Consider an object of mass 10 kg on a frictionless inclined plane of 20°. a. What is the acceleration of the object?
(object sliding down an inclined frictionless surface),
b. Calculate the acceleration if a mass of 20kg is used
c. What is the acceleration of the object if the angle of inclination is 90 degrees? Explain the significance of the result

Orange juice has a lower or higher viscosity than chocolate syrup

Astudent pushes on a 20.0 kg box with a force of 50 n at an angle of 30° below the horizontal. the box accelerates at a rate of 0.5 m/s2 across a horizontal floor. what is the value of the normal force on the box? 200 n 243 n 156 n 225 n

Unpolarized light of intensity i_0=750w/m^2 is incident upon two polarizers. after passing through both polarizers the intensity is i_2=280w/m^2. (a) what is the intensity of the light after it passes through the first polarizer in w/m^2? (b) write an equation for the angle between the polarizers in terms of the initial (i_0) and final (i_2) intensities. (c) find the angle between the polarizers in degrees.