Ayuda por favor es para mañana
1) se dispone de un cuerpo cilíndrico de 15cm de alto y 2cm de radio su masa es de 300g, ¿que densidad tiene?
2) una esfera de 40g de masa y su densidad es de 5gr/cm^(3) ¿cual es su radio?
3)en que medida y cuantas cifras significativas hay en estas cantidades. a)5,3451 m b)53,2 kgc)18,27 s.
4)8000 mm transformar a m considerando c. s.
5) a 15 m/s cuánto tardaría un motociclista en atravesar 2km si su velocidad es constante

The place you get your hair cut has two nearly parallel mirrors 6.00 m apart. as you sit in the chair, your head is 2.00 m from the nearer mirror. looking toward this mirror, you first see your face and then, farther away, the back of your head. (the mirrors need to be slightly nonparallel for you to be able to see the back of your head, but you can treat them as parallel in this problem.) how far away does the back of your head appear to be?

Suppose that two tanks, 1 and 2, each with a large opening at the top, contain different liquids. a small hole is made in the side of each tank at the same depth 1.57 m below the liquid surface, but the hole in tank 2 has 2.49 times the cross-sectional area of the hole in tank 1. (a) what is the ratio ρ1/ρ2 of the densities of the liquids if the mass flow rate is the same for the two holes? (b) what is the ratio rv1/rv2 of the volume flow rates from the two tanks? (c) at one instant, the liquid in tank 1 is 14.9 cm above the hole. if the tanks are to have equal volume flow rates, what height above the hole must the liquid in tank 2 be just then?

Determine the maximum r-value of the polar equation r =3+3 cos 0