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A uniform rectangular plate is hanging vertically downward from a hinge that passes along its left edge. By blowing air at 9.70 m/s over the top of the plate only, it is possible to keep the plate in a horizontal position, as illustrated in part a of the drawing. To what value should the air speed be reduced so that the plate is kept at a 30.0° angle with respect to the vertical, as in part b of the drawing?
In February 1955, a paratrooper fell 370 m from an airplane without being able to open his chute but happened to land in snow, compute the magnitude of the impulse on him from the snow?
the human eye can readily detect wavelengths from about 400 nm to 700 nm. if white light illuminates a diffraction
A hypodermic syringe contains a medicine with the density of water (see figure below). The barrel of the syringe has a cross-sectional area of 2.50 x 10^-5 m2. In the absence of a force on the plunger, the pressure everywhere is 1.00 atm.
A 0.57 kg object connected to alight spring with a force constant of 24.8 N/m oscillates on a frictionless horizontal surface. Determine the maximum speed of the object
A particle (q=7.5*10^-6 C) is released from rest at a point on the x-axis, x = 10 cm. It begins to move due to the presence of a 2.0*10^-6 C charge which remains fixed at the origin. What is the kinetic energy of the particle at the instant it passe..
a capacitor is charged up to 6V , then disconnected from the power supply and connected in series with a 0.2mh inductor, determine the numerical value of the capacitance
A person eats a dessert that contains 280 Calories. (This "Calorie" unit, with a capital C, is the one used by nutritionists; 1 Calorie = 4186 J.
A 80.0cm3 box contains helium at a pressure of 2.30atm and a temperature of 90.0?C. What is the final pressure in each box
If the man falls with his knees and ankles locked, the only cushion for his fall is a 0.480 cm give in the pads of his feet. Calculate the average force exerted on him
One end of a wire is attached to a ceiling, and a solid brass ball is tied to the lower end. What is the radius of the brass ball
The potential difference across a cell membrane form outside to inside is initially at -90 mV (when in its resting phase). How many ions move through the membrane
A solid uniform sphere of mass M and radius R has atranslationavelocity of 10m/s while rolling w/o slipping. estimate to whatmaximum height will it attain
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