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A hammer strikes one end of a thick iron rail of length 8.5m. A microphone located at the opposite end of the rail detects two pulses of sound, one that travels through the air and a longitudinal wave that travels through the rail.a) Which oulse reaches the microphone first?b) Find the separation in time between the arrivals of the two pulses.
As a spacecraft approaches a planet, the rocket engines on it are fired (turned on) to slow it down so it will go into orbit around the planet. how long (in minutes) must the engines be fired
A force vector points at an angle of 64.9 ° above the +x axis. It has a y component of +276 Newton's (N). Find out (a) magnitude and (b) x component of the force vector.
A 0.58-kg object connected to a light spring with a force constant of 21.0 N/m oscillates on a frictionless horizontal surface. Determine the maximum speed of the object
After flying for 15 min in a wind blowing 42 km/h at an angle of 32° south of east, What is the speed of the airplane relative to the air
Two capacitors are connected in parallel across the terminals of abattery. One has a capacitance of 2.9 uF and the other acapacitance of 3.9 uF. These two capacitors together store 7.4 x10-5 C of charge. What is the voltage of the battery?
The supertanker Globtik London has a mass of 220,000 metric tons when empty and it can carry up to 440,000 metric tons of oil when fully loaded. What is the draft of the fully loaded tanker
A gas is orignally contained within a container of volume 100m^3 and is held at a pressure of 1 atmosphere and temperature of 15C, How many moles of gas were orignally contained
A car of mass 1200kg is heading east at 10m/s. A second car of mass 1500kg is heading west at 20.0m/s. They meet in an elastic collision. What was the initial kinetic energy of the system
If the police car accelerates uniformly at 3.00m/s^2 and overtakes the speeder after accelerating for 9.00 s, illustrate what was the speeder's speed?
An object with total mass mtotal = 15.8 kg is sitting at rest when it explodes into three pieces. One piece with mass m1 = 4.6 kg moves up and to the left at an angle of ?1 = 19.0° above the –x axis with a speed of v1 = 27.8 m/s
The top of a tower much like the leaning bell tower at Pisa, Italy, moves toward the south at an average rate of 1.4 mm/y, what is the average angular speed of the tower's top about its base
Four identical metallic objects carry the following charges: +1.18, +6.89, -4.92, and -9.56C. The objects are brought simultaneously into contact, What is the final charge on each object
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