1) the sun (greek name Helios gives heliocentric)
2) A. Newton's laws of motion can prove this as well as Kepler's Laws
3) D. Inertia keeps it from falling onto the sun and gravity keeps it from going off in a straight line
4) moons. They orbit planets not suns directly
5) B (International Space Station gives a hint)
Acceleration of the car driven by Ariana = 4.6 m/s^2
Time taken to reach this acceleration = 10 seconds
Let us assume the final velocity of the car (V2) = x m/s
Initial velocity of the car driven by Ariana (V1) = 0 m/s
Then
Acceleration = (V2 - V1)/ Time taken
4.6 = (x - 0)/10
4.6 = x/10
x = 4.6 * 10 m/s
= 46 m/s
So the final velocity of the car Ariana was driving was 46 meters per second.
Answer:
The value is 
Explanation:
From the question we are told that
The work input is 
The heat delivered is 
The value of A is A = 14
The value of B is B = 72
Generally the efficiency of the heat engine is mathematically represented as
Here 
is the total out energy produce by the heat engine and this is mathematically represented as
=> 
=> 
So
=> 
=> 
=>
Answer:
a) 0.804second
b) 0.162m
Explanation:
In simple harmonic motion;
Period T = 2π√m/k
Where m is the mass of the object
K is the force constant
Given:
M = 13.0kg
K = 788N/m
T = 2π√13/788
T = 2π√0.0165
T = 2π×0.128
T = 0.804second
Frequency is the reciprocal of the period. F = 1/T
F = 1/0.804
F = 1.244Hertz
b) To get the amplitude x, we will use the relationship F = kx where F is the force exerted by the baby of mass 13kg
x = F/k
Since F = mg
x = mg/k
Assume g = 9.81m/s²
x = (13×9.81)/788
x = 127.53/788
x = 0.162m
The minimum amplitude that she requires is 0.162m
