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A copper ball with a radius of 1.1 cm is heated until its diameter has increasedby 0.23 mm. Assuming a roomtemperature of 22°C, find the final temperature of the ball.
During an initial stage of construction, the beam is not to be bolted to the wall, but to be held in place solely by friction. What is the least coefficient of friction between the beam and the wall for the beam to remain in static equilibrium.
When 2.1 mol of oxygen (O2)gas is heated at constant pressure starting at 0°C, how muchenergy must be added to the gas as heat to quadruple its volume? (The molecules rotate but donot oscillate.)
An alternating source drives a series RLC circuit with an emf amplitude of 6.07 V, at a phase angle of +33.3°. what is the potential difference across the inductor
Calculate the equilibrium concentration of dissolved oxygen in 15celcius dgree water at 1atm and again at 3,000m elevation Using Henry's law, P vs z equation
q1. the rotational inertia of a collapsing spinning star changes to 45 its initial value. what is the ratio of new
A softball is hit into the air (ignore air resistance) at an angleof 35 deg at a height of 0.7m. It barely goes over a fence 2m tall which is 60maway. What is the initial velocity of the ball?
Two point charges q1 = 4.0 ?C and q2 = -8.0 ?C are placed along the x-axis at x1 = 0 m and x2 = 0.20 m, find the electric potential energy of this system of charges
q1. every day our earth receives 1.55times1022 j energy from the sun. if we were able to use 0.85 percent of this
trumpet creates a sound intensity level of 1.23 x 10^2 dB at a distance of 0.80 m. What is the sound intensity of a trumpet
A lump of mass 1.0 kg falls on it and sticks to the surface at a distance 0.7 m from the center. a) calculate the new angular speed of the disc b) if the lump gets unstuck and rolls of the disc.
The National Aeronautics and Space Administration (NASA) studies the physiological effects of large accelerations on astronauts. At what speed must the chamber move so that an astronaut is subjected to 2.48 times the acceleration due to gravity
Two parallel plates having charges of equal magnitude but opposite sign are separated by 24.0 cm. Determine the force on the proton
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