The motion detector used in a physics lab sends and receives 45 kHz ultrasonic pulses A...
The motion detector used in a physics lab sends and receives 30 kHz ultrasonic pulses. A pulse goes out, reflects off the object being measured, and returns to the detector. The lab temperature is 20 ∘C. Part A) What is the wavelength of the waves emitted by the motion detector? Express your answer in millimeters. Part B) How long does it take for a pulse that reflects off an object 3.0 m away to make a round trip? Express your...
A bat at rest sends out ultrasonic sound waves at 50.5 kHz and receives them returned from an object moving directly away from it at 34.5 m/s . What is the received sound frequency?
A bat at rest sends out ultrasonic sound waves at 54.6 kHz and receives them returned from an object moving directly away from it at 24.7 m/s . What is the received sound frequency?
A bat at rest sends out ultrasonic sound waves at 51.5 kHz and receives them returned from an object moving directly away from it at 31.0 m/s .What is the received sound frequency?
A bat at rest sends out ultrasonic sound waves at 50.5 kHz and receives them returned from an object moving directly away from it at 34.0 m/s . Part A What is the received sound frequency?
A bat at rest sends out ultrasonic sound waves at 54.8 kHz and receives them returned from an object moving directly away from it at 23.8 m/s. What is the received sound frequency? Please answer in Hz and the answer is not 40,000 Hz.
In lab, you propel a cart with four known forces while using an ultrasonic motion detector to measure the cart's acceleration. Your data are as follows: Force, F (N) Acceleration, a (m/s2) 0.25 0.50 0.75 1.00 0.5 0.8 1.3 1.8 FON) 1.0 0.8 F= (0.56 kg)a + 0.00 N 0.4 0.2 0.0 a (m/s) 0.0 0.2 0.4 0.6 0.8 1.0 2 4 16 1.8 2.0 Graphing either F versus a or a versus F gives a straight line. In the...
In a physics lab, light with a wavelength of 560 nm travels in air from a laser to a photocell in a time of 17.2 ns . When a slab of glass with a thickness of 0.880 m is placed in the light beam, with the beam incident along the normal to the parallel faces of the slab, it takes the light a time of 21.0 ns to travel from the laser to the photocell. What is the wavelength of...
i have some physics questions. hopefully you can answer these all please. A block with mass m = 2.0-kg attached to the end of a spring undergoes simple harmonic motion on a horizontal frictionless surface. The oscillation period is T = 5.5-s and the oscillation amplitude is A = 13.8-cm. When the spring is unstretched the block sits at a distance L = 2.2-m from a wall. Suppose we snap the spring at the very moment the block passes through...
Question 4 to 11 plz Dr? Standing Waves on a String Physics Topics If necessary, review the following topics and relevant textbook sections from Serway / Jewett "Physics for Scientists and Engineers", 9th Ed. • Mathematics of Traveling Waves (Serway 17.2) • Speed of Waves on a String (Serway 17.3) • Superposition of Waves (Serway 18.1) • Standing Waves on a string (Serway 18.2, 18.3) Introduction Imagine two sinusoidal traveling waves with equal amplitudes and frequencies moving in opposite directions....