Necesito ayuda urgente por favor y necesito la respuesta con procedimiento.

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

1.what is where an object is located 2. what is how fast an objects speed is changing 3. what is how fast an object is moving

To practice problem-solving strategy 10.1 for energy conservation problems. a sled is being held at rest on a slope that makes an angle θ with the horizontal. after the sled is released, it slides a distance d1 down the slope and then covers the distance d2 along the horizontal terrain before stopping. find the coefficient of kinetic friction μk between the sled and the ground, assuming that it is constant throughout the trip.