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A 5.0 g hollow plastic ball is attached by a thread to the bottom of a beaker. When the beaker is filled with water so that the ball is completely submerged, the tension in the thread is 2.0 multiplied by 10-2 N. Decide the diameter of the ball.
A sound wave generated by a source of frequency 440 Hz is moving through 25 oC air. What is the wavelength of the sound wave inside the steel
Three point charges are arranged at the corners of a square, with charge -Q on both the particle at the upper left corner and the particle at the lower right corner and with charge +2Q on the particle at the lower left corner.
A 32.2 uF capacitor is connected to a 50.2 ohm resistor and a generator whose rms output is 37.2 V at 50.0 Hz. Calculate the rms current in the circuit. Calculate the phase angle for the circuit
An optometrist has a choice to give a patient either regular glasses or contact lenses to correct nearsightedness. Usually, regular glasses sit a few centimeters in front of the eye and contact lenses right on the eye. What do you think, the power..
A bug is splattered on a car windshield. Evaluate the magnitude of the windshield's force on the bug to the magnitude of the bug's force on the windshield.
A beam of particles is directed at a 0.015-kg tumor. There are 1.3 × 1010 particles per second reaching the tumor, Find the biologically equivalent dose given to the tumor in 21 s
An object falls from a height h from rest. If it travels a fraction of the total height of 0.6995 in the last 1.00 s, Find the height of its fall
A laboratory technician drops a 0.0770-kg sample of unknown material, at a temperature of 100.0°C, into a calorimeter. The calorimeter can, initially at 23.0°C, is made of 0.150 kg of copper and contains 0.200 kg of water. The final temperature of th..
How far from a concave mirror of radius 0.25 m must an object be place for a real image to be formed 1 m from the mirror? What is the magnification of that image
A thermodynamic system undergoes a process in which its internal energy decreases by 455 J. Find the energy transferred from it by heat
An earth satellite of the mass 3500 kg moves in a circular orbit with an orbital speed of 3.3 km/s. Find the elevation of the satellite over the Earth surface
A 2,200-kg car moving east at 10.0 m/s collides with a 3,000-kg car moving north. The cars stick together and move as a unit after the collision, Find the speed of the 3,000-kg car before the collision
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