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A block of wood 34 cm wide and 85 cm tall is placed on a merry-go-round which rotates at 0.95 rad/s. How far from the center may the block be placed before it will tip over? The acceleration of gravity is 980 cm/s2.
a generator is designed to produce a maximum emf of 170 v while rotating with an angular speed of 3600 rpm. each coil
X rays with a wavelength of 0.18 nm undergo first-order diffraction from a crystal at a 74 degree angle of incidence
A thin spherical shell of mass 0.25 kg and radius 0.15 m is released from rest from the top of a 3.0-m high ramp. What would the linear speed be at the bottom
A 5.00-m beam is hanged horizontally about its ends by two very light cables A and B as shown in Fig. 4. The angles these cables make by the horizontal ceiling are shown, and the tension in cable A is measured to be 875 N. Discover: (a) the tension i..
question planet a has a radius of 750 km and an acceleration due to gravity of .47 ms2. what are the escape speed from
A 54.6 g sample of a conducting material is all that is available. The resistivity of the material is measured to be 1.18×10-7 ?m and the density is 7.82 g/cm3. What length is required
A projectile is fired up into the air at a speed of 119 m/s at an angle of 23° relative to the horizontal. Determine the maximum height the projectile will reach.
the snow exerts a retarding force on the sled that points opposite to the direction of motion, and has a magnitude of 57. Find out the acceleration of the sled and child.
In recent years, astronomers have found planets orbiting nearby stars that are quite different from planets in our solar system. Kepler-39b, has a diameter that is 1.2 times that of Jupiter (RJupiter = 6.99 × 107 m), but a mass that is 18 times that ..
You slide a box of books at constant speed up a 30 degree ramp, applying a force of 160 N directed up the slope. What is the mass of the box
Two forces A=40N and B=70N can act on an object in any direction desired. What is the minimum resultant force
A charge of 6.53mC is placed at each corner of a square .470 m on a side. Determine the direction of the force on each charge
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