Physics Ray Optics Level: Misc Level
A 5.75 cm pencil is placed upright at a distance 53.5 cm. away from the center of a convex minrror. The mirror s radius of curvature is 45 cm.Answer the following:
Find the image distance. 2. Is the image real or virtual? 3. what is magnification? 4 Is the image inverted or upright?
Physics Ray Optics Level: Misc Level
A double slit interference experiment is performed using blue light from a hydrogen discharge tube where the wavelength is 286 nm. The fifth- order bright fringe in the pattern is 0.578 degrees from the central maximum. How far apart are the two slits separated?
Physics Ray Optics Level: Misc Level
The Hubble Space Telescope, whit an objective diameter of 2.4 m, is viewing the moon. Estimate the minimum distance between two objects on the moon that the Hubble can distinguish. consider diffraction of light of wavelength 550 nm. The distance from the Hubble to the moon is 384 x 103 km.
Physics Waves And Oscillations Level: Misc Level
The frequency of light emitted by a star moving away from us (the observer) with speed v will be red-
shifted (its frequency will be lowered ) by an amount,, provided v/c<<1, where c is the speed of light
(c =3.0 *10^8 m/s). How fast is a galaxy receding from us if the observed frequency is . 95 times the natural frequency of the light?
Physics Waves And Oscillations Level: Misc Level
A source of sound waves is operating in midair, far from any reflecting surfaces. If 1.0 m from the source, the sound intensity level is 120 db, what is intensity 1000 m from the source? what is the total power output of source?
Physics Work,Power & Energy Level: Misc Level
Find the work that must be done on a 6000 kg car to decrease its speed from 45 m/s to 25 m/s (Remember 1 hp = 550 ft - lb - s = 746 w)
Physics Work,Power & Energy Level: Misc Level
Find the work done by a force F of magnitude 300.0 N as it moves through a deisplacement s of magnitude 23.0 m. The angle between F and s is 143 degrees.
Physics Force & Laws Of Motion Level: Misc Level
A force that is acting on a particle has a magnitude of 75. 0 N and its direction is at an angle of 30 degrees to the left of the negative y - axis. what is the x - component of the acceleration of the particle if its mass is 125. 0 kg?
Mathematics Trigonometry Level: Misc Level
6. prove cos 2ly +1/ coty =SIN 2y
Mathematics Trigonometry Level: Misc Level
5. if SIN A =.1 and COS A= - squate root of . 99, then A) SIN (A+pie/6) B) COS (pie/4-A)
Mathematics Trigonometry Level: Misc Level
4. Given that Cos 0= - 7, pie <0 <3/ 2 pie. Find A) Sin 0/2 = B) Cos 0/2 =
Mathematics Trigonometry Level: Misc Level
Questions: 1.Evaluate exactly
1-2 sin^2( 22.5^0)
Physics Properties Of Matter Level: Misc Level
Engine oil with a coefficient of viscosity of 0.2 Pa at 30 degrees celcius passes through a fine tube with 1.8 mm diameter in a prototype engine. The tube is 5.5 cm long. what pressure difference is needed to maintain a flow rate of 5.6 ml/ min?
Physics Waves And Oscillations Level: Misc Level
You are standing at the roadside as atruck approaches and you mesure the dominant frequency in the truck noise at 1100 Hz. As the truck passes, the frequency drops to 900 Hz. what is the truck s speed?
Physics Force & Laws Of Motion Level: Misc Level
Questions:1. A ladder of length L and weight w rests on a rough floor and against a frictionless wall. The coefficient of static friction at the floor is 0.6........(a) find the maximum angle between the ladder and the wall such that the ladder does not slip.
(b) The force exerted by the wall at this angle.
