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The solution to Bernoulli's equationThe construction of a flat rectangular roof (3.9 m x 4.3 m) allows it to withstand a maximum net outward force of 20050 N. The density of the air is 1.27 kg/m3. At what wind speed will this roof blow outward?
The electric field points radially outward at all points within the sphere (and outside too, for that matter). What is the strength of the electric field at a distance r from the center, inside sphere.
Status Newton's First Law of motion.
Illustrate a new gravitational potential energy
What is the torque on the root of the tooth about point A.
Block 1, of mass m_1 = 0.500 kg, is connected over an ideal (massless and frictionless) pulley to block 2, of mass m_2. Suppose that the blocks accelerate with an acceleration of magnitude a = 0.550 m/s^2 and that coefficient of kinetic friction b..
A 1.20 liter flask contains a certain quantity of ideal gas at 305 K. next an equal number of molecules of the same gas are added to the flask, after which the absolute pressure is 1.30 times its original value. What is the final temperature.
A solid, rectangular iron bar measures .40cm by 1.0cm by 30cm. Find the resistance between each of the three pairs of opposing faces, assume the faces in question are quipotentials.
Two charged bodies exert the force of 0.185N on each other. If they are moved so that they are one-fourth as far apart, what force is exerted.
How the system comes to thermal equilibrium
A steel band exerts a horizontal force of 76N on a tooth at point B. What is the torque on the root of the tooth about point A.
Megan's mass is 27 kg. She climbs the 4.8 m ladder of a slide and reaches a velocity of 3.6 m/s at the bottom of the slide. How much work was completed by friction on Megan? Imagine that air resistance is negligible.
A member of an aircraft maintenance crew wears protective earplugs that reduce the sound intensity by a factor of 350. When a jet aircraft is taking off.
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