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A person whose mass is 72 kg sits on a piston of a hydraulic lift. The radius of this piston is 0.18 m, while radius of the other piston is 0.019 m. What is the mass of a puppy that sits on the other piston and balances the person?
how much time passes before the brick lands on the ground.
The beam emerging from a ruby laser (wavelength 694.3 nm) passes through a circular aperture 4.7 mm in diameter. If the spread of the beam is limited only by diffraction, what is the angular speed of the beam
A wave is described by y = 0.020 9 sin(kx - ?t), where k = 2.05 rad/m, ? = 3.67 rad/s, x and y are in meters, and t is in seconds, Determine the amplitude, wavelength, frequency and of the wave
A very distant galaxy has an apparent bolometric magnitude of +23.5. Determine the measured flux of photons
The equation of a transverse wave traveling along a very long string is y = 5.0 sin (0.055 ?x + 6.0 ?t), Determine the amplitude of propagation of the wave
Two astronauts, each having a mass of 79.0 kg, are connected by a 10.5 m rope of negligible mass. Calculate the rotational energy of the system
Two parallel, uniformly charged, infinitely long wires carry opposite charges with a linear charge density ? = 2.15 ?C/m and are 6.69 cm apart. What is the magnitude of the electric field at a point midway between them and 54.3 cm above the plane ..
An air-filled parallel-plate capacitor has a capacitance of 1.1 pF. The separation of the plates is doubled and wax is inserted between them, Find the dielectric constant of the wax
A truck is traveling at 11.4 m/s down a hill when the brakes on all four wheels lock. How far does the truck skid before coming to a stop
A car starts from rest at a stop sign. It accelerates at 4 for 6.4, coasts for 1.5, and then slows down at a rate of 3.5 for next stop sign. How far apart are the stop signs.
Each driver has a mass of 60.00 kg. Including the drivers, the total vehicle masses are 880 kg for the car and 4080 kg for the truck. The collision time is 0.120s. select coordinates such that the truck is initially moving in the positive x direction..
A piece of Nichrome wire has a radius of 5.00 x10-4 m. It is used in a laboratory to make a heater that uses 2.00 102 W of power when connected to a voltage source of 120 V. Ignoring an effect of temperature on resistance, estimate the necessary l..
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