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1) Explain why an object too far from the motion detector will produce an incorrect distance reading?
2) Look up an approximate value for the speed in air for 49 kHz ultrasound.Record your value in m/s and give the source of your information.
3) Estimate the dead time of the ultrasonic detector after emitting a pulse.
4) Explain why only consider one-dimensional motion when using a single motion detector. Based on the definition of velocity, describe what you should observe in the velocity vs. time graph if you were measuring a stationary, distant object and you suddenly slid an object into the beam from slide.
A pulsar is a rapidly rotating neutron star that continuously emits a beam of radio waves in a searchlight manner. Each time the pulsar makes one revolution, the rotation beam sweeps across the earth, & the earth receives a pulse of radio waves. ..
A car drives straight off the edge of a cliff that is 60 m high. The police at the scene of the accident observed that the point of impact is 134 m from the base of the cliff. How fast was the car traveling while it went over the cliff.
Will the car hit the barricade
(a) What is the rate of energy radiation per unit area of a blackbody at a temperature of 294 K. (b) What is the rate of energy radiation per unit area of a blackbody at a temperature of 2940 K
When a second pipe is played at the same time, a 1.40 Hz beat note is heard. By how much is the second pipe too long.
the hanging object has a mass of m1 = 0.370 kg; the sliding block has a mass of m2 = 0.780 kg; and the pulley is a hollow cylinder with a mass of M = 0.350 kg, Find the angular speed of the pulley at the same moment
Consider two masses m1 and m2 at the top of two frictionless inclined planes. Both masses start from rest at the same height. However, the plane on which m1 site is at an angle of 30 degrees with the horizontal,
A 7.00 uF capacitor is initially charged to a potential of 16.0V. What is the total energy stored in this circuit
A 60 kg car moving towards the right at 5 m/s collides head on with an 50 kg car moving towards the left at 6 m/s, find the velocity of the combined bodies
The electrons in the beam of a television tube have a kinetic energy of 3.26 × 10-15 J. What is the acceleration of an electron due to this field component
An electron moves in the positive x-direction a distance of 2.31 m in 2.85·10-8 s, bounces off a moving proton, What is the average speed of the electron
q1. charge of uniform density 80 ncm3 is distributed throughout a hollow cylinder region formed by two coaxial
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