1. Dos muchachos tiran de los extremos de una cuerda atada alrededor de una caja con fuerzas de 15 N y 30. Dibuja un esquema en las fuerzas y determina la fuerza resultante en los siguientes casos: a) las dos fuerzas tienen la misma dirección y sentido
b) las dos fuerzas so perpendiculares

2. Calcula el modulo del momento de un par de fuerzas de intensidad 20N aplicando sobre un volante de 50cmde diámetro.

(por favor ayud, lo nesesito para hoy )​

what are the options

a researcher conducts an experiment on the secretion of a particular hormone in mice. scientists inject mice with a substance that stimulates the production of the hormone. the scientists then test the levels of hormones produced by the mice. the tool used to measure the hormones consistently detects the levels at 10 points lower than the actual hormone levels in the mice. this tool makes measurements, but the measurements aren't .

explanation:

no u

imagine a line passing through the center of earth that goes through both the north pole and the south pole. this imaginary line is called an axis. earth spins around its axis, just as a top spins around its spindle. this spinning movement is called earth's rotation. at the same time that the earth spins on its axis, it also orbits, or revolves around the sun. this movement is called revolution.