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Planners of an experiment are evaluating the design of a sphere of radius R that is to be filled with helium (0°C, 1 atm pressure). Ultrathin silver foil of thickness T will be used to make the sphere, and the designers claim that the mass of helium in the sphere will equal the mass of silver used. Assuming that T is much less than R, calculate the ratio T/R for such a sphere.
Calculate the acceleration of the arrow in the bow.
What is the buoyant force on a helium balloon in air if the balloon is spherical with diameter 28.5cm
Your temperature is 98.4 degrees fahrenheit. what is the wavelength corresponding to the largest intensity
A ball is launched from the ground with an initial velocity of 35 m/s at an angle of 55°. It lands some distance away on level ground. How far away does the ball land
A piece of aluminum (c=0.910 J/gC) of mass 200g at 80C is droppedinto a foam cup filled with 100ml of water at 20C. Once the systemreaches equilibrium, what is the final temperature of the water and aluminum?
A water pistol aimed horizontally projects a stream of water with an initial speed of 6.50 m/s. How far does the water drop in moving 1.90 m horizontally
A rainbow trout is an extremely cautious fish constantly monitoring the surface of the stream looking for both food and predators. A trout escapes immediately, once noticing something suspicious, like a fisherman caring his fishing gears.
A convex mirror, like the passenger-side rearview mirror on a car, has a focal length of -2.3m. An object is 4.6m from the mirror. Use ray tracing to determine the location of its image
A 80 kg football player stand at the end of a uniform 8m, 50kg diving board supported as shown. Determine the forces exerted by the two supports.
A projectile is shot from the ground at an angle of 55 degrees with respect to the horizontal,find the horizontal component and the vertical component of initial velocity
A 20.0- rock is sliding on a rough, horizontal surface at 8.00 and eventually stops due to friction. What is the total work they do on the supertanker
calculate the average acceleration in m/s^2 (meter per second square), using a coordinate system with the X axis in the direction of the car's original motion and the Y axis toward the side of the road to which the car skids.
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