Which of the following is a type of t cell?
a.
cytotoxic t cell
b.
suppressor t cell
c.
t cell
d.
all of the above

In a given chemical reaction, the energy of the products is greater than the energy of the reactants. which statement is true for this reaction?

Sort the images based on whether there's a force of attraction or repulsion between the magnets shown. attraction repulsion

Aspring is used to stop a 50-kg package which is moving down a 20º incline. the spring has a constant k = 30 kn/m and is held by cables so that it is initially compressed 50 mm. knowing that the velocity of the package is 2 m/s when it is 8 m from the spring and neglecting friction, determine the maximum additional deformation of the spring in bringing the package to rest.