A hydrogen atom, initially at rest, absorbs an ultraviolet photon with a wavelength of 1 =...
A hydrogen atom, initially at rest, absorbs an ultraviolet photon with a wavelength of λ=113.5nm.What is the atom's final speed if it now emits an identical photon in a direction that is perpendicular to the direction of motion of the original photon?
please help. thank you For a science experiment, you would like to use the Doppler effect to double the perceived frequency of a harmonica, from the 261.7. Hx fone (middle C) that it emits, to 440.0 Hz (A note). Part A Which strategy will accomplish your goal more easily O move the harmonica move the observer Submit Request Awwer Part B Calculate the speed the harmonica must have in order for a stationary observer to hear 440.0 Ha Express your...
For a science experiment, you would like to use the Doppler effect to double the perceived frequency of a harmonica, from the 261.7-Hz tone (middle C) that it emits, to 587.3 Hz (D5 note). (Parts a-c). Part A Which strategy will accomplish your goal more easily: move the harmonica move the observer Submit Request Answer Part B Calculate the speed the harmonica must have in order for a stationary observer to hear 587.3 Hz. Express your answer to three significant...
I need help. Please show steps! The uniform 80-kg slender bar is initially at rest on a smooth horizontal plane when the forces are applied. (Figure 1) Part A Determine the acceleration of the bar's mass center at this instant. Express your answer to three significant figures and include the appropriate units. μΑ ? ag = Value Units Figure < 1 of 1 > Submit Request Answer Part B 20 N 0.75 m 0.5 m -1.75 m Determine the angular...
Consider the simply supported beam shown in (Figure 1). Suppose that P = 10 kN, w = 5 kN/m. Point D is located just to the left of the 10-kN concentrated load. Follow the sign convention Part A Determine the internal normal force at point C. Express your answer to three significant figures and include the appropriate units. НА ? Nc = Value Units Submit Request Answer Part B Determine the internal shear force at point C. Express your answer...
An X-ray photon scatters from a free electron at rest at an angle of 105 relative to the incident direction Part A If the scattered photon has a wavelength of 0.340 nm, what is the wavelength of the incident photon? Express your answer using three significant figures. IVO ACO ? = nm Submit Request Answer Part B Determine the energy of the incident photon. Express your answer using three significant figures. ΤΡΙ ΑΣΦ ? EN keV Submit Request Answer Part...
Please help me with the following questions: 1) Superman must stop a 115-km/h train in 150 m to keep it from hitting a stalled car on the tracks. The train's mass is 3.6 × 105 kg. Part A: Determine the force that must be exerted on the train. Express your answer to two significant figures and include the appropriate units. Enter positive value if the direction of the force is in the direction of the initial velocity and negative value...
Billiard ball A of mass mA = 0.125 kg moving with speed vA = 2.80 m/s strikes ball B, initially at rest, of mass mB = 0.140 kg . As a result of the collision, ball A is deflected off at an angle of θ′A = 30.0∘ with a speed v′A = 2.10 m/s, and ball B moves with a speed v′B at an angle of θ′B to original direction of motion of ball A. Part C Solve these equations...
reviewIwona Consider the circuit in (Figure 1). Suppose that i = 1.6 A and y = 28 V Part A Use a series of source transformations to find in in the circuit. Express your answer to three significant figures and include the appropriate units. View Available Hint(s) μΑ ? 0.399 A Submit Previous Answers X Incorrect: Try Again: 4 attempts remaining Part B Complete previous part(s) Provide Feedback Next > Figure 1 of 1 > 612 02 5 Ω w...
An atomic nucleus initially moving at 390 m/s emits an alpha particle in the direction of its velocity, and the remaining nucleus slows to 250 m/s . Part A If the alpha particle has a mass of 4.0 u and the original nucleus has a mass of 222 u , what speed does the alpha particle have when it is emitted? Express your answer to two significant figures and include the appropriate units. v ′ α v α ′ =...