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A block is tied to a string attached to the bottom of a fish tank. It is then attached to a block that floats halfway submerged on the top of the water. The mass of the top block is 20g, and the volume is 100cm^3. The mass of the bottom block is 125 g and the volume is 150 cm^3. Decide the tension in each string. Show work, including force diagrams.
q1. a lawn roller is rolled across a lawn by a force of 128 n along the direction of the handle that is 16.1 above the
An engine takes in 8000 cal of heat and exhausts 4000 cal of heat each minute it is running. How much work does the engine perform each minute
If a 4 cm piece of insulation is added to the pine ceiling kpine = 0.120 J/msC kinsul = 0.042 J/msC If a 4 cm piece of insulation is added to the pine ceiling , find the interface temperature for the pine and insulation.
If a car of mass 1000 kg is moving along a highway at 92 km/h, what is car's kinetic energy as determined by someone standing alongside the highway.
A paperweight, when weighed in air, has a weight of W = 7.4N. When completely immersed in water, though, it has a weight of Win water = 4.40 N. Find the volume of the paperweight.
A 20.0-kg box rests on a horizontal surface. The coefficient of static and kinetic friction between the box and the surface are 0.30 and 0.10 respectively. what is the friction force between the box and the surface
A 8 m x 11 m swimming pool slopes linearly from a 1 m depth at one end to a 3.8 m depth at the other. What is the mass of water.
Three charges are on the y-axis. Two of the charges, each ?2q, are locatedy=±d, and the third charge, +4q, Derive an expression for the electric field at a point P on the x-axis
A block is launched up a frictionless ramp that makes an angle of 35 degree to the horizontal. If the block's initial speed is 2.2 m/s, determine how far up the ramp does it slide
The two metal objects in the figure have net charges of +68 pC and -68 pC, which result in a 28 V potential difference between them, What is the capacitance in picofarads of the system
the cheetah is one of the fastest accelerating animals for it can go from rest to 32.3 ms in 3.52 s. if its mass is 120
A nuclear power plant has a reactor that produces heat at the rate of 838MW. this heat is used to produce 253MW of mechanical power to drive an electrical generator. a) at what rate is heat discarded to the environment by this power plant? b) what..
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