Block M = 7.50 kg is initially moving up the incline and is increasing speed with a = [09] m/s2 . The applied force F is horizontal. The coefficients of friction between the block and incline are μs = 0.443 and μk = 0.312. The angle of the incline is 25.0 degrees. a. What is the force F (N)? b. What is the normal force N (in N) between the block and incline? c. What is the force of friction (N) on the block?

Currents in dc transmission lines can be 100 a or higher. some people are concerned that the electromagnetic fields from such lines near their homes could pose health dangers. for a line that has current 150 a and a height of 8.0 m above the ground, what magnetic field does the line produce at ground level? express your answer in teslas and as a percentage of the earth’s magnetic field, which is 0.50 g. is this value cause for worry?