High-speed train pulls out of the lyons station and is accelerating uniformly to its cruising speed. inside one of the cars, a 3 n digital camera is hanging from the luggage compartment by a light, flexible str that makes a 12 angle with the vertical. what is the acceleration of the train? 3.06m/s 2.08m/s 5.00m/s 4.09m/s

b

Fnet = T  

Fx = m*ax  

Fy = m*ay  

Fy = T * cos12º = m * g  

T * 0.97 = 3 * 9.8  

T = 3*9.8/0.97  

= 30.057 N  

Fx = m*a = T * sin12º

Fx = 3 * a = 30.057 * 0.24  

a = (30.057*0.208)/3  

≈ 2.083 m/s²

what experimental evidence led scientists to change from the previous model to this one?

a few of the positive particles aimed at a gold foil seemed to bounce back.

the colors of light emitted from heated atoms had very specific energies.

experiments with water vapor showed that elements combine in specific proportions.

cathode rays were bent in the same way whenever a magnet was brought near them.