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Water is poured into a container that has a leak. The mass m of the water is given as a function of time t by m = 5.2t0.8 - 2.6t + 22, with t = 0, m in grams, and t in seconds. In kilograms per minute, what is the rate of mass change at (a) t = 1.6 s and (b) t = 4.6 s?
A 109-kg horizontal platform is a uniform disk of radius 1.61 m and can rotate about the vertical axis through its center. A 69.9-kg person stands on the platform at a distance of 1.07 m from the center and a 29.9-kg dog sits on the platform near the..
A piece of Nichrome wire has a radius of 6.2 x 10-4 m. It is used in a laboratory to make a heater that dissipates 4.40×102 W of power when connected to a voltage source of 130 V. estimate the necessary length of wire
During a testing process, a worker in a factory mounts a bicycle wheel on a stationary stand and applies a tangential resistive force of 120 N to the tire's rim. what force must be applied to the chain
The deflection plates in an oscilloscope are 10cm by 2cm with a gap distance of 1mm. A hundred volt potential difference is suddenly applied to the initial uncharged plates through a 1000 ohm resistor in series with the deflection plates.
A spaceship is observed from the Earth to be moving toward a star at a speed of 0.80 c. how much time passes on the space ship while traveling to the star
A nuclear power plant generates 3000 MW of heat energy from nuclear reactions in the reactor's core. What is the plant's actual efficiency
A red laser pointer with a wavelength of 635 nm is shined on a double slit producing a diffraction pattern on a screen that is 1.75 m behind the double slit. The central maximum of the diffraction pattern has a width of 4.30 cm, and the fourth bright..
A potter's wheel -- a thick stone disk of radius 0.500 m and mass 110 kg -- is freely rotating at 50.0 rev/min. Find the effective coefficient of kinetic friction between the wheel and the rag
In a period of 1.0 s, 5.0 x10^23 nitrogen molecules strike a wall of area 7.80 cm2. If the molecules move at 270 m/s and strike wall head on in a perfectly elastic collision, find the pressure exerted on the wall. (The mass of one N2 molecule is 4..
An undersea research chamber is spherical with an external diameter of 3.50 . The mass of the chamber, when occupied, is 21900 . It is anchored to the sea bottom by a cable. What is the buoyant force on the chamber? -Found to be 224410.2 N ***What is..
Calaculate the position and size of image
A satellite weighing 500 kg is in a circular orbit around the earth. It takes exactly 3 hours to go around the earth. What is the force of gravity on this satellite
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