.. Two students in a physics laboratory each have a concave mirror with the same radius of curvature, 40 cm. Each student places an object in front of their mirror. The image in both mirrors is three times the size of the object. However, when the students compare notes, they find that the object distances are not the same. Is this possi- ble? If so, what are the object distances?

Z Your answer is partially correct. Try again. Two sinusoidal waves with the same amplitude of 9.02 mm and the same wavelength travel together along a string that is stretched along an x axis. Their resultant wave is shown twice in the figure, as valley A travels in the negative direction of the x axis by distance d = 58.0 cm in 11.0 ms. The tick marks along the axis are separated by 10 cm, and height H is 8.1 mm. Let the equation for one wave be of the form y(x, t) = ym sin(kx + wt + P1), where p1 = 0 and you must choose the correct sign in front of w. For the equation for the other wave, what are (a) ym, (b) k, (c) w, (d) P2, and (e) the sign in front of w? (a) Number 4.00 UnitsT mm (b) Number UnitsTrad/m or m^-1 15.7 (c) Number 926.76 UnitsT rad/s or s^-1 (d) Number UnitsT rad 2.7 (e)

When a man stands near the edge of an empty drainage ditch of depth 2.80 m, he can barely see the boundary between the opposite wall and bottom of the ditch as in Figure (a) shown below. The distance from his eyes to the ground is h = 1.88 m. (Assume 0 = 27.6°.) IA h d a b Ө m 0 2.80 m (a) What is the horizontal distance d from the man to the edge of the drainage ditch? d = (b) After the drainage ditch is filled with water as in Figure (b) shown above, what is the maximum distance x the man can stand from the edge and still see the same boundary? X = m

Physics Question is attached image