The most likely models of the planet Mercury indicate that more than half the planet may be composed of_______

Hi there, it is your average pathetic Junior. Anyways, I need help on 8&9 ASAP, this assignment is beyond overdue but hey wh

zheka24 [161]

Answer:

a) -31.36 m/s

b) 50.176 m

Explanation:

<h2>a) Velocity of the bag</h2>

This is a problem of motion in one direction (specifically vertical motion), and the equation that best fulfills this approach is:

$V_{f}=V_{o} +a.t$ (1)

Where:

$V_{f}$ is the final velocity of the supply bag

$V_{o}=0$ is the initial velocity of the supply bag (we know it is zero because we are told <u>it was "dropped", this means it goes to ground in free fall</u>)

$a=g=-9.8m/s^{2}$ is the acceleration due gravity (the negtive sign indicates the gravity is downwards, in the direction of the center of the Earth)

$t=3.2s$ is the time

Knowing this, let's solve (1):

$V_{f}=0+(-9.8m/s^{2})(3.2s)$ (2)

Hence:

$V_{f}=-31.36m/s$ Note the negative sign is because the direction of the bag is downwards as well.

<h2>b) Final height of the bag</h2>

In this case we will use the following equation:

$y=V_{o}t-\frac{1}{2}gt^{2}$ (3)

Where:

$y$ is the distance the bag has fallen

$V_{o}=0$ remembering <u>the bag was dropped</u>

$g=-9.8m/s^{2}$ is the acceleration due gravity (downwards)

$t=3.2 s$ is the time

Then:

$y=-\frac{1}{2}gt^{2}$ (3)

$y=-\frac{1}{2}(-9.8m/s^{2})(3.2)^{2}$ (4)

Finally:

$y=50.176 m$

4 0

2 years ago

A what is any small object that orbits a larger object

erica [24]

I think the the answer is satellite, I could be wrong

3 0

2 years ago

Suppose you need to design a parachute system to help a remote camera land safely

IgorLugansk [536]

The correct answer is hang glider.

A hang-glider cannot take off from low ground since it has no power. It needs to be launched from a high location, such a mountain or a hill. The major force acting on a hang-glider is gravity. The weight of the wing and the pilot together is this. The push that keeps the aerofoil flying through the air is produced by the weight. The hang-aerofoil glider's wing's form prevents it from falling to the ground like a stone. It results in lift. An area of low pressure is created by the aerofoil's acceleration of the air passing over the top of the wing. The air moving beneath the wing is compressed as the wing moves forward and downward. After then, the aerofoil is lifted up into the region of low pressure.

The air will gradually drop if it is still. A hang-glider descends at a speed of roughly 3.6 km/h (slow walking), or about 1 meter per second. A hang-glider needs to locate air coming up at the same rate as the glider is going down in order to maintain height. A hang-glider can fly along a cliff without losing height, for instance, if there is a light breeze coming straight from the sea, the air is being forced vertically upward by the cliff at 3.6 km/h, and the glider is flying over a vertical coastal cliff. The glider will begin to gain altitude in a stronger breeze.

Some hang-glider pilots equip their craft with tiny motors and propellers. They become microlights as a result and can now take off and climb from flat ground like a regular aircraft.

To learn more about hang-glider refer the link:

brainly.com/question/1365947

#SPJ9

4 0

6 months ago

An object has an emissivity of 0.725. At temperature T, it radicates heat at a rate of 10 W. What is its rate of heat radiation

katrin [286]

Radiative power scales with the fourth power of temperature, so 160 W.

3 0

2 years ago

Bohr's model of the atom included a positively charged _____ orbited by negatively charged _____. nucleus, protons nucleus, elec

alexgriva [62]