Answer:
I finish that module I'm sure it's D
Concave mirrors can make a real image.when the object is away from the mirror it is called real image and when the object is closer to the mirror it is called virtual mirror.
The formula for the period of the pendulum is

where L is the pendulum's length and g the gravitational acceleration.
Labeling with E the Earth and with M Mars, we can write the period of the pendulum on Earth as

and the period of the pendulum on Mars as

if we calculate the ratio, we get

but we know that the gravitational acceleration on Mars is 0.37 times the gravitational acceleration on Earth:

Substituting into the formula, we find

And so, the period of the pendulum on Mars is
The 4th one is correct
it starts from the sun then hay then rabbit then eagle
Answer:
is the minimum depth of snow for survivable stopping.
Explanation:
Given:
- terminal velocity of fall,

- mass of the paratrooper,

- force on the paratrooper by the ice to stop him,

<u>Firstly, we calculate the deceleration caused in the snow:</u>



Now, using equation of motion:
....................(1)
where:
v = final velocity of the body after stopping
u = initial velocity of the body just before hitting the snow
a = acceleration of the body in the snow
s = distance through in the snow
Putting respective values in eq. (1)

