Physics Questions from Jan 21,2025

Browse the Physics Q&A Archive for Jan 21,2025, featuring a collection of homework questions and answers from this day. Find detailed solutions to enhance your understanding.

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MARKS [ ] A car is traveling at a speed of on an interstate highway where the speed limit is . Determine if the driver is exceeding the speed limit. 2. Determine the magnitude and direction of the displacement if a man walks 30.0 km north of east and then walks due east 20.0 km . A ball is thrown straight up in the air. For which situation are both the instantaneous velocity and the acceleration zero? A person takes a trip, driving with a constant speed of , except for a 22 minute rest stop. If the person's average speed is , calculate a) the time spent on the trip. 1) the distance the person travelled. i) the maximum height ii) the time to reach the highest point. A ball is thrown vertically upward with a speed of . Calculate 2. Periode suatu getaran adalah detik. Tentukan: a) frekuensi getaran b) jumlah getaran dalam 5 menit 1. Dalam dua menit terjadi 960 getaran pada suatu partikel. Tentukan: a) periode getaran b) frekuensi getaran 3.- La longitud de onda, de la luz verde de un semáforo es aproximadamente de 725 nm ¿Cuál es la frecuencia de esta radiación? 4.- ¿Cuál es la longitud de onda, de una onda electromagnética que tiene una frecuencia, de ? 1.- Calcular la velocidad, de una onda cuya longitud, y frecuencia, son 19.4 cm y 87.4 Hz respectivamente. 2.- Calcular la frecuencia, de una onda cuya velocidad y longitud de onda, son y 1.19 m respectivamente. Sebuah benda bermassa 2 kg terletak atas tanah. Benda itu ditarik vertikal atas dengan gaya 25 N selama 2 deti lalu dilepaskan. Jika ener kinetik benda pada saat mengenai tana adalah ... Un vehiculo viaja a una rapidez promedio de desde una caseta a otra. Si el tiempo que tarda es de 13 minutos. qué tiempo recorre la misma distancia si viaja a ? The color of light can be expressed in terms of either frequency or wavelength , which has units of nanometers ( nm ). The equation that relates the frequency and wavelength of light with the speed of light is: The speed of light is a constant and approximately equal to meters per second. Green lasers emit light at a wavelength of 532 nm . However, the material that is used to make most green lasers does not emit light at 532 nm . Instead, it emits light at a different wavelength, and the laser then uses a "frequency doubler." This doubles the frequency of the emitted light, and the resultant light is the green 532 nm that we observe. 1 meter is equal to nanometers. What is the output light frequency of the material used before doubling? You may use the calculator. A. B. C. n GED Ready® - Science - Christilyn Robinson Time Remaining 00:3 Hioghinght (1) Gileniator EDuestion 130 Calculator Reference Moving objects, such as automobiles, have kinetic energy (KE), which is measured in joules. This energy can be calculated using the following formula: A person drives an automobile with a mass of 450 kilograms at a velocity of 26 meters per second. The driver accelerates to a velocity of 30 meters per second. The difference in the automobile's kinetic energy between the two velocities is joules. You may use the calculator. Prevtous Navigatar Not 5 Frels colcine A ball is launched from the ground with an initial velocity of at an angle of above the horizontal. What is the approximate maximum height above the ground reached by the ball? (A) 0.69 m (C) 2.4 m (D) 3.2 m
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