Answer:210
Explanation:
Divide 84 by 2 and then multiply by 5 by that number
Answer: resistor
Explanation: Not quite sure. Need more research
Answer:
1568N
2195.2J
Explanation:
Given parameters:
Mass of the weight = 160kg
Distance = 1.4m
Unknown:
Force applied to lift the weight = ?
Energy expended = ?
Solution:
The force applied in moving a body with a given mass through a distance is the weight;
Force applied = mg
Where m is the mass
g is the acceleration due to gravity
i. Applied force = 160 x 9.8 = 1568N
ii. The energy used to lift the weight is given as;
Energy = mgh
h is the vertical distance
Energy = 1568 x 1.4 = 2195.2J
