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A sphere of radius r starts from rest and rolls withoutslipping along a curved surface, dropping through a verticaldistance of 0.411 m. Find the final speedv of the sphere's center of mass.
A helicopter, starting at rest, accelerates straight upfrom the roof of a hospital. The lifting forces does work inraising the helicopter. An 810-kg helicopter rises from rest to aspeed of 7.0 m/s in a time of 3.5s. During this time it climbs to a..
what would happen to the speed of sound in air if the atmosphere were mostly argon rather than nitrogen?
When a car's starter is in use, it draws a large current. The car'slights draw much less current. As a certain car is starting, thecurrent through the battery is 61.8 A and the potential difference across the battery terminals is8.91 V.
Three horizontal forces act on a packing crate on a horizontal surface: 600 N to the left, 200 N to the right, and friction. The packing crate remains at rest. The weight of the crate is 400 N. If the 600 N force is removed, the net force acting on t..
A certain orthodontist uses a wire brace to align a patient's crooked tooth as in the figure below, Find the magnitude of the net force exerted by the wire on the crooked tooth
A 0.38 kg iron horseshoe that is initially at 580°C is dropped into a bucket containing 21.8kg of water at 21 °C. What is the final equilibrium temperature (in °C)? Avoid any heat transfer to or from the surroundings. Do not enter units.
One of James BOnd's adversaries is standing on a frozen lake; there is no friction between his feet and the ice. what is the magnitude of his horizontal recoil velocity
i accurately draw the field both scalar equipotential and vector electric lines between a positive point charge and an
A block slides down a frictionless plane having an inclination of17.0°. If the block starts from rest at the top and the length of thisincline is 1.53 m, find the acceleration of the block.
An electron is located on a pinpoint having a diameter of 5.30 µm. What is the minimum uncertainty in the speed of the electron
Fraunhofar double slit diffraction pattern is observed onthe focal plane of a lens of focal length 0.5m;wavelength ofincident light used is 500nm; Find the distance between their centres
A 1.00-cm-high object is placed 4.70 cm to the left of a converging lens of focal length 7.60 cm. Find the position and height of the final image
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