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Q. The force exerted by the wind on the sails of a sailboat is 490 N north. The water exerts a force of 250 N east. If the boat (including its crew) has a mass of 300 kg, what are the magnitude and direction of its acceleration?
Q. A charge moves a istance of 2.0cm in the direction of a uniform electric field having a magnitude of 228 N/C. the electrical potential energy of the charge decreases by 45.0523*10^-19 J as it moves. find the magnitude of the charge on the moving particle.
A bolt is dropped from a bridge under construction, falling 92m to the valley below the bridge. (a) How much time does it take to pass through the last 26 percent of its fall? What is its speed (b) when it begins that last 26 percent of its fall a..
Two boxes, m1 = 1.0 kg with a coefficient of kinetic friction of 0.10, and m2 = 2.0kg with a coefficient of 0.20, are placed on a plane inclined at 0 = 30o.
A 11 g bullet is fired horizontally into a 109 g wooden block that is initially at rest on a frictionless horizontal surface and connected to a spring having spring constant 142 N/m. The bullet becomes embedded in the block.
While john is travelling along an interstate highway, he notices a 160 mile marker as he passes through town. Later John passes another mile marker, 119.
Find out the gravitational potential energy
Valerie is able to do 1200 joules of work in 10seconds. Brett is able to do 5000 joules of work in 50 seconds. Who is more powerful.
What apparent free-fall acceleration is experienced by the managers remaining on the rim assume that the average mass for each inhabitant is 65kg.
A 4.79 crate is suspended from the end of a short vertical rope of negligible mass. An upward force is applied to the end of rope, and the height of the crate above its initial position is given by + (0.61) what is the magnitude of the force when ..
A long, narrow rectangular loop of wire is moving toward the bottom of page with a speed of 0.025 m/s. The loop is leaving a region in which a 2.1 T magnetic field exists; magnetic field outside this region is zero. All through the time of 1.0 s, wha..
If the Hawaiian hot spot is a fixed hot spot, which of directions is closest to the direction that the Pacific Plate was apparently moving as the Emperor Seamount Chain formed.
The displacement of an object moving under uniform acceleration is some function of time and the acceleration. Suppose we write this displacement as s=ka^mt^n, where k is the dimensional constant. Show by dimensional analysis that this expression ..
find the magnitude and direction of the field at this point.
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