)object clearly at a distance of 30 cm with eyeglasses power of +2.5 diopters. determine the focal length of the lenses of the eyeglasses. find the person's near point without wearing the eyeglasses. you can neglect the distance from the lenses to the eyes. 1. a person can see an that have a (6 marks) m due to the point charges determine the net electric field at the point (3,3) q10 hc located at (2,4) m, qa = 5 uc located at (-1,-6) m and q,=-8 c located at (-3,5) m. (b)

Amachine, modeled as a simple spring-mass system, oscillates in simple harmonic motion. its acceleration is measured to have an amplitude of 5,000 mm/s with a fre- quency of 10 hz. compute the maximum displacement the machine undergoes during this oscillation.

What is the final velocity of the initial velocity of 25 and -50?

Thomas his older brothers, who own a junk yard, on the weekends to earn extra money. he likes to them push broken-down cars to the back of the junk yard because it makes him feel strong. last saturday, they pushed three cars with different weights, and he noticed he used different amounts of force for each one. the cars were the following weights: white car: 2,700 kg red car: 1,500 kg blue car: 2,100 kg think about how much force is needed to move each car. which correctly lists the cars in order from the most to least amount of force needed to move them? a) white, blue, red b) blue, red, white c) red, white, blue d) white, red, blue