Answer:
Net force= 14 units
The object is unbalanced
Explanation:
The net force refers to the sum of all forces applied to an object. However, the direction of force applied determine the net force. In this question, a boy and girl is pulling a heavy crate at the same time.
This means that the force is in the same direction, hence, the net force will be:
F(N) = 7 + 7 = 14 unit
However, since the pull is occuring at the same direction. This means that the object has a net force, therefore, will move in a particular direction. This means that the OBJECT IS UNBALANCED
Answer:
Q= 231.88 W/m²
Explanation:
Given that
L= 20 cm
K= 2.79 W/m·K
T₁=50°C
T₂= 22°C
h=15 W/m₂·K
The total thermal resistance
Now by putting the values
R= 0.138 K/W ( for heat flux A= 1 m²)
Heat flux Q= ΔT/R
Q= (50-22)/0.138 = 32/0.138 W
Q= 231.88 W/m²
The second one is the answer
Claudia's mass is 51 kg, therefore her weight is
W = (51 kg)*(9.8 m/s) = 499.8 N
The bungee cord extends by x = 5m due to the weight.
By definition the spring constant for the bungee cord is
k = W/x = (499.8 N)/(5 m) = 99.96 N/m
Answer: The spring constant is 100 N/m (nearest tenth)