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In traveling to the Moon, astronauts aboard the Apllospacecraft put themselves into a slow rotation to dsitribute theSun’s energy evenly. At the start of their trip, theyaccelerated from no rotation to 1 revolution per minute during a12- min time interval. We can approximate the spacecraft as acylinder with mass 50 (metric) tons and a diameter of 8.5m. Calculate (a) the angular acceleration, (b) the torque needed toproduce such an acceleration, and (c) the magnitude of the linearacceleration of a point on the skin of the ship 5 min after itstarted accelerating.
A 50 Newton horizontal force pushes a 10 kilogram mass sitting on a horizontal surface towards the right. What is the acceleration of the mass and its direction
A 0.15g honeybee acquires a charge of 22pCwhile flying. The electric field near the surface of the earth is typically 100N/C, What is the ratio of the electric force on the bee to the bee's weight
If 200 J of heat is removed from a hot reservoir at 800 K by an engine cycle, what is the minimum amount of heat that the cycle must dump into a cold reservoir at 300 K
a soccer ball is kicked from the ground with an initial speed of 21.0 ms at an upward angle of 45deg. a player 58.0 m
a ball dropped from a height of 4.00m makes an elastic collision with the ground. assuming no mechanical energy is lost
Two microscope slides are placed one on top the other. They are in contact at one end but a hair separates them at the other end. What is the thickness of the hair
A sled is pulled with a horizontal force of 20 N along a level trail, and the acceleration is found to be 0.35 m/s2. find the coefficient of kinetic friction between the sled and the trail
A material has an index of refraction of 2.050. What is the critical angle for internal reflection inside a block
A person in a rocking chair completes 15 cycles in 17s, What are the period of the rocking
a bread box is made to move along an x axis from x 0.15 m to x 1.20 m by a force with a magnitude given by f e-2x2
Air is trapped above liquid ethyl alcohol in a rigid container. If the air pressure above the liquid is 1.11 atm, determine the pressure in the bulb inside a bubble 4.0 m below the surface of the ethanol.
Two long, straight wires that are suspended from a ceiling. The mass per unit length of each wire is 0.071 kg/m. Each of the four strings suspending the wires has a length of 1.2 m. When the wires carry identical currents in opposite directions, t..
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