An 17.0 W energy-efficient fluorescent lamp is designed to produce the same illumination as a conventional 60.0 W lamp. (a) How much energy does this lamp save during 100.0 h of use? J (b)...
An 17.0 W energy-efficient fluorescent lamp is designed to produce the same illumination as a conventional 60.0 W lamp. (a) How much energy does this lamp save during 100.0 h of use? J (b)...
Two parallel slits used for a Young’ s interferometer experiment are 0.5 mm apart. The screen on which, the fringes are projected is 1.5 m from the slits. What is the distance between the fringes...
One arm of a Michelson interferometer utilizing light with λ=500 nm contains a cell 7.50 cm long between plane parallel windows. How many fringe shifts would be observed if all the air were evacuated...
When Michelson interferometer was used to measure the wavelength of monochromatic light, it was found that 400 fringes passed the observing microscope when the movable mirror was displaced 0.088 mm...
Compute the longest wavelength, which can be observed in third order by a transmission diffraction grating with 6000 line/cm. Answer is supposed to be 555.6 nm, please show me how to...
Newton’s rings are observed by reflected light of wavelength 589 nm. The central area is dark and is surrounded by light and dark circles. Find the thickness of the air film at the fourth bright circle...
A physics student decides he wants to see how fast his dad’s new sports car will accelerate, so he fashions a clinometer (angle indicator shown in the figure) that he attaches to the passenger-side...
A 50-kg crate is being pushed across a level, frictionless floor by a force F = 200 N. A 10-kg box is placed initially at rest against the crate as shown at the moment the force is applied. The coefficients...
A satellite is orbiting earth in an elliptical path. The distance to the earth from the satellite at aphelion is ra at perihelion is rp. Find the ratio of its speed at perihelion to that at...
The question has to do with the Schrodinger equation in one dimension and using the propagator. I have gotten an integral but it has to be solved to get the final solution which I can't get. The integral...
I'm really struggling with these problems. If anyone could help me out with these it would be greatly appreciated: 1.) An amusement park ride consists of a car moving in a vertical...
An athlete swings a 6.84 kg ball horizontally on the end of a rope. The ball moves in a circle of radius 1.16 m at an angular speed of 0.797 rev/s. a) What is the tangential speed of...
A dog sits 2.9 m from the center of a merry go-round. a) If the dog undergoes a 1.2 m/s^2 centripetal acceleration, what is the dog’s linear speed? b) What is the angular...
An airplane travels 78 m/s as it makes a horizontal circular turn which has a(n) 2.3 km radius. What is the magnitude of the resultant force on the 58 kg pilot of this airplane?
Looking carefully at the table, you estimate that the puck traveled about 5.5 feet across the table in about a quarter of a second. You remember from physics class earlier that week that typically,...
I need help with this problem i have no clue where to even begin with it. Everything i try is the wrong answer.
question a:write an equation that gives the baseballs height as a function of the time in seconds after it is hit. question b: after how many seconds is the baseball 84 feet above the ground?...
A 24.0 kg uniform solid cylinder has a radius of 0.259 m. If the cylinder accelerates at 3.90 × 10−2 rad/s2 as it rotates about an axis through its center, how large is the torque acting on the cylinder...
A Scientists want to place a 2600 kg satellite in orbit around Mars. They plan to have the satellite orbit a distance equal to 2.2 times the radius of Mars above the surface of the planet. Here...
How much work is required to lift a 4.4-kg concrete block to a height of 2.6 m?