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Question: A string vibrates in its fundamental mode with a frequency of 380 Hz. The string is 0.73 m long and has a mass of 1.51 g. With what tension in N must the string be stretched?
You have been asked to design a "ballistic spring system" to measure the speed of bullets. A bullet of mass m is fired into a block of mass M. What fraction of the bullet's energy is "lost"
A ball is placed on an edge of a cliff and it is kicked by a soccer player at 20.0 m/s at an angle of ? = 30? above the horizontal, Find the height of the cliff
An air parcel occupied by an ideal gas (T1 = 255 K, V1 = 1500m3, m1 = 1680 kg) collides and mixes with a second air parcel occupied by a second ideal gas (T2 = 280 K, V2 = 1200 m3, m2 = 1392 kg). Assuming the specific heat capacities of the gases in ..
Emilie wishes to fly to Phun City, a place where Physics Geeksrule the land, loacted 800 km [N] of her present postion. what will be her observed ground velocity
A person 1.6 m tall stands 2.9 m from a reflecting globe in a garden. (a) If the diameter of the globe is 33 cm, where is the image of the person, relative to the surface of the globe?
A proton is passing through the uniform, 0.500-T magnetic field is directed along the x-axis. At t = 0 the proton has velocity components vx = 1.50 × 105 m/s, vy = 0, and vz = 2.00 × 105 m/s. Find the radius of the resulting helical path
A 0.88 kg ball drops vertically onto a floor, hitting witha speed of 33 m/s. It rebounds with an initial speed of 13m/s. What impulse acts on the ball during the contact
A person weighs 691 N in air but only 499 N when standing in water up to the hips. Find the volume of each of the person's legs
a mass m neutron has elastic collision with a mass m' stillnucleus. How much kinetic energy does the neutron lose
A radio tuner is built by connecting an L=0.41mH inductor and variable capacitor in series with an antenna. The driving voltage is provided by the radiowaves that pass through the antenna, and the total internal resistance of the circuit is R=1.2O..
(a) Calculate the lowest energy of the electron in He+. Is it lower than that of H (b) If this electron absorbs a photon and makes a transition to the 2p orbital
A 23.2-mW laser beam of diameter 2.18 mm is reflected at normal incidence by a perfectly reflecting mirror. Calculate the radiation pressure on the mirror
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