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A crane ABC hangs a weight of W. Assume that both segments AB and BC are uniform and their weight per unit length is γ. Neglect the lateral size of each segment and treat them as a line segment. Note that BC is horizontal and AB is perpendicular to BC. Find the internal forces of the crane at points D and E, respectively.
A box with a total surface area of 1.01 m2 and a wall thickness of 4.81 cm is made of an insulating material. Find the thermal conductivity of the insulating material
What is the wavelength of the waves emitted by source? What is the difference in frequency between directly radiated waves and the waves reflected from a whale travelling straight toward the ship at 4.99? Suppose that the ship is at rest in the water..
a a wire has a current density of 6.59 times 106 am2. if the cross-sectional area of the wire is 1.05 mm2 what current
A golf ball rolls off a horizontal cliff with an initial speed of 11.0 m/s. The ball falls a vertical distance of 13.0 m into a lake below. How much time does the ball spend in the air? What is the speed v of the ball just before it strikes the water..
The Sun emits energy at the rate of about 3.9 x 1026 W, estimate the fraction of this energy that falls on Earth
Two identical small conducting spheres are separated by 0.60m. The spheres carry dissimilar amounts of charge and each sphere experiences an attractive electric force of 10.8N. The total charge on the two spheres is -24uC. The two spheres are now con..
A constant retarding torque of 12 m.N stops a rolling wheel of adiameter .80 m in a distance of 15 m. How much work is done by torque
A daring ranch hand sitting on a tree limb wishes to dropvertically onto a horse galloping under the tree. The constantspeed of the horse is 13.0 m/s, How long is he in the air
If a constant force of 416 N acts in the direction opposite to the body's motion, how long must the force act to bring the body to rest
How many bright fringes appear between the first diffraction-envelope minima to either side of the central maximum in a double-slit pattern if the wavelength of the light λ is 550 nm, the thickness of the slitsd is 0.150 mm, and the distance betwe..
The magnetic field of the Earth at a certain location is directed vertically downward and has a magnitude of 49.0 µT. A proton is moving horizontally towards the west in this field with a speed of 6.40*106 m/s. What is the radius of the circular arc ..
illustrate what is the new horizontal distance L between the base of the slide and the splashdown point of the person?
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