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A steel beam 10m long is installed in a structure at 20 degrees C. What are the beam's changes in length at the temperature extreme -30 degrees C to 45 degrees C?
A jet with mass m = 1.3 × 105 kg jet accelerates down the runway for takeoff at 2.4 m/s2, What is the net horizontal force on the airplane
q1. a block with a mass of 20 g is pulled at a constant speed across a horizontal tabletop with a spring scale. the
Click on the Energy vs. Position button to see a plot of the kinetic, potential, thermal, and total energies as a function of the skater's position. Try Bar Graph to see the same information as a bar graph. For this tutorial, you should have the C..
The tension in a string is 20.6 n and its linear density is .649 kg/m. A wave on the string travels in the -x direction. It has amplitude of 3.71 cm and a frequency of 10.6 hz. What are the speed and wavelength of wave.
Two large, parallel, conducting plates are 23 cm apart and have charges of equal magnitude and opposite sign on their facing surfaces. An electrostatic force of2.5 10-15 N acts on an electron placedanywhere between the two plates.
A 120g ball moving at 0.50 m/s in the + x direction is subject to a 0.25 N force in the - y direction for 2.5 s, Find the balls final speed
A wooden block with mass 0.33kg rests on a horizontal table, connected to a string that hangs vertically over a friction-less pulley on the table's edge, Find the block's acceleration if k =0.18.
Two wooden crates rest on top of one another. The smaller top crate has a mass of m1 = 16.0 kg and the larger bottom crate has a mass of m2 = 90.0 kg. what is the acceleration of the lower crate
A 0.14 kg baseball moves horizontally with a speed of 27 m/s toward a bat. find magnitude of the impulse delivered to the ball by the bat
A 0.66kg mass at the end of a spring vibrates 4.0 times per second with an amplitude of 0.15m. Determine the total energy of the system
A sphere of radius 1.0 cm is dropped into a glass cylinder filledwith a viscous liquid. The mass of the sphere is 12.0 g and the density of the liquid is 1200 kg/m3. The sphere reaches a terminal speed of 0.15 m/s. What is the viscosity of the liq..
q1. a driver in a car travelling at a speed of 58.0 mih sees a deer 126 m away on the road. calculate the minimum
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