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Two bicyclists, starting at the same place, are riding toward the same campground by two different routes. One cyclist rides 1360 m due east and then turns due north and travels another 1430 m before reaching the camp ground. The second cyclist starts out by heading due north for 2060 m and then turns and heads directly toward the camp ground.
A bat strikes a 0.145 kg baseball. Just before impact, the ball is traveling horizontally to the right at 50.0 m/s, What is the horizontal component of the impulse the bat imparts to the ball
You take a set of measurements for the wavelengths and frequencies of standing waves on a string that is under a tension of 1.96 N. What is the linear mass density of the string, including its uncertainty
A magnetic-field technique for stabilizing a He-Ne laser to 2parts in 1010has been patented. At 632.8 nm, what would be the coherence length of a laser with such frquency stability
In the Bohr model of the hydrogen atom, an electron (mass m=9.1×10?31kg) orbits a proton at a distance of 5.3×10?11m. How many revolutions per second does the electron make
the illumination lights in an operating room use a concave mirror to focus an image of a bright lamp onto the surgical
A 3-m2 hot black surface at 80°C is losing heat to the surrounding air at 25°C by convection with a convection heat transfer coefficient of 12 W/m2.°C, Determine the total rate of heat loss from the surface
between two parallel plates that are 0.02 m apart there exists a voltage of 50 v and an electric field of 2500 nc. a
an electric power line carries a current of 1400 a in a location where the earths magnetic field is 6.0 ? 10-5 t. the
an 11.0 m 230 n uniform ladder rests against a smooth wall. the coefficient of static friction between the ladder and
A 1.5 kg mass is moving in a circle of radius 2 m on a flat frictionless table at the end of a string. What is the angular momentum of the mass
A football is kicked straight up into the air; it hits the ground 3.4s later. What was the greatest height reached by the ball? With what speed did it leave the kicker's foot
You are so tired after studying that you leave all of these household devices turned on for 13.0 hours, Calculate the cost (in dollars) of the electric bill
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