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Problem: Choose a common fruit fly Drosophila melanogaster at random. Call the length of the thorax (where the wings and legs attach) Y. The random variable Y has the Normal distribution with mean μ= 0.800 millimeter (mm) and standard deviation μ= 0.078 mm. The probability P(Y > 1) that the fly you choose has a thorax more than 1 mm long is about
(a) 0.995.
(b) 0.5.
(c) 0.005. CH
an object weighing 310 n in air is immersed in water after being tied to a string connected to a balance. the scale now
A 7.90×10-2-{rm kg} toy airplane is tied to the ceiling with a string. While the airplane's motor is started, it moves with a constant speed of 1.20m/s in a horizontal circle of radius 0.50m.
The terminal speed of a free falling object ball is vt. When the ball is supported by a light elastic spring the spring stretches with an amount x. Show that if the linear law of air resistance acts to damp the oscillation, the natural frequency of o..
Jack pushes an 8.0kg box is through a distance of 2.2m up a 20o frictionless incline. What is the work done by Jack
An plane traveling horizontally at 78 m/s at an elevation of 210 meter drops bales of hay to cows stranded in a snowstorm. Find the velocity of a bale as it reaches the ground
Two gliders are positioned on an air track, M1 and M2. M2 is stationary and M1 is then pushed down the track and collides with M2. They stick together and continue down the track.
A student sits at rest on a piano stool that can rotate without friction. The moment of inertia of the student-stool system is 3.5 kg*m^2. Calculate the initial and final kinetic energy of the system
Four closed surfaces, S1 through S4, together with the charges -2Q, Q, and -Q are sketched in the figure below. Find the electric flux through each surface.
between the poles of a powerful magnet is a cylindrical uniform magnetic field with a diameter of 4.50 cm and a
A person is riding a bicycle, and its wheels have an angular velocity of 12.1 rad/s. What is the anguar acceleration (in rad/s2) of each wheel
The rms speed of the molecules in 1.1g of hydrogen gas is 1800 m/s. What is the thermal energy of the gas
When a slice of buttered toast is accidentally pushed over the edge of a counter, it rotates as it falls. Determine the argest angular speeds that cause the toast to hit and then topple to be butter side down
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