Answer:
Observation 1 represents a solar wind because solar winds are a continuous stream of particles given off by the sun.
Explanation:
Mechanical advantage is the ratio of output force to input force of a machine.
hope this helps and have a great day :)
Answer:
the one with v = 25 m/s
Explanation:
Momentum = m * v
if they both have the same mass (15000 kg) , then the one with the higher v has more momentum...I think A= 25 m/s
The answer is <span>b. 6.1 times as long
</span>
Step 1: Calculate the time <span>it takes objects to reach a speed on the Moon.
</span>Step 2: Calculate the time it takes objects to reach a speed on the Earth.
Step 3. Divide the time on the Moon by the time on the Earth.
Use the formula: v2 = v1 + at
v2 - the final velocity
v1 - the initial velocity
a - gravitational acceleration
t - time
Step 1.
Moon:
<span>v1 = 0 (because it is free fall)
v2 = 10 m/s
a = 1.6 m/s</span>²
t = ?
______
v2 = v1 + at
10 = 0 + 1.6t
10 = 1.6t
t = 10/1.6
t = 6.25 s
Step 2.
Earth:
v1 = 0 (because it is free fall)
v2 = 10 m/s
a = 9.81 m/s²
t = ?
______
v2 = v1 + at
10 = 0 + 9.81t
10 = 9.81t
t = 10/9.81
t = 1.02 s
Step 3:
6.25 s / 1.02 s = 6.1 s
Answer:
I /
= 1.48
, The correct answer is d
Explanation:
the moment of inertia is given by
I = ∫ r² dm
For figures with symmetry it is tabulated. In the case of a thin variation, the moment of inertia with respect to its center of mass is
= 1/12 M L2
There is a widely used theorem, which is the parallel axis theorem, where the moment of inertia of any parallel axis, is the moment of mass inertia plus the moment of inertia of the body taken as a particle
I =
+ M D²
Let's put these expressions to our case.
As the bar is one meter long its center of mass that this Enel midpoint corresponds to
= 1/12 m L²
= 1/12 m 1.00²
= 8.33 10⁻² m
Let's use the parallel axes theorem for the axis that passes through x = 30 cm. The distance from the enrode masses to the axis is
D =
- 0.30
D = 0.50 - 0.30 = 0.20 m
I =
+ m D²
I = 8.33 10⁻² m + m 0.2²
I = (8.33 10⁻² + 4 10⁻²) m
I = 12.33 10⁻² m
The relationship between these two moments of inertia
I /
= 12.333 10⁻² / 8.333 10⁻²
I /
= 1.48
The correct answer is d