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A vertical spring stretches 4.2 cm when a 14-g object is hung from it. The object is replaced with a block of mass 22 g that oscillates up and down in simple harmonic motion. Calculate the period of motion. ____s . Use the given information to find the spring constant and the period of motion.
An average froghopper insect has a mass of 12.3 mg and reaches a maximum height of 290 mm when its takeoff angle is 58 degrees above the horizontal. Find the takeoff speed of the froghoppper
In a mass spectrometer the charged particles have to reach a common specific speed. To do so, they are accelerated with an electric field, determine the direction of the magnetic force
What is the magnitude of the current in the wire as a function of time?
A 44.0-? resistor is connected in series with a 68.0-µF capacitor and a generator having a maximum voltage of 1.20E2 V, find the capacitive reactance of the circuit
Suppose you were to disconnnect the battery (without losing any of the charge on the plates) and then remove the dielectric medium. What would be the new voltage across the plates
A magnetic field of 3 Tesla is oriented into the page. A 10 cm long conducting bar is pulled to the right at a constant speed of 3.4 m/s. What is the magnitude of the current in the bar
In fair weather, over flat ground, there may be a downward electric field of 155 N/C. Calculate the charge density of the air
A father racing his son has 1/2 the kinetic energy of the son, who has 1/3 the mass of the father. What are the original speeds of the son and father
Suppose that a particle accelerator is used to move two beams of particles in opposite directions. what is the magnitude of the average current in this region
A boat takes 2.6 hrs. to travel 50 km down a river, then 5.6hrs to return. How fast is the river flowing
The clarinet is well modeled as a cylindrical pipe that is open at one end and close at the other. Find the wavelength and frequency of the third normal mode of vibration of a clarinet's air column
A circuit is pulled with a 16N force toward the right to maintain a constant speed v. What is the direction of the induced current
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