In a gas-powered car, a battery produces electrical energy to start the motor. (C)
Answer:
The answer is below
Explanation:
a) The vertical displacement = Δy = 21.5 m - 1.5 m = 20 m
The horizontal displacement = Δx = 69 m wide
Using the formula:
Also:
b)The car is moving at a constant speed in the horizontal direction, hence the initial velocity = final velocity
Theres nothing to look at how can someone answer this? XD
Answer:
Explanation:
In space station artificial gravity is created by rotational motion of space station
Centifugal acceleration creates artificial gravity
ω²r = g
ω² x 400 = 9.8
ω² = 9.8 /400
ω = .1565 rad /s
no of turns per min ω / 2π per sec = 1.56 rev per min .
For Mars
Same theory will apply
ω²r = g
ω² x 400 = 3.7
ω² = 3.7 /400
ω = . 096 rad /s
n = ω / 2π
= .096 / 2π
=.01528 per sec
per min
= .9168 per min .
Answer:
1) Li = 0048678 kg -m^2/s
2) 0.129483 joule
3) 3.4745 Rad/s
4) 0.08456 joule
Explanation:
1) INITIAL ANGULAR MOMENTUM
we know that
2) INITIAL ROTATIONAL KINETIC ENERGY
3) FINAL ANGULAR VELOCITY
from conservation of angular momentum
Li =Lf
= 3.4745 Rad/s
4) FINAL ROTATIONAL KINETIC ENERGY