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Raindrops make an angle ? with the vertical when viewed through a moving train window (Fig). If the speed of the train is vr, what is the speed of the raindrops in the reference frame of the Earth in which they are assumed to fall vertically?
Frame S' travels at speed V_1 along the x axis of frame S (in the standard configuration). Frame S'' travels at speed V_2 along the x'' axis of frame S'; (also in the standard configuration). By applying the standard Lorentz transformation twice find..
a 16.0-mw helium-neon laser emits a beam of circular cross section with a diameter of 2.85 mm.a find the maximum
The speed of sound at 0oC is 331 m/s. At another temperature, the speed of sound is measured to be 343 m/s. Evaluate what is this temperature
For safety in climbing, a mountaineer uses a nylon rope that is 60 m long and 1.0 cm in diameter. Find its Young's modulus
a disk of mass m and radius r starts form rest at the top of a 30 degree incline with a height of 2m. if the disk rolls
A football player with a mass of 87 kg and a speed of 2.1 m/s collides head-on with a player from the opposing team whose mass is 120 kg, Find the speed of the players after the collision
A gun shoots a 5.00 gramsbullet with a horizontal velocity of 1000m/s. the bullet strikes atree and penetrates to a depth of 10.0 meters. find the mechanicalenergy lost to friction in bringing the bullet to rest.
A cylindrical storage tank has a radius of 1.22 m. When filled to a height of 3.71 m, it holda 14 300 kg of a liquid industrial solvent.
A skier with a mass of 66.8 kg starts from rest and skis down an icy (frictionless) slope that has a length of 55.1 m at an angle of 26.2° with respect to the horizontal. find the speed of the skier at the bottom of the slope
At a distance of 14000 kilometer from some planet's center, the acceleration of gravity is 32 m/s2. Estimate what is the acceleration of gravity at a point 28000 kilometer from the planets center
Nearly all battery powered devices with multiple batteries have their batteries connected in series. Could there be any advantage to connecting batteries in parallel? Describe your response in 100 words or less.
in the javelin throw at a track-and-field event the javelin is launched at a speed of 30.0 ms at an angle of 39.2 deg
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