A frictionless, massless pulley is attached to the ceiling, in a gravity field of 9.81 m/s2. Mass M2 is greater than mass m1. The quantities Tn and g are magnitudes.
a. The center of mass accelerates.
b. T1 is M1g.
c. T3 is m1g + M2g
d. T1 is T2
e. The magnitude of the acceleration of M2 is the magnitude of the acceleration on m1.
f. T1 + T2 is T3

Lymphocytes known as blastocysts make antibodies that fight infection. select the best answer from the choices provided t f

Calculate the mass of an object that has a momentum of 100kg x m/sec and velocity of 4 m/sec

Unpolarized light falls on two polarizer sheets whose transmission axes are at right angles. a third polarizer is placed between the first two so that its axis makes a 52-degree angle with the axis of the first polarizer. a) what fraction of the incident light intensity is transmitted through the first polaroid? b) what fraction of the incident light intensity is transmitted through the second polaroid? c) what is the angle of polarization of the light that enters the third polaroid? d) what fraction of the incident light intensity is transmitted through the third polaroid. e) what happens if the middle polaroid is removed?