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The force vector A has a magnitude of 91.0 newtons and points due east. The force vector B has a magnitude of 134 newtons and points 78° north of east. Use the graphical method and find the magn
An 1.40×10^4 N test car travels 45.5m before stopping from an initial speed of 26.7 m/s on dry horizontal pavement with its wheels locked. Assuming constant acceleration, find the magnitude o
Consider a cylindrical segment of a blood vessel 1.7 cm long and 2.4 mm in diameter. What additional outward force would such a vessel need to withstand in the person's feet compared to a similar v
An airplane with a speed of 79 m/s is climbing upward at an angle of 48° counterclockwise from the positive x axis. When the plane's altitude is 540 m the pilot releases a package.
A solid cylindrical disk has a radius of 0.15 m. It is mounted to an axle that is perpendicular to the circular end of the disk at its center. When a 45-N force is applied tangentially to the disk,
Consider a thin rod of mass 1.4 kg, length 2.7 m and uniform density. The rod is pivoted at one end on a frictionless horizontal pin. The rod is initially held in horizontal position but eventually
The gravitational force exerted on a baseball is 2.13 N down. A pitcher throws the ball horizontally with velocity 16.5 m/s by uniformly accelerating it along a straight horizontal line for a time
Find the pressure difference on an airplane wing where air flows over the upper surface with a speed of 118 m/s, and along the bottom surface with a speed of 105 m/s.
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