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Suppose the tension in a cord is 12.0 N. If the speed of a wave in the cord is 9.50 m/s, then what must be the linear mass density of the cord?
In an experiment on the transport of nutrients in a plant's root structure, two radioactive nuclides X and Y are used. What is the half-life of isotope X
Smoking causes blood vessels to constrict. If the average blood vessel radius of a smoker decreases 1.6% Calculate the needed percent increase in pressure
Figure the y-component of the magnetic force acting on a segment of wire of length L = 21.0 cm
Two parallel plates are held at potentials of +229V and ?59V, An electron is initially placed halfway between the plates, Find its kinetic energy when it hits the positive plate
A skier traveling 11.0 m/s reaches the foot of a steady upward 19 degree incline and glides 16m up along this slope before coming to rest. compute the average coefficient of friction
The bullet remains in the block, and after the impact the block lands d = 2.2 m from the bottom of the table. Identify the initial speed of the bullet.
A cyclist starts from rest and coasts down a 4.0?hill. The mass of the cyclist plus bicycle is 85 kg. Ignore air resistance and friction. How fast is the cyclist going
Write down an expression for the efficiency of the air cart bumper in terms of the initial and final kinetic energy of the cart. What defines a collision as elastic or inelastic.
A current of -3.70 A is located 5.51 cm along the x axis, that is, at the point (5.51,0.00) cm. A current of -6.15 A is located 4.08 cm along the y axis, Find the magnetic field at the origin
A 64 kg person on skis is going down a hill sloped at 30° from the horizontal. The coefficient of friction between the skis and the snow is 0.15. What would be the magnitude of acceleration.
an electron microscope accelerates an electron (mass of electron is 9.11x10^-31 kg) from rest to 2.8 x 10^7 m/s in a distance of 2.80 cm, what is the average force on the electron
Two point charges q_1 = 2.10 nC and q_2 = -6.10 nC are 0.100 {rm{ m}} apart. Point A is midway between them; point B is 0.080 {rm{ m}} from q_1 and 0.060 {rm m} from q_2 Take an electric potential to be zero at infinity.
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