Questions from College Physics

Q: A disk rotates with constant angular acceleration. The initial angular speed

A disk rotates with constant angular acceleration. The initial angular speed of the disk is 2.0π rad/s. After the disk rotates through 10.0π radians, the angular speed is 7.0π rad/s. (a) What is the...

Q: (a) What would be the maximum intensity of the light

(a) What would be the maximum intensity of the light falling on the screen if only one slit were open? (b) Find the wavelength of the light.

Q: A “blink of an eye” is a time interval of

A “blink of an eye” is a time interval of about 150 ms for an average adult. The “closure” portion of the blink takes only about 55 ms. Let us model the closure of the upper eyelid as uniform angular...

Q: Instead of an antireflective coating, suppose you wanted to coat a

Instead of an antireflective coating, suppose you wanted to coat a glass surface to enhance the reflection of visible light. Assuming that 1 < ncoating < nglass, what should the minimum thickness of t...

Q: A lawyer is on his way to court carrying his briefcase.

A lawyer is on his way to court carrying his briefcase. The mass of the briefcase is 5.00 kg. The lawyer realizes that he is going to be late. Starting from rest, he starts to run, reaching a speed of...

Q: A flywheel of mass 182 kg has an effective radius of 0

A flywheel of mass 182 kg has an effective radius of 0.62 m (assume the mass is concentrated along a circumference located at the effective radius of the flywheel). (a) How much work is done to bring...

Q: A grating in a spectrometer is illuminated with red light (λ

A grating in a spectrometer is illuminated with red light (λ = 690 nm) and blue light (λ = 460 nm) simultaneously. The grating has 10 000.0 slits/cm. Sketch the pattern that would be seen on a screen...

Q: A beanbag is thrown horizontally from a dorm room window a height

A beanbag is thrown horizontally from a dorm room window a height h above the ground. It hits the ground a horizontal distance h (the same distance h) from the dorm wall directly below the window from...

Q: An airplane flies on a level path. There is a pressure

An airplane flies on a level path. There is a pressure difference of 500 Pa between the lower and upper surfaces of the wings. The area of each wing surface is about 100 m2. The air moves below the wi...

Q: A 0.185 kg spherical steel ball is used in a

A 0.185 kg spherical steel ball is used in a pinball machine. The ramp is 1.35 m long and tilted at an angle of 5.00°. Just after a flipper hits the ball at the bottom of the ramp, the ball has an ini...