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The 20 g head of a bobble-head doll oscillates in SHM at a frequency fo 3.4 Hz.
(a) What is the spring constant of the spring on which the head is mounted?
(b) Suppose the head is pushed 3.4 cm against the spring, then released. What is the head's maximum speed as it oscillates?
(c) The amplitude of the head's oscillation decreases to 0.5 cm in 3.5 s. What is the head's damping constant?
A person applies a horizontal force to the top edge of a crate to get it to tip forward. Find the minimum force needed to make the crate start tipping
If the create has a mass of 110 and is 1.60 tall and 0.80 in depth and width, what is the minimum force needed to make the crate start tipping? (Assume the center of mass of the crate is at its center and static friction great enough to prevent sl..
You wish to design a velocity selector that will allow protons to pass through only if they have a speed of 500 m/s, You decide to produce this electric field using a parallel-plate capacitor with a plate spacing of 1.0 mm. What is the electric pote..
A radioactive source in the form of a metallic sphere of radius 10^-2 m emits beta particles at the rate of 10^10 particles per second. The source is electrically insulated. What is the time required for its potential to be raised by 4 V assuming ..
An 7.60-cm-diameter, 310 sphere is released from rest at the top of a 1.70-m-long, 20.0 incline. It rolls, without slipping, to the bottom. What fraction of its kinetic energy is rotational
An unspecified force causes a 0.2-kg object to accelerate at 0.4 m/s2. find the acceleration (in m/s2) of the heavier object
A proton with a speed of 3.23 104 m/s is moving from infinity directly toward a second proton. Assuming that the second proton is fixed in place, find the position where the moving proton stops momentarily before turning around.
A heater coil connected to a 240-Vrms ac line has a resistance of 45. what is the average power used? What is the maximum value of the instantaneous power?
global positioning system gps satellites area at altitudes of 20000 km as measured from the center of the earth. at
A tennis player swings her 1000g racket with a speed of 12m/s . She hits a 60g tennis ball that was approaching her at a speed of 17m/s. what is the average force that the racket exerts on the ball
A water pistol aimed horizontally projects a stream of water with an initial speed of 6.90 m/s. How far does the water drop in moving 1.50 m horizontally? How far does it travel before dropping a vertical distanceof 2.00 cm?
You have been called to testify as an expert witness in a trial involving an automobile accident, determine that the coefficient of kinetic friction between the wheels and the pavement at the time of the accident was 0.59
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