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denpristay [2]
3 years ago
11

What is Space debris ?

Physics
2 answers:
pshichka [43]3 years ago
6 0

Answer:

Space junk, or space debris, is any piece of machinery or debris left by humans in space. It can refer to big objects such as dead satellites that have failed or been left in orbit at the end of their mission. It can also refer to smaller things, like bits of debris or paint flecks that have fallen off a rocket.

marissa [1.9K]3 years ago
4 0

Answer:

In addition to derelict man-made objects left in orbit, other examples of space debris include fragments from their disintegration, erosion and collisions or even paint flecks, solidified liquids expelled from spacecraft, and unburned particles from solid rocket motors. Space debris represents a risk to spacecraft.

Explanation:

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Alligators and other reptiles don't use enough metabolic energy to keep their body temperatures constant. They cool off at night
ANTONII [103]

Answer:

Explanation:

Amount of heat required can be found from the following relation

Q = mcΔT

m is mass of the body , c is specific heat and ΔTis rise in temperature .

Here m = 300 kg

c = 3350 J /kg k

ΔT = 30 - 25

= 5 °C

Putting the values in the expression above

Q = 300 x 3350 x 5

= 5025000 J

Rate at which energy is absorbed = 1200 J /s

Time required

= 5025000 / 1200

= 4187.5 S

= 69.8 minute

= 1 hour 9.8 mimutes.

4 0
3 years ago
How to change 0.000 007 8 s to us?
Greeley [361]

 

The letter u before any unit means micro. Micro is a unit prefix used in the metric system which actually means a factor of 10^-6 (one millionth).

Now, 10^-6 is equivalent to a movement of 6 decimal places from left to right. So to write the number 0.0000078 s into a number which has a unit of us, therefore we move the decimal place by 6 to the right, giving us:

7.8 us

 

Another way to do this is to multiply the number by 1 million (1,000,000), so:

0.0000078 * 1,000,000

Using the calculator to solve, we get the value:

7.8 us

8 0
3 years ago
Matthew drives 10 meters to go to the park at her the park he goes to the movie theatre which is 15 meters away from the park. H
Step2247 [10]

Answer: 0 m

Explanation:

Let's begin by stating clear that movement is the change of position of a body at a certain time. So, during this movement, the body will have a trajectory and a displacement, being both different:

The trajectory is the <u>path followed by the body</u> (is a scalar quantity).  

The displacement is <u>the distance in a straight line between the initial and final position</u> (is a vector quantity).

According to this, in the description Matthew's home is placed at 0 on a number line, then he moves 10 m to the park (this is the distance between the park and Mattew's home), then 15 m to the movie theatre until he finally comes back to his home (position 0). So, in this case we are talking about the <u>path followed by Matthew</u>, hence <u>his trajectory</u>.

However, if we talk about Matthew's displacement, we have to draw a straight line between Matthew's initial position (point 0) to his final position (also point 0).

Now, being this an unidimensional problem, the displacement vector for Matthew is 0 meters.

4 0
3 years ago
(100 POINTS!!) Short answer about how acceleration is dependent on the speed and direction of an object!!!! please help!!!!!
zhuklara [117]

Answer:

The acceleration of the object is dependent upon this velocity change and is in the same direction as this velocity change. The acceleration of the object is in the same direction as the velocity change vector; the acceleration is directed towards point C as well - the center of the circle.

i hope that helped you!!

Explanation:

8 0
3 years ago
Read 2 more answers
Question 4 (5 points)
faust18 [17]
The domains in a magnet are aligned according to magnetic fields.
8 0
3 years ago
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