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How much time does it take a pulse of light to travel through 140 of water?
A ferryboat transports tourists among three islands. It sails from the first island to the second island, 5.98 km away, in a direction 37.0° north of east. It then sails from the second island t
A cylinder of cross-sectional area A is divided inot tow chambers 1 and 2, by means of a frictionless piston. The piston as well as the walls of the chambers are heat-insulating
The gravitational force exerted on a baseball is 2.29 N down. A pitcher throws the ball horizontally with velocity 16.0 m/s by uniformly accelerating it along a straight horizontal line for a time i
A beam of parallel rays from a 29 MHz citizen's band radio transmitter passes between two electrically conducting (hence opaque to radio waves) buildings located 60m apart. What is the angular widt
A particle has an acceleration of 6.14 for 0.280 . At the end of this time the particle's velocity is 9.31. What was the particle's initial velocity?
The driver of a 1800{rm kg} car traveling on a horizontal road at 114{rm km}/{rm h} suddenly applies the brakes. Due to a slippery pavement, the friction of the road on the tires of the car, which i
An AA battery is connected to a parallel-plate capacitor having plates spaced 0.80 apart. How much charge does the battery supply to each plate?
A pendulum consist of a 320 grams solid ball 15 centimeters in diameter suspended by an essentially massless string 80 centimeters long. calculate the period f the pendulum treating it first as a s
Bob walks 280 south, then jogs 820 southwest, then walks 280 in a direction 34 east of north. Use either trigonometry or components to find the displacement that will return Bob to his starting poi
The core of an optical fiber has an index of refraction of 1.35, while the index of refraction of the cladding surrounding the core is 1.19. What is the critical angle for total internal reflection
Determine the image distance for an object d0 = 7.000 cm from a diverging lens of radius of curvature 5.600 cm and index of refraction 1.650. (Express your answer as a positive quantity.)
A coffee-maker contains a heating element that has a resistance of 38 Ω. This heating element is energized by a 120-V outlet. What is the current in the heating element?
A 185 kg horizontal beam is supported at each end. A 285 kg piano rests a quarter of the way from one end. What is the vertical force on the support closest and furthest from to the piano?
A train moving with constant velocity travels 170north in 14 and an undetermined distance to the west. The speed of the train is 36. Find the direction of the train's motion relative to north.?
You send a beam of light from a material with index of refraction 1.21 into an unkown material. In order to help identify this material, you determine its index of refraction by measuring the angle
Two people are carrying a uniform wooden board that is 3.00 m long and weighs 160 N. If one person applies an upward force equal to 60 N at one end, at what point does the other person lift? Begin
A Ford Mustang can accelerate from 0 to 60 in a time of 5.8 . A Mini Cooper isn't capable of such a rapid start, but it can turn in a very small circle 30 in diameter. How fast would you need to dr
A system of two sources consists of a solid, non- conducting sphere of radius R= 10 cm with charge +Q uniformly distributed throughout its volume, and a point source charge -2Q located a distance R
Calculate the net electric field at that point. Explain you reasoning and justify your work using the fundamental physics principles and definitions.
A plastic rod 1.4 m long is rubbed all over with wool, and acquires a charge of -9e-08 coulombs. We choose the center of the rod to be the origin of our coordinate system, with the x-axis extending
A painter of mass 140.0 kg stands on a platform of mass 55.0 kg and pulls on two ropes which hang over pulleys, as shown. He pulls each rope with a force of 50.0 N. Assuming a coordinate system whe
The drawing shows a skateboarder moving at 5 m/s along a horizontal section of a track that is slanted upward by 48° above the horizontal at its end, which is 0.44 m above the ground. When she
Exactly 3.0s after a projecttile is fired into the air from a flat grround, it is observed to have velocity v=(8.6i+4.8j) ms-1, where x is the horizontal and y axis is positive upward. Dertermine
A charge distribution consisting of three point-charges q, -2q, and q located along the y-axis as shown below is called an electric quadrupole. Find an expression for the electric field at a point P