The greater the number of lines on a diffraction grating of a given size, A) the greater the range of wavelengths that can be diffracted B) the smaller the range of wavelengths that can be diffracted C) the greater the distance between the bright fringes produced D) the smaller the distance between the bright fringes produced E) the less clear the diffraction pattern will be

Ⓒ Macmillan Learning An engineer wants to design an oval racetrack such that 3.20 × 10³ lb racecars can round the exactly 1000 ft radius turns at 96 mi/h without the aid of friction. She estimates that the cars will round the turns at a maximum of 175 mi/h. Find the banking angle necessary for the race cars to navigate the turns at 96 mi/h without the aid of friction. 0 = This banking and radius are very close to the actual turn data at Daytona International Speedway, where 3.20 × 10³ lb stock cars travel around the turns at about 175 mi/h. What additional radial force is necessary to prevent a race car from drifting on the curve at 175 mi/h? radial force: N

A commercial airplane is coming in for a landing. Just before it hits the runway it is moving at 76 m/s. The plane has a mass of 20,000 kg. The runway is 1.6km long and, obviously, the airplane needs to be stopped before it reaches the end of the runway. How large is the braking force the airplane needs to stop safely before the end of the runway?

Number 5

i'm doing chapter 4 problem 12p in the college physics 11th edition text book. On bartleby it says that "total force along the x axis is  fx= f1sin30degrees - f2sin10degrees" my question is that wouldnt it be the cosine since it is the x axis and not sin?? i put a image below

answer in 20 mins!!!

A 756 N person travels in his vehicle through a deep circular-shaped dip in the road. When the vehicle passes through the lowest point of the 50.0 m dip, the seat exerts an 1110 N force on the person. Determine the speed of the vehicle at this point.

q1 = -4.60 x 10-6 C, q2 = +3.75 x 10-5 C, and 93 = -5.30 x 10-6 C. Find the y-component of the %3D net force on q2. Include the correct + or - sign to indicate direction. q1 0.283 m 0.200 m 45.00 0.200 m q2 93 (Make sure you know the direction of each force!) y-component (N) Enter

17. A child decides to take her cat on a walk, but the cat does not cooperate. The child pulls on the 2.5 kg cat with force of 20 N in a direction that is 30 degrees above horizontal, and the cat resists being pulled forward with a horizontal force of 15 N. How much force is the child pulling with in the horizontal direction (the direction the cat will move)? Your answer: 10 N O 17 N O 20 N O 600 N