Two boxes are arranged so one is on a table and then it is connected to a second by a rope that passes over a pulley and it attached to the second box. The second box is not in contact with any surface. Box A has a mass of 90.0kg and Box B has a mass of 50.0kg. There is a coefficient of friction between Box A and the table that is 0.350. Calculate the normal force on Box A
Calculate the friction force of Box A
Calculate the tension on the rope
Calculate the acceleration of the systems

Which types of electromagnetic waves have higher frequencies than the waves that make up ultraviolet light? check all that apply. radio waves infrared light microwaves gamma rays visible light x-rays

Awater balloon launcher uses an elastic band with a spring constant of 115 n/m to use thee launcher you stretch thee band back with a balloon n it the water balloons have a mass of 1.3 kg a) if you stretch the band by 0.8 m, what elastic force will the band exert? b) with the band stretched 0.8 m, how much elastic potential energy is stored in the spring? c) if you release the band, it pushes forward. what is the kinetic energy of the balloon when it reaches the natural length of the band? d) what is the speed of the balloon when it reaches the natural length of the band?

Ineed ! using proper grammar, spelling, and punctuation, write at least one 5 sentence paragraph describing 3 ways we use the elements of the electromagnetic spectrum (ems) in our everyday lives.