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Two blocks, A and B have a mass of 100kg each. Coefficient of friction between all surfaces= 0.3. Determine the force P required to pull the block B from under the block A. Block A is held in place and wont move. (answer is 883)
A 1500 {rm kg} car skids to the halt on a wet road where mu_k = 0.50. How fast was the car travelling if it leaves 66-{rm m}-long skid marks.
question a glass rod rubbed with silk acquires a charge of 1.0times10-9 c.1-what is the charge on the silk?2-how many
A gob of clay, mass 217 g, falls from rest a distance 50 cm before striking and sticking to the edge of a wheel free to rotate about a horizontal axis through its center.
find the work done on the man by the gravitational force
A 0.2 kg mass is attached to two springs by identical spring constants of 90 N/m and moves on a horizontal frictionless surface. The equilibrium length of each spring is 48 cm, so each is slightly stretched (to 50 cm) initially. The mass is then move..
An elevator is initially moving upward at a speed of 11.18 m/s. The elevator experiences the constant downward acceleration of magnitude 4.44 m/s2 for 2.87 s.
A cheetah is after its prey, which has a mass that is one-half that of the cheetah. When both start from rest, the cheetahsustains 2.50 times the acceleration as does its prey in the same time period.
An object is 13 cm in front of a convex mirror whose focal length magnitude is 9 cm. What is the magnitude of the distance from the image to the mirror?
If the coefficient of kinetic friction between the box and the roof is 0.55, with what speed must you push the box to have it gently come to rest right at the edge of the roof.
A thin spherical shell of mass 0.450 kilogram and diameter 0.230 meter is filled with alcohol (ρ = 806 kg/m3). Obtain the acceleration of the alcohol-filled shell
A particular guitar string is supposed to vibrate at 203 Hz, other than it is measured to actually vibrate at 208 Hz. By what percentage must the tension in the string be changed to get the frequency to the correct value.
A step-down transformer is used for recharging the batteries of portable devices. find the rms output voltage of the transformer
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