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If a fish has an average density of 1090 kg/m3 and mass 16.5 g with the bladder completely deflated, to what volume must the fish inflate the swim bladder in order to remain suspended in seawater of
(a) how much farther west does the blue boat travel, compared to the green boat, and (b) how much farther south does the green boat travel, compared to the blue boat? Express your answers in km.
(a) Write x-versus-t equations of motion for both cars, choosing east as the positive direction and using t for time (in seconds).At what time do the cars pass next to one another?
Consider two spheres with two masses and two charges. At a distance of 119.0 m, the ratio of the electric force to the gravitational force is f. As a multiple of f, what is the ratio between the for
Equal and opposite 5 μC point charges are located at the points y = ± .5 mm ( + 5 μC at y= + .5 mm and -5 μC at y = -.5 mm) . Find the force acting on a 2 μC point charge
There is a 10 N/C uniform electric field along the x-axis. a) if the potential at the origin is -15 V, what is the potential at x=10m ?
An electron that has a horizontal initial speed of 4.50E6 m/s enters a region that has an electric field of 120 V/m pointing vertically upward. (a) How long does the electron take to travel 18 cm in
A person who weighs 653 N steps onto a spring scale in the bathroom, and the spring compresses by 0.574 cm. (a) What is the spring constant? (b) What is the weight of another person who compresses t
During this time, it moves in a circular orbit with radius 6.7 106 m. (a) What is the average speed of the space shuttle during its journey?
A police car is traveling east at 39.5 m/s along a straight road, overtaking a car ahead of it moving east at 31.5 m/s. The police car has a malfunctioning siren that is stuck at 900 Hz. (a) What w
(a) Use the fact that the net horizontal force on the particle at the origin is zero to find the unknown charge on P3.
Determine the change in the internal energy of a system that absorbs 327 cal of thermal energy while doing 750 J of external work. Answer in units of J.
The space shuttle takes off from Cape Canaveral in Florida and orbits Earth 17 times before landing back at Cape Canaveral 24 hours and 15 minutes later. During this time, it moves in a circular or
What is the cross-sectional area of the cable? Has the cable been stretched beyond its elastic limit (2.5x10^8 Pa)?
An ice skater moves without friction on a frozen pond. While traveling at 7.5 m/s, she finds that it takes 12 s to travel the length of the pond. How long is the pond?
Two cars are headed right at each other. The car heading east started from rest and has an acceleration of 3.8 m/s/s. The car is moving west at a steady 19 m/s. If the cars are initially 120 m apar
An ideal gas initially at 20C and atmospheric pressure is placed in a solid cylinder with height 100cm and radius 5cm with a moveable piston for a top. To what temperature must the gas be raise a 2
A 4kg mass is on the end of a 80 cm long cord. The mass is pulled to an angle of 35 degrees from the vertical and then released. What is the speed of the mass as it reaches the bottom of its swing?
The facing surfaces of two large parallel conducting plates separated by 10.0 cm have uniform surface charge densities that are equal in magnitude but opposite in sign. The difference in potential
Liquid storage cans, such as gasoline cans, generally have capped vents. What is the purpose of the vents, and what happens if you forget to remove the cap before you pour the liquid? Explain how a
(a) What was the speed at the first point? (b) What was the acceleration? (c) At what prior distance from the first point was the car at rest? (d) Graph x versus t and v versus t for the car, from r
A ball is thrown from the top of a 50m cliff with a velocity of 10m/s @30 degrees. a) what is the time to the maximum height and what is the max height?
A proton moves along the x-axis according to the equation x= 50t + 10t^2,where x is in meters and t is in seconds. Calculate (a) the average velocity of the proton during the first 3.0s of its motio
Four passengers with combined mass 250 kg compress the springs of a car with worn out shock absorbers by 4.00cm when they enter it. Model the care and passengers as a single body on a single ideal
A block is attached to a spring with unknown spring constant oscillates with a period of 2.00 s. what is the period if (a) the mass is doubled? (b) the mass is halved? (c) the amplitude is doubled?