Answer:
7.54 m/s
Explanation:
C = 2πr
C = 2π (0.450 m)
C = 2.827 m
v = d / t
v = 25.0 (2.827 m) / (9.37 s)
v = 7.54 m/s
There are several information's of importance already given in the question. Based on those information's the answer can be deduced.
Volage = 19 V
Current = 5 A
Power = Voltage x Current
= 19 x 5
= 95 Watt
From the above deduction, it can be concluded that the correct option among all the options that are given in the question is the second option or 95 W.
A person should power walk 30-45 min a day
Answer:
x = 0.327 m
Explanation:
Block 2 of mass 1.00 kg is at rest
spring constant = 200 N/m
Block 1 of mass 2 kg moving at 4 m/s
m₁ v₁ = (m₁ + m₂)V
2 x 4 = (2 + 1) V
V = 2.67 m/s
loss of kinetic energy = gain elastic potential energy
x = 0.327 m
hence, the spring compressed distance is equal to x = 0.327 m
Answer:
The raduis of the geosynchronous orbit of the satellite around earth is 3.88×10^10m
Explanation:
The raduis of geosynchronous orbit of a satellite is given by:
R = Cuberoot(T^2GM)/4pi r^2
Given:
G = gravitational constant = 6.67×10^-11Nm^2
M = mass of earth = 5.98×10^24kg
r = radius of the earth = 6.38×10^6m
T = time period on the earth = 24hours
Changing hours to seconds = 24 ×60minutes ×60 seconds = 86,400seconds
Substituting into the equation
R = Cuberoot[ (86,400)^2 × (6.67×10^-11)×(5.98×10^24) / (4×3.142×(6.38×10^6)^2]
R = Cberoot [ (2.98×10^46)/(5.12×10^14)]
R = Cuberoot(5.82×10^31)
R = 3.88×10^10m