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Q. Two equally charged, 1.00 g} spheres are placed with 2.00 {cm} between their centers. When released, each begins to accelerate at 225 {m/s^2}. What is the magnitude of the charge on each sphere?
Q. A 1000kg experimental rocket sled on a level frictionless rail is loaded wiht 50 kg of propellant. It exhausts the propellant in a 20-s "burn". If the rocket, initially at rest, moves at 150 m/s after the burn, what impulse is experienced by the rocket sled?
At a temperature of 5800, hydrogen atoms in the solar atmosphere have typical random speeds of about 12. Assume that spectral-line broadening is simply the result of atoms moving toward us or away from us at this random speed, estimates thermal width..
A Carnot engine operating with an ideal gas takes heat energy from the hot reservoir at 500 degrees C and exhausts heat energy to the cold reservoir at 250 degrees C. If the engine does 400J of work per cycle, what is its efficiency.
A 41-kg box is thrown at a speed of 220 m/s & is brought to a halt in a collision that lasts for a time of 6.5 m/s. Find the magnitude of the average net force that acts on the box during the collision.
Inversely proportional to the square of the fields
A galvanometer with a coil resistance of 11.0 and the full-scale current of 0.150 mA is used with a shunt resistor to make an ammeter. The ammeter registers the maximum current of 4.00 mA. Find the equivalent resistance of the ammeter.
Two heavy pendula of mass m are suspended from strings of length l inside a railroad car of mass M that can roll freely on horizontal tracks (ignore the moment of inertia of the wheels).
What is linear acceleration
Write x-versus-t equations of motion
A golf ball with the initial angle of 34° lands exactly 240 m down the range on the level course.
What is the greatest amount through which the wavelength of an incident photon could change when it undergoes Compton scattering from an atom or molecule with a 19 u mass.
Two negative and two positive point charges (magnitude = 3.64mC) are positioned on opposite corners of a square (each side = 0.155 m).Determine the magnitude of the force on each charge.
Calculate the time constant that is equal to the time taken by a capacitor to fully charge or discharge.
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