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A helicopter, starting from rest, accelerates straight up from the roof of a hospital. The lifting force does work in raising the helicopter. An 920-kg helicopter rises from rest to a speed of 7.0 m/s in a time of 3.5 s. During this time it climbs to a height of 9.1 m. What is the average power generated by the lifting force?
If the ball is in contact with the wall for 0.200 s, what is the average force exerted by the wall on the ball? (Suppose right is the positive direction.)
Follow that with some of her work on repressed memories. After completing your readings on the WebLink, the textbook, and the PowerPoint presentation, address the prompts for your assignment.
The mass of the blue puck shown below is 20.0% greater than the mass of the green puck. Find the speeds the pucks have after the collision if half the kinetic energy of the system becomes internal energy during the collision
What is the speed of the center of mass
what is the max number of steps any worker should be allowed.
Two charged spherical conductors are connected by a long conducting wire, and a charge of 15 μC is placed on the combina- tion. One sphere has a radius of 4.05cm and the other a radius of 6.05cm.
An object 5.00 mm tall is placed 6.00 cm to the left of a converging lens of focal length 20.0 cm. How far away from the lens is the image formed
Two free particles (that is, free to move) with charges +q and +4q are a distance L apart. A third charge is placed so that the entire system is in ?quilibrium. Find out the location, magnitude, and sign of the third charge.
The density of an ideal gas is found to vary with temperature according to the equation d=PM/RT, where P and M were held constant in this case.
The vector is 3.5 long and is directed into this page. Vector points from the lower-right corner of this page to the upper-left corner of this page and has components -19.5, 25.
discussion topic 11.discuss how differentiation and integration theorems simplify analysis of time-based
The power needed to operate your body is about 100 {rm watts}. Suppose your body could run on fusion power and could convert a total of 0.7 of its mass into energy. How much energy would be available through fusion? Assume the mass is 70kg.
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