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A cable exerts a constant upward tension of magnitude 2.34 ? 104 N on a 2.20 ? 103 kg elevator as it rises through a vertical distance of 1.70 m.
(a) Find the work done by the tension force on the elevator (in J).
(b) Find the work done by the force of gravity on the elevator (in J).
A 1000-kg sports car (including the driver) crosses the rounded top of a hill (radius = 90.0m ) at 22.0m/s. Determine the normal force exerted by the road on the car
Two tugboats pull a disabledsupertanker. Each tug exerts a constant force of 1.55 x 106 N, What is the total work they do on the supertanker
The load is applied in the L direction of the plate and B basis design values are assumed. For ultimate stress design, the tensile stress in the lug is assumed to be s = P/ [(b-d)h] and the bearing stress in the lug along the pin-lug interface is ..
If the displacement of a harmonic oscillator is given by y= 3.5 sin(10t), where the units of y are meters and t is measured in sec. Evaluate what is the frequency
Two telephone poles are separated by 40 m and connected by a wire. A bird of mass 0.50kg lands on the wire midway among the poles, causing the wire to sag 2.0 m below horizontal. Assuming the wire has negligible mass, what is the tension in the wire?
An ideal gas at 23.3°C and a pressure 1.60 105 Pa is in a container having a volume of 1.00 L. (a) Determine the number of moles of gas in the container. mol (b) The gas pushes against a piston, expanding to twice its original volume, while the press..
A thermometer defined by a thermal capacitance Cth and a thermal resistance Rth is placed in a bath whose temperature is ib(t).
According to you, an astronaut's trip from Earth to a distant planet takes 28 years. What is the distance between the planets, according to you
Determine the properties of a cotton rope of the type used in an old-fashioned jump rope, especially the strength and the "elasticity." Also, select a material (like an elastomer) that could be used as a safe replacement for a cotton rope. Provide..
The period of the earth around the sun is 1 year and its distance is 150 million km from the sun. What is the orbital velocity of the asteroid
An aluminum cup contains 225 gram of water and a 40 gram copper stirrer, all at 27°C. Compute what the mass of the aluminum cup
Standing on the surface of planet zork (which has mass M_z and radius R_z) you throw a rock(mass m straight up). At what speed was it thrown
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