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The equation of a transverse wave traveling in a string is given by y=a sin(k x??t). the tension in the string is 20.0 n, a = 2 mm, k = 30 rad/m, ? = 850 rad/s. what is the wave speed? What is the linear density of the string?
You are given 65.000 cm of copper wire with diameter 7.0000 mm. At what rate is thermal energy generated in the loop
The Black Hole in the Center of the Milky Way Recent measurements show that the black hole at the center of the Milky Way galaxy, which is believed to coincide with the powerful radio source Sagittarius {\rm{A}}^ *, is 2.6 million times more massive ..
A laser beam is incident on two slits with a separation of 0.10 mm, and a screen is placed 4.00 m from the slits. what is the wavelength of the laser light
A particle with a charge of q = -5.40 nC is moving in a uniform magnetic field of vec{B}=( -1.24 T ) hat{z}. The magnetic force on the particle is measured to be vec{F}= ( -7.60×10-7 N )hat{y}. find v_x, the x component of the speed of the particl..
The eyepiece of a refracting astronomical telescope has a focal length of 9cm. the distance between objective and eyepiece is 1.80m, What is the angular magnification of the telescope
Gasoline is made up of hydrocarbons. Suppose 80% of mass of gasoline is carbon and all of this becomes CO2 in combustion. If the density of gasoline is 6.7 lb/gal, how much CO2 is emitted per gallon of gasoline burned? The atomic mass of carbon is 12..
Find the action variable for a ball with speed v bouncing between two elastic walls a distance d apart. Find the angle variable
A pendulum consisting of a ball of mass m hanging from a massless rope is dropped from a height h. How high does the ball on the pendulum rebound from its collision with the block
An electronic point source emits sound isotropic ally at a frequency of 3000 Hz and a power of 34 watts. A small microphone has an area of 0.75 cm2 and is located 158 meters from the point source. What is the power intercepted with the microphone?
two identical containers are filled to equal depths. one is filled with corn syrup (n=1.48), the other with ethyl alcohol (n=1.36). which container appears to have the greater depth
The acceleration g due to gravity is measured in two experiments. In the first experiment, the value of g was measured to be 9.85 m/s2. In the second experiment, g was 9.70 m/s2.
a 1.5kg rock is released from rest at the surface of a calm lake. if the resistance offereed by the water as ther rock
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