Please help!!! 12. A bureau rests on a rough horizontal surface (mus = 0.50, muk =...
A car is travelling at 20m/s on a horizontal road. The brakes suddenly are applied and the car skids to a stop in 40 s with a constant acceleration. a) Draw a free body diagram for the car? b) Write newton's second law in the vector form and project it on the reference system. c) What is the coefficient of kinetic friction between the tires and road?
question 1 A block of mass m is pulled at constant velocity along a rough horizontal floor by an applied force � as shown. What is the magnitude of frictional force? Write your answer in terms of m, g, T, or q. question 2 An 8000-N car is traveling at 12 m/s along a horizontal road when the brakes are applied. The car skids to a stop in 4.0 s. How much kinetic energy does the car lose in this...
need help on both 26 and 27 26 i need help A 25-kg box rests on a horizontal surface. the coefticient or stac ition betwweetthe Dk and the sue applied to the box, but the box does not move. What is the friction force from the surface that is exerted on the box? Record Answer Question 27 (1 point) A wild young driver is traveling at a constant speed of 56 m/s drives in a circle track that is 500...
1. An unknown mass (mı) on a rough horizontal surface is attached by a wire that passes over a massless, frictionless pulley to a 2.50kg mass (m2) as shown below. The bottom of the hanging mass is 1.50m above the floor. The system is released from rest at t-0s and the 2.50kg mass strikes the floor 0.82s later. The system is now returned to its initial position and a 1.20kg mass is placed on top of the block of mass...
please help and answer all ASAP please thank you so much Question 49 (1 point) When light travelling in glass enters glass with a higher index of refraction, the wave will be: a) partially transmitted with a change in phase b) transmitted forming a standing wave pattern in air c) reflected so as to form a node at the junction d) totally reflected at the junction e) partially reflected without a change in phase Question 38 (1 point) The charge,...