Recent content by strawberry7

Homework Statement A microscope is made in a tube 25.0 cm long. It magnifies 5.00 x 10to the 2 times, 50.0 times by the objective lens and 10.0 times by the eyepiece. What are the focal lengths of the two lenses? Homework Equations m= H/h=-q/p q= p(f) / p-f H= -h(q/p) The...

The index of refraction for glycerine is 1.473, and the larger it is, the slower light travells. but i don't know which formula to use... Once i found the index of refraction, which formula do i use that has wavelength?

1. Determine the time it takes for light to travel 54 cm through glycerine in an aquarium. 2. Red light travels from air into liquid at an angle of incidence of 390 and an angle of reflection of 170. Calculate the wavelength of the red light in the liquid if its wavelength in air is...

Homework Statement 1. Dubbie is moving directly along a normal line toward a plain mirror at a speed of 3.5 m/s, what is the speed of the image relative to Dubbie? 2. What is the speed of the image, relative to Dubbie, if Dubbie walk away from the mirror surface at 3.5 m/s at an angle of 300...

so am i sopposed to use the Q= mc (Change in temperature) formula so like 1 * 4186 * 100 Q = 418600And then 418600 = 10 *4186 *? = 41860 * t 418600/41860 = t t = 10 So it's slightly over 0 C ?

thankyou!

that is exactly what the question said...Actualy therre is a typo I'll edit it

Homework Statement When 1 kg of water at 100 C is mixed with 10 Kg of water at 0C, the equilibrium temperature will be: a) exactly 0 C b) Exactly 50 C C) Exactly 100 C d) slightly above 0 C I think that the answer is D) sligtly above 0 C, but i don't know why. I'm not sure what...

Homework Statement Calculate the amount of heat energy required to melt a 10 Kg block of ice at 0 degrees C into liquid water at 0 degrees C. The latent heat of fusion for water is 3.34 * 10to the 5Homework Equations Q = mc(change in temperature)The Attempt at a Solution Q = (10)(3.34 *...

thankyou for all you help but i have to go. THANKYOU SO MUCH! ! ! !

that was sopposed to say 35 km/s

(20km/h)*T. The second one travels (15km/h)*T add them together 35 km/g

displacement? so the read formula would be t = distance 2 -distance 1 /velocity 2 -velocity 1 = 20km / 20km/h - 15 km/h = 20km/5km/h = 4 hours??

I don't know the distance,they don't tell you, and there is no way to find out. It there?

I don't know the question doesn't say.d = vt = 20 km/h time I don't know what to doooo