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You are at a state fair. A sideshow barker claims that the star of the show can throw a 7.3 kilogram Olympic-style hammer faster than a speeding bullet. You recall that bullets travel at several hundreds of meters per second. The burly hammer thrower whirls the hammer in a circle that you estimate to be 2.4 meter in diameter. You guess the chain holding the hammer makes an angle of 10 degree with the horizontal. When the hammer flies off, determine is it really moving faster than a bullet?
The velocity gradient u(y) near the surface of a single plate over which a fluid flows is given by the function: u(y) = ay + by^2 + cy^3. Where y is the distance from the plate's surface and a, b and c are constants with the values: a = 10.0s^-1, ..
The middle C string on a piano is under a tension of 882 N. The period and wavelength of a wave on this string are 3.82 10-3 s, Find the linear density of the string
A farsighted man uses eyeglasses by a refractive power of 3.80 Diopters. Wearing the glasses 0.025m from his eyes, he is able to read books held no closer than 0.280 m from his eyes. He would like a prescription for contact lenses to serve the same r..
two point charges are placed along the horizontal axis with the following values 3.0 microc at x0 and -7.0 microc at
A moon orbits a planet of unknown mass with a period of 1.8 days. If the radius of the moon's orbit is 420,000,000 meters, find the mass of the planet
An unknown gas is introduced into the aforementioned apparatus using the same tuning fork, and the first resonance occurs when the air column is 6.14 cm long. Find the speed of sound in the gas. m/s
A motorist drives south at 28.0 m/s for 3.00 min, then turns west and travels at 25.0 m/s for 2.00 min, find the total vector displacement
A street light is supported by two wires and each makes a different angle from each other. Find the tension in each wire if the street light has a mass of 60.0 kg
a block of mass 12.0 kg is connected to a spring on a horizontal frictionless surface. write the expression for the position of the block as the function of time
An electron collides elastically with a stationary hydrogen atom. The mass of the hydrogen atom is 1837 times that of the electron. Assume that all motion, before and after the collision, occursalong the same straight line.
A 46-cm-long wire with a mass of 10.5 g is under a tension of 52.0 N. Both ends of the wire are held rigidly while it is plucked. What is the speed of the waves on the wire
Two long, parallel wires separated by a distance, d, carry currents in opposite directions. If the left-hand wire carries a current i/3, and the right-hand wire carries a current i, determine where the magnetic field is zero. (Use the following as ne..
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