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On a spacecraft two engines fire for a time of 589 s. One gives the craft an acceleration in the x direction of ax = 5.05 m/s2, while the other produces an acceleration in the y direction of ay = 7.29 m/s2. At the end of the firing period, the craft has velocity components of vx = 3726 m/s and vy = 4857 m/s. Calculate the magnitude of the initial velocity.
A runner wearing spiked shoes pulls a 18 kg sled across frictionless ice using a horizontal spring with spring constant 170 N/m. What is the acceleration of the sled
The system is released from rest, and the string moves without slipping over pulley. If the larger mass is traveling at a velocity of 2.25 m/s when it has dropped 1m, how much mechanical energy was lost due to friction in the pulley's axle.
For nitrogen gas at 35 C calculate the vrms, the vp and the translational kinetic energy
A 22.5-kg rock is sliding on a rough, horizontal surface at 9.50 m/s and eventually stops due to friction. What average power is produced by friction as the rock stops
A circular solenoid contains 100 turns of wire and carries a current of 2 amps. Its radius is 1 cm and its length is 10 cm. Calculate the magnetic flux through one turn of the wire
A ball on the porch rolls 60 {rm cm} to the porch's edge, drops 40 {rm cm}, continues rolling on the grass, and eventually stops 80 {rm cm} from the porch's edge.
A cylindrical capacitor consists of a cylinder (of length L and radius a) with a total charge Q nested inside a thin conducting cylindrical shell (of length L and radius b) with total charge -Q
A piece of iron is heated to 900?C. What is the median wavelength of its blackbody radiation
A reservoir has an area of 45000 sq.ft and a uniform thickness of 10 meters. Determine the pore volume of the reservoir
For this experiment you will require a stand, string, a paper or plastic cup, a nail, a roll of paper towels or similar sized paper, coloured sand, or some other dry powdery product, and a ruler or measuring tape.
An object 2.0mm high is placed 12cm from a convex mirror of radius of curvature 12c, Determine the image distance using the mirror equation 1do+1di=1f
Landing on the Moon, a spacecraft fires its retrorockets and comes to a complete stop just 19m above the lunar surface. It then drops freely to surface.How long does it take to fall in seconds? What is its impact speed in meter per seconds.
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