Answer:
W = 9.93 10² N
Explanation:
To solve this exercise we must use the concept of density
ρ = m / V
the tabulated density of copper is rho = 8966 kg / m³
let's find the volume of the cylindrical tube
V = A L
V = π (R_ext ² - R_int ²) L
let's calculate
V = π (4² - 2²) 10⁻⁴ 3
V = 1.13 10⁻² m³
m = ρ V
m = 8966 1.13 10⁻²
m = 1.01 10² kg
the weight of the tube
W = mg
W = 1.01 10² 9.8
W = 9.93 10² N
500N
Explanation:
Given parameters:
Mass of skater = 50kg
Acceleration = 10m/s
Unknown:
Force = ?
Solution;
Force is a push or pull on a body. it is given as the product of mass and acceleration:
Force = mass x acceleration
Input the parameters:
Force = 50 x 10 = 500N
She hits the wall with a force of 500N
Learn more:
Force brainly.com/question/3820012
#learnwithBrainly
Answer: Just a few examples are the tension in the rope on a tether ball, the force of Earth's gravity on the Moon, friction between roller skates and a rink floor, a banked roadway's force on a car, and forces on the tube of a spinning centrifuge. Any net force causing uniform circular motion is called a centripetal force.
The distance the object moved is 100 m
the power of the machine is 1000 watts
distance = work/force (because work = force x distance)
distance = 20000/200 = 100
power = work/ time
power = 20000/20 = 1000
