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Object O1 is 15.2 cm to the left of a converging lens with a 11.8-cm focal length. A second lens is positioned 10.0 cm to the right of the first lens and is observed to form a virtual image at the position of the original object O1.(a) What is the focal length of the second lens?
You have a circular swimming pool with a diameter of 3.60 m. If you pump water into the pool at a rate of 1.87 x 104 cm3/s, how fast is the level of the water rising
A horizontal board weighing 232.0 Nis supported at points A and B in the figure below. The plankserves as a platform for a painter, who weighs 571.0 N. Find the maximum distance D, suchthat the plank will not tip, no matter where the painter stands.(..
A uniform, spherical cloud of interstellar gas has mass 2.0x10^30 kg, and radius 1.0x10^13 m and is initially rotating with a period of 1.4x10^6 yrs. what will be the star's rotational period
Calculate the force required to pull a copper ball of radius 3.00 cm upward through a fluid at the constant speed 6.00 cm/s. Take the drag force to be proportional to the speed, with proportionality constant 0.950 kg/s. Ignore the buoyant force.
An x-ray photon of initial energy 50.0 keV Compton scatters from an electron that is initially at rest. find the wavelength of the back-scattered photon
The graph shows the component of a force acting on an object, Find the work done by the force over the specified intervals of displacement
The human eardrum has an area of 5.0×10-5 m2. What is the sound power at the threshold of pain
A 7.8 cm diameter wire coil is initially oriented so that its plane is perpendicular to a magnetic field of 0.63 T pointing up. What is the average induced emf in the coil
A 5.29-kg ball hangs from the top of a vertical pole by a 2.09-m-long string. Calculate the angle, between 0° and 90°, that the string makes with the pole
A fire hose must be able to shoot a stream of water a specified height, straight up. Calculate the gauge pressure (difference between actual pressure
Oppositely charged parallel plates are separated by 5.35 mm. A potential difference of600 V exists between the plates. What is the magnitude of the electric field strength between the plates?
Alpha particles are accelerated through a potential difference of 1500 volts and then enter a magnetic field 0.4T perpendicular to their direction of motion. Calculate the radius of the circular path that they traverse. An alpha particle has mass 6.6..
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