Answer:
good because piggy loves peppa pig :3
Explanation:
 
        
             
        
        
        
Answer:
      v₂ = 70 m / s
Explanation:
For this exercise let's use Bernoulli's equation
where subscript 1 is for the top of the mountain and subscript 2 is for Tuesday's level
  
           P₁ + ½ ρ v₁² + ρ g y₁ = P₂ +1/2 ρ v₂² + ρ g y₂
indicate that the pressure in the two points is the same, y₁ = 250 m, y₂ = 0 m, the water in the upper part, because it is a reservoir, is very large for which the velocity is very small, we will approximate it to 0 (v₁ = 0), we substitute
          ρ g y₁ = ½ ρ v₂²
          v₂ =  
let's calculate
          v₂ = √( 2 9.8 250)
          v₂ = 70 m / s
 
        
             
        
        
        
Answer:
W = 0.060 J
v_2 = 0.18 m/s
Explanation:
solution:
for the spring:
W = 1/2*k*x_1^2 - 1/2*k*x_2^2
x_1 = -0.025 m and x_2 = 0
W = 1/2*k*x_1^2 = 1/2*(250 N/m)(-0.028m)^2
W = 0.060 J
the work-energy theorem,
W_tot = K_2 - K_1 = ΔK
with K = 1/2*m*v^2
v_2 = √2*W/m 
v_2 = 0.18 m/s
 
        
             
        
        
        
The amount of matter in an object ismass....anything that occupies spaca and has weight is called matter.....
        
             
        
        
        
Your answer is C) The year the element was discovered :)