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In an old-fashioned amusement park ride, passengers stand inside a3.0-m-tall, 5.0-m-diameter hollow steel cylinder with their backsagainst the wall. The cylinder begins to rotate about a verticalaxis. Then the floor on which the passengers are standing suddenlydrops away! If all goes well, the passengers will“stick” to the wall and not slide. Clothing has astatic coefficient of friction against steel in the range 0.60 to1.0 and a kinetic coefficient in the range 0.40 to 0.70.A) What is the minimum rotational frequency, in rpm, for which theride is safe?
an electron is fired with speed 2400 ms into a region of uniform electric field with magnitude 8 nc. assuming the
at a certain time a particle had a speed of 20 ms in the positive x direction and 2.2 s later its speed was 30 ms in
The nonconservative wind and lift forces take the balloon up, doing +9.70 104 J of work on the balloon in the process. Illustrate at what height above the surface of the earth does the balloon have a speed of 8.90 m/s?
One liter of helium at STP is heated at constant volume to 100 C. It is then allowed to mix in an insulated container with one liter of methane which is initially at STP, the final volume being two liters.
At what speed (m/s) would a 1140-kg car have the same momentum as a 12,600-kg truck traveling at17.8km/hr,What is the car's change in momentum
plan a vector to represent each of the two teams. find the magnitude of the resultant.
Consider a planet of radius 5.78 106 m with a rotation period of 21.6 hours. Compute the radial acceleration of a point on the surface of the planet
a 5.9cm -thick layer of oil n1.46 is sandwiched between a 1.5 -thick sheet of glass and a 2.5 cm-thick sheet of
A gun shoots bullets that leave the muzzle with a speed of 341. If a bullet is to hit a target 177 away at the level of the muzzle, the gun should be aimed at a point above the target.
Let the x axis be parallel to the ground, +y direction be vertically upward, and take as an origin the point on the ground directly below the top of the ramp.
A hollow spherical conductor, carrying a net charge +Q, has inner radius r[1] and outer radius r[2] = 2r[1]. At the center of the sphere is a point charge +Q/2. (a) Write the electric field strength E in all three regions as a function of r.
Children in a tree house lift a small dog in a basket 4.80 up to their house. If it takes 221 J of work to do this, what is the combined mass of the dog and basket
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