Physics Force & Laws Of Motion Level: High School
Three blocks of mass 12.8 kg each , on a frictionless horizontal surface are in contact with each other as shown in the figure at “click here”(a) A force F = 92.0 N is applied to block 1 (mass m1) Determine the acceleration of the system
(b) Calculate the net force on each block
.(c) Calculate the force of contact that block m1 , exerts on m2 .
(d) Calculate the force of contact that block m2 exerts on m3
Physics Force & Laws Of Motion Level: High School
If the block starts from rest 10.1 m up the plane from its base , what will be the block’s speed when it reaches the bottom of the incline ?
Physics Force & Laws Of Motion Level: High School
The block shown in the figure “click here” has mass m = 6.17 kg and lies on a smooth frictionless plane titled at an angle e = 23.8 degree to the horizontal . Determine the acceleration of the block as it slides down the plane .
Physics Force & Laws Of Motion Level: High School
(a)310 kg helicopter accelerates upward at 0.530 m/s^2 while lifting a 1230 kg car . What is the force exerted by the air on the rotors ?(b)What is the tension in the cable (ignore its mass) that connects the car to the helicopter ?
Physics Ray Optics Level: High School
Red light of wavelength 600.0 nm is incident on a grating . If the separation between the slits is 5.0 x 10^-5 m, at what angle does the first principal maximum occur ? a. 0.6 x 10^-2 rad b. 0.8 x 10^-2 rad c. 1.2 x 10^-2 rad d. 3.6 x 10^-2 rad e. 5.0 x 10^-2 rad
Physics Ray Optics Level: High School
A 30.0 mm wide diffraction grating produces a deviation of 30.0 degree in the second order principal maxima . The wavelength of light is 600.0 nm . What is the total number of slits on the grating ? a. 10 000 b. 11 500 c. 12 500 d. 14 000 e. 15 000
Physics Ray Optics Level: High School
Two stars are just barely resolved by a telescope with a lens diameter of 0.500 m. Determine the angular separation of the two stars . Assume incident of light of wavelength 500.00 nm . a. 1.22 x 10^-6 rad b. 5.66 x 10^-5 rad c. 2.44 x 10^-7 rad d. 4.88 x 10^-5 rad e. 1.22 x 10^-7 rad
Physics Ray Optics Level: High School
Light of wavelength 700.0 nm passes through a diffraction grating . The m = 0 and m = 1 bright spots are 6.0 cm apart on a screen positioned 2.0 cm from the grating . What is the spacing between the slits in the grating ? a. 233 nm b. 423 nm c. 467 nm d. 738 nm e. 1240 nm
Physics Ray Optics Level: High School
A Michelson interferometer is used to measure the wavelength of light emitted from a monochromatic source. As the adjustable mirror is slowly moved through a distance DA = 0.0265 mm , an observer counts 411 alternations between bright and dark fields . What is the wavelength of the monochromatic light used in this experiment ? a. 193 nm b. 227 nm c. 258 nm d. 346 nm e. 369 nm.
Physics Ray Optics Level: High School
What is the minimum (non zero) thickness of a benzene (n = 1.501) thin film that will result in constructive interference when viewed at normal incidence and illuminated with orange light (ë vacuum = 615 nm) ? A glass slide (ng = 1.620) supports the thin film . a. 51.0 nm b. 306 nm c. 204 nm d. 102 nm e. 76.0 nm
Physics Ray Optics Level: High School
Young's Double slit experimentation
Two slits are separated by 2.00 x 10^-5 m. They are illuminated by light of wavelength 5.60 x 10^-7 m. If the distance from the slits to the screen is 6.00 m , What is the separation between the central bright fringe and the third dark fringe ? a. 0.421 m b. 0.224 m c. 0.168 m d. 0.084 m e. 0.070 m
Physics Ray Optics Level: High School
Which one of the following statements provide the most convincing evidence that visible light is a form of electromagnetic radiation ? a. Two light sources can be coherent . b. Light can be reflected from a surface . c. Light can be diffracted through an aperture . d. Light can form a double-slit interference pattern . e. Light travels through vacuum at the same speed as X-rays .Physics Ray Optics Level: High School
Two polarizing sheets have their transmission axes parallel so that the intensity of unpolarized light transmitted through both of them is a maximum . Through what angle must either sheet be rotated if the transmitted intensity is 25% of the incident intensity ? a. 15 degree. b. 30 degree. c. 45 degree. d. 60 degree. e. 75 degree.
Physics Ray Optics Level: High School
Unpolarized light of intensity So passes through two sheets of polarizing material whose transmission axes make an angle of 60 degree with each other as shown in the figure at “click here” . What is the intensity of the transmitted beam , St ? a. So/4 b. So/8 c. 3So/4 d. So/16 e. Zero
Physics Ray Optics Level: High School
Doppler Effect
An astronomer observes electromagnetic waves emitted by oxygen atom in a distant galaxy that have a frequency of 5.710 x 10^14 Hz . In the laboratory on earth , oxygen atoms emit waves that have a frequency of 5.841 x 10^14 Hz . Determine the relative velocity of the galaxy with respect to the astronomer on the earth . Note : The speed of the light is 2.9979 x 10^8 m/s .a. 6.724 x 10^6 m/s , away from earth .
b. 6.724 x 10^6 m/s , toward earth .
c. 2.931 x 10^8 m/s , away from earth .
d. 4.369 x 10^4 m/s, toward earth .
e. 4.369 x 10^4 m/s , away from earth .
