Explanation:
Cells are the basic building blocks of all living things. The human body is composed of trillions of cells. They provide structure for the body, take in nutrients from food, convert those nutrients into energy, and carry out specialized functions. 
 
        
             
        
        
        
Answer:
transmission: the passing of a wave through an object
Explanation:
 
        
             
        
        
        
Answer:
hey mate here is your answer
So if an object has a very small velocity (not moving very far over time, even though a large force may be applied to it, the Power will remain small. ... Stepping on the gas, or "speeding up" the car, is applying a force which will increase velocity and increase power.
please mark me as a brainliest
 
        
             
        
        
        
Answer:
 ΔK = -6 10⁴ J
Explanation:
This is a crash problem, let's start by defining a system formed by the two trucks, so that the forces during the crash have been internal and the moment is preserved
 initial instant. Before the crash
         p₀ = m v₁ + M 0
final instant. Right after the crash
         p_f = (m + M) v
         p₀ = p_f
         mv₁ = (m + M) v
         v =  
      
we substitute
         v =  3
   3
         v = 1.0 m / s
having the initial and final velocities, let's find the kinetic energy
         K₀ = ½ m v₁² + 0
         K₀ = ½ 20 10³ 3²
         K₀ = 9 10⁴ J
         K_f = ½ (m + M) v²
         K_f = ½ (20 +40) 10³  1²
         K_f = 3 10⁴ J
the change in energy is
        ΔK = K_f - K₀
        ΔK = (3 - 9) 10⁴
        ΔK = -6 10⁴ J
The negative sign indicates that the energy is ranked in another type of energy