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A 5.6-µC point charge is located at x = 1.2 m, y = 3.2 m, and a -4.2-µC point charge is located at x = 1.9 m, y = -2.3 m. (a) Find the magnitude and direction of the electric field at x =
The density of ice is 917 kg/m3, and the density of sea water is 1025 kg/m3. A swimming polar bear climbs onto a piece of floating ice that has a volume of 3.54 m3. What is the weight of the heaviest
The potential at location A is 419 V. A positively charged particle is released there from rest and arrives at location B with a speed vB. The potential at location C is 787 V, and when released fro
A point charge causes an electric flux of -570 N·m2/C to pass through a spherical Gaussian surface of 24.0 cm radius centered on the charge. (a) If the radius of the Gaussian surface were doubl
If the coefficient of kinetic friction between tires and dry pavement is 0.800, what is the shortest distance in which an automobile can be stopped by locking the brakes when traveling at 25.8 ?
A 2.00-g charged particle is released from rest in a region that has a uniform electric field = (610 N/C) . After traveling a distance of 0.490 m in this region, the particle has a kinetic energy 0.
The volume of the person's body that is under water is 6.5 10-2 m3. What is the density of the life jacket?
If the electroplating apparatus operates at 1.40 {\rm mA}, how long will it take the zinc to reach the desired thickness?
Assuming that the top and bottom surfaces of the cap each have an area of 3.70 10-4 m2, obtain the magnitude of the force that the screw thread exerts on the cap in order to keep it on the bottle. T
An infinitely long line of charge has a linear charge density of 3.00×10-12 . A proton is at distance 17.0 cm from the line and is moving directly toward the line with speed 1900 m/s. How close
11.50 kg block of metal measuring 12.0 cm x 10.0 cm x 10.0 cm is suspended from a scale and immersed in water. The 12.0 cm dimension is vertical and top of the block is 5.75 cm below the surface of
A golfer imparts a speed of 30.0 m/s to a ball, and it travels the maximum possible distance before landing on the green. The tee and the green are at the same elevation. a) How much time does the b
A top-fuel dragster can go from 0 to 60.0 mi/h in 0.600 s. Find the acceleration of the dragster.
A block of mass m = 3.0 kg is attached to a spring of constant k = 240 N/m. It can slide along a board tilted at an angle theta = 37° to the horizontal. Initially the block is released from res
A 50.0-m length of coaxial cable has an inner conductor that has a diameter of 2.58 mm and carries a charge of 8.10 µC. The surrounding conductor has an inner diameter of 7.27 mm and a charge
You decide to take the plunge and go bungee jumping. Being a college student, you do this on the cheap, and buy a bungee cord with a spring constant of k = 500 N/m and a length of L = 8.0 m. You cho
A golf ball is struck with a five iron on level ground. It lands 91.8 m away 4.20 s later. What was (a) the direction and (b) the magnitude of the initial velocity?
A sprinter explodes out of the starting block with an acceleration of +4.5 m/s2, which she sustains for 1.5 s. Then, her acceleration drops to zero for the rest of the race.
A physicist out at the cabin uses a sonar device to determine the speed of a jet-ski on the nearby pond. A 20.5 kHz signal is sent out and a 22.5 kHz signal is returned. Assume the speed of sound in
When the three blocks are released from rest, they accelerate with a magnitude of 0.600 m/s2. Block 1 has mass M, block 2 has 2M, and block 3 has 2M. What is the coefficient of kinetic friction betw
Some units can be calibrated by using a tuning fork; holding a vibrating fork in front of the unit causes the display to register a speed corresponding to the vibration frequency.A tuning fork is la
At the end of this time, the boat continues for an additional 6.25 s with an acceleration of +0.518 m/s2. Following this, the boat accelerates at -1.49 m/s2 for 8.05 s. Find the total displacement of
A 1 Farad capacitor is charged to 10 volts. Call this capacitor A. It has a certain amount of stored charge. It is suddenly connected across an uncharged 1 Farad capacitor which we shall call capaci
A very long uniform line of charge has charge per unit length 4.74*10^-6 C/m and lies along the x-axis. A second long uniform line of charge has charge per unit length -2.56*10^-6 C/m and is paralle
An exercise machine indicates that you have worked off 2.5 Calories in a minute-and-a-half of running in place. What was your power output during the time? Give your answer in both watts and horsepo