Un automóvil de juguete de 50 g recorre una pista con velocidad de 5 m/s que mantiene hasta llegar a una pendiente con fricción que lo deja 30 cm más arriba con una velocidad de 3 m/s. ¿Qué trabajo realizó la fricción en el juguete?
A. 0,253 J.
B. 0,147 J
C. 0,147 J.
D. 0,253 J.

si alguien es bueno en física porfa ayuda

A26 cm object is 18 cm in front of a plane mirror. a ray of light strikes the object and is reflected off the mirror at a 42-degree angle. what is the angle of reflection? degrees what type of image is formed? what is the size of the image? cm

Afrequency generator sends a 550 hz sound wave through both water and ice. what is the difference in wavelength between the wave produced in ice and the wave produced in water?

Select light for the type of wave, adjust the wavelength so that the light is red, and increase the amplitude of the light to the max. then, select the start button at the source location to begin producing the waves. light is a form of electromagnetic wave, containing oscillating electric and magnetic fields. the wave amplitude detector mentioned above shows how the electric field oscillates in time at the location of the probe. the amplitude of the wave at the location of the probe is equal to the maximum electric field measured. how does the amplitude of the wave depend on the distance from the source?