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A 2000 kilogram sailboat experiences an eastward force of 3000 Newton by the ocean tide and a wind force against its sails with magnitude of 6000 Newton directed toward the northwest (45 degrees N of W). Find the magnitude of the resultant acceleration?
A spring is stretched between two posts. When a pulse is produced at one end of the spring, it makes 4 back-and-forth trips along the spring in 3.4 s. If the pulse has a propagation speed of 12 m/s, how far apart are the posts?
A pot containing1.00 liter of water, initially at 20.08C, is placed on a 1000 W electric heating element. How much heat must be supplied to the water to bring it to a boil
A nonconducting spherical shell, with an inner radius of 7.4 cm and an outer radius of 9.9 cm, has charge spread nonuniformly through its volume between its inner and outer surfaces.
What is the velocity of the beam of electrons that go undeflected when passing during perpendicular electric and magnetic fields of magnitude 4700 V/m and 3.6×10-3 T, correspondingly.
The sketch at the left shows a square loop of wire. Its resistance is 5 O. Its dimensions are shown: a = 4.0 em, b = 5.0 em. The nearby wire carries a current of 10.0 A. This current is increasing at the rate 120 A/s. What is the current in the lo..
A student on a piano stool rotates freely with an angular speed of 3.05 rev/s. Calculate the initial kinetic energy of the system
Jamal pulls a 150-N sled up a 28.0 degrees slope at constantspeed by a force of 100 N. Near the top of the hill he releases the sled. With what acceleration does the sled go down the hill?
a coil carries a current and experiences a torque due to a magnetic field. the value of the torque is 80 of the maximum
A nozzle of inner radius 1.05 mm is connected to a hose of inner radius 8.02mm. The nozzle shoots out water moving at 25.0 m/s. At what speed is the water in the hosemoving? What is the volume flow rate?
The greatest ocean depths on the Earth are found in the Marianas Trench near the Philippines. Calculate the pressure due to the ocean at the bottom of this trench
A farsighted person has a near point of 61 cm rather than the normal 25 cm. What strengthlens, in diopters, should be prescribed to correct this visionproblem?
A rocket is launched at an angle of 56.0° above the horizontal with the initial speed of 101 m/s. The rocket moves for 3.00 s along its initial line of motion with an acceleration of 28.0 m/s2. At this time, its engines fail and the rocket proceeds..
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