangs from a pulley system located on the roof of a tall building. Set up an…

A: Given the length of the cable is 20 ft and the density of the cable is 1.5 lb/ft.

Q: A particular nucleus of the element plutonium contains 94 protons and 150 neutrons. What is the…

A: Given: The number of protons is 94 protons in the nucleus. The separation between nucleus and…

Q: Find the work done by the vector field F = (- 3z, 4y, - x) in moving an object along C in the…

A:

Q: An object with m= 27 g is hanging, without moving from a vertical spring extended by 19 cm.…

A:

Q: An electric field of magnitude 560 N/C is applied along the x. Calculate the Electric flux through a…

A: “Since you have asked multiple questions, we will solve the first question for you. If you want any…

Q: 3) You are the lucky recipient of an awesome summer internship for a start-up company offering to…

A: a. Travel time The approximate travel time of Amtrak is 9 hours 30 min over 350 miles with speed of…

Q: A single frictionless roller-coaster car of mass m= 750 kg tops the first hill with speed ve 15 m/s…

A: Mass of car m = 750 kg Initial Speed of car u = 15 m/s Initial height h = 40 m gravitational…

Q: Find the work done by the force field F(x, y, z) = (y + z, x + z, x + y) on a particle that moves…

A:

Q: 2. Use the head-to-tail method, as shown in the previous example, to find the resultant force acting…

A: Solution: 1) The diagram of the resultant force is as follows.

Q: 7. A small block of mass m starts from rest and slides along a frictionless loop-the-loop as shown…

A: The position of the small block is shown below.

Q: How much power is needed to lift a 750 kg elephant 14.3 m in 30.0 seconds?

A: Given data:  Mass (m) = 750 kg Height (h) = 14.3 m Time (t) = 30.0 s Required: Power (P)

Q: Nuclear Physics: In nuclear fusion, two atomic nuclei can merge to form new elements. Atomic nuclei…

A: Given: The mass of each nucleus is m=1.8×10-26 kg. The radius of the nucleus is r=2.3×10-15 m. The…

Q: A particle moves in the xy plane from the origin to a point having coordinates x=7 m and y=4 m under…

A:

Q: Question 23 Two frisky otters slide down frictionless hillsides of the same height but different…

A: height of hill for both the otters = h θ1 = 30oθ2 = 60oLet the mass = m

Q: Determine the magnitude of force P to move block B

A: Solution- Case-1 We consider slipping between block A and block B.

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.