Starting from rest, a horse pulls a 263−kg cart for a distance of 1.6 km. it reaches a speed of 0.38 m/s by the time it has walked 50.0 m and then walks at constant speed. the frictional force on the rolling cart is a constant 253 n. each gram of oats the horse eats releases 9 kj of energy; 10 % of this energy can go into the work the horse must do to pull the cart. how many grams of oats must the horse eat to pull the cart?

Explanation:

The work done on the cart by the horse is found by:

replacing:

, , , ,

10% E= 900J

cell differentiation  is how generic embryonic  cells  become specialized  cells. this occurs  through a process called gene expression. gene expression is the specific combination of genes that are turned on or off (expressed or repressed), and this is what dictates how a  cell  functions.

explanation:

a.metals can become magnetic if they have many spinning electrons that create magnetic fields.d.only some metals are attracted by magnets; these metals are called ferromagnetic.

d.wrapping an insulated wire around a metal with ferromagnetic properties and applying an electric current.