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A 2.18-m-long diving board of mass 13.2 kg is 3.00 m above the water. It has two attachments holding it in place. One is located at the very back end of the board, and the other is 25.0 cm away from that end.
(a) Assuming that the board has uniform density, find the force acting on each attachment.b) If a diver of mass 69.3 kg is standing on the front end, what are the forces acting on the two attachments?
A charge of +6.0µC experiences a force of 2.0 mN in the +x-direction at a certain point in space. What was the electric field there before the charge was placed there
A 75?kg jogger runs with a speed of 4.2m/s, What is the jogger's de Broglie wavelength
An energy of 28.0 eV is required to ionize a molecule of the gas inside a Geiger tube, What maximum number of ion pairs can it create
Astronauts use a centrifuge to simulate the acceleration of a rocket launch, What is the astronaut's tangential acceleration during the first 20.0s
At a pressure of 0.0760 atm a constant-volume ideal gas thermometer reads a temperature of 345 K. What is the thermometer's triple point pressure, Pt
A soccer ball is kicked with the initial speed of 10.8 m/s . After 0.720 s it is at its highest point. What was its initial direction of motion
Calculate velocity of the skydiver of mass m=80kg as a function of time. The air drag coefficient D=100g/m=0.1kg/m.
Calculate the specific heat of a metal from the following data. A container made of the metal has a mass of 3.3 kg and contains 15 kg of water. A 1.0 kg piece of the metal initially at a temperature of 170°C is dropped into the water
The aorta carries blood away from the heart at a speed of about 40 cm/s and has a radius of approximately 1.1 cm. determine the approximate number of capillaries in the human body
A 220 g air-track glider is attached to a spring. The glider is pushed in 12cm against the spring, and then released. A student with a stopwatch finds that 16 oscillations take 11.5.
one capacitor with two flat conductors are seperated with 4mm. the area of each plate is 5m^2. one plate has charge of +200mC , calculate the capacitance of the device
The atomic number of lead is 82. The alpha particle is a helium nucleus, with atomic number 2.
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