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In an echolocation lab, a student measures the time from the first click of the fingers to the first echo to be 0.0062. If the speed of sound in the room is 345 m/s, what should the student calculate for the length of the tube? (Note: This is not necessarily the same length tube you used in lab.)
A 0.30 kg mass is suspended on a string. In equilibrium the mass stretches the spring 2.0 cm downward. Calculate the total energy of the system
You walk 1140 m east and then 860 m south in a total time of 16 min. Compute your average velocity for east and south
Status Newton's First Law of motion.
A cylindrical bucket, open at the top, is 29.0cm high and 12.0cm in diameter. How High will the water in the bucket rise
An automobile with a mass of 2250 slugs is driven around a circular curve, What is the centripetal force on the car
An electric motor with a power of 3W is used to lift a .2 kg mass a height of 0.5 meters in 3.0 seconds, since total energy must be conserved
The current in an electron beam in a cathode-ray tube is measured to be 70 uA. How many electrons hit the screen in 5.0s
Two resistors are connected in a series to a 15V battery. The voltage drop across the first resistor is 3.5V, What is the resistance of the two resitors
A 2.54 kg particle moving along the x-axis experiences the force shown, where Fmax=6.85 N, Fmin=-6.85 N, d1=1.27 m, d2=2.54 m, d3=3.81 m, and d4=5.08 m. At x=0.00 m the particle's velocity is 3.93 m/s. What is its velocity at x=2.54 m?
A 17 ?F capacitor is charged to 20 V and is then connected across a 11 mH inductor. What is the frequency of oscillation of the circuit
A dentist's drill accelerates from rest at 640rad/s2for 2.30s and then runs at constant angular velocity for 6.50s. Through how many total revolutions has the drill turned
The Hall effect can be used to determine the density of mobile electrons in a conductor. Find the density of mobile electrons in the material
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