Hi, I need all the help. These two examples do not work for me. It's not a task or anything to test, it's not in a hurry, but I'd like to see how to handle it. I apologize for the typos, I use the translator. A car weighing 1,400 kg is moving around
horizontal road from rest with acceleration
1.6 m · s −2. What is the traction of the car engine,
is the coefficient of shear friction 0.05? How much work does the engine do in 6 seconds of movement?

A locomotive weighing 12 tons moves on a horizontal track at a constant speed

34 km · h
−1. Determine the power of its engine,

if the coefficient of shear friction is between

wheels and rails 0.1.

thank u all!​

Part f - example: finding two forces (part i) two dimensional dynamics often involves solving for two unknown quantities in two separate equations describing the total force. the block in (figure 1) has a mass m=10kg and is being pulled by a force f on a table with coefficient of static friction îľs=0.3. four forces act on it: the applied force f (directed î¸=30â above the horizontal). the force of gravity fg=mg (directly down, where g=9.8m/s2). the normal force n (directly up). the force of static friction fs (directly left, opposing any potential motion). if we want to find the size of the force necessary to just barely overcome static friction (in which case fs=îľsn), we use the condition that the sum of the forces in both directions must be 0. using some basic trigonometry, we can write this condition out for the forces in both the horizontal and vertical directions, respectively, as: fcosî¸â’îľsn=0 fsinî¸+nâ’mg=0 in order to find the magnitude of force f, we have to solve a system of two equations with both f and the normal force n unknown. use the methods we have learned to find an expression for f in terms of m, g, î¸, and îľs (no n).

If the ama of the inclined plane below is 2, calculate the ima and efficiency. ima = efficiency =

In a heat engine if 1000 j of heat enters the system the piston does 500 j of work, what is the final internal energy of the system if the initial energy was 2000 j? 1. write the equation 2.list out your known variables 3.plug the numbers into the equations 4.solve 5.write your solution statement that includes initial energy and final