The United States spends over $20 billion a year on space exploration through NASA. Do you think that this has been worth the cost? In three to five sentences, provide two specific examples of things we have learned from space exploration, and explain how these examples influence your opinion.(4 points)

Answers

Answer 1

Sunday, July 20, marked 45 years since the United States put the first two astronauts safely on the moon. The cost for the Mercury, Gemini and Apollo programs was more than $25 billion at the time more like $110 billion in today’s world. The ensuing U.S. space efforts have cost an additional $196 billion for the shuttle and $50 billion for the space station. NASA’s total inflation-adjusted costs have been more than $900 billion since its creation in 1958 through 2014 (more than $16 billion per year). Looking back, have we gotten our money’s worth from the investment?

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Related Questions

NET FORCE ( PLEASE ANSWER ASAP )

Answers

First picture (black background):  50 Newtons UP

Second picture (white background):  30 Newtons RIGHT

HELP PLZ "25 meters per second Northeast" is a description of
Speed
Acceleration
Velocity
Direction

Answers

Answer:

ion no

Explanation:

cuz i dont

Answer:

It is the SPEED of an object.

Explanation:

A person holding a lunch bag is moving upward in a hot air balloon at a constant speed of 7.7 m/s . When the balloon is 21 m above the ground, she accidentally releases the bag. Part A What is the speed of the bag just before it reaches the ground

Answers

Answer:

The speed of the bag just before it reaches the ground is 21.71 m/s.

Explanation:

The speed of the bag can be found using the following equation:

[tex] v_{f}^{2} = v_{0}^{2} - 2gy [/tex]

Where:

[tex]v_{f}[/tex] is the final speed =?

[tex]v_{0}[/tex] is the initial speed = 7.7 m/s

g: is the gravity = 9.81 m/s²

y: is the height = 21 m

[tex]v_{f}^{2} = v_{0}^{2} - 2gy = (7.7 m/s)^{2} - 2*9.81 m/s^{2}*(-21 m) = 471.31 m^{2}/s^{2}[/tex]

[tex]v_{f} = 21.71 m/s[/tex]

Therefore, the speed of the bag just before it reaches the ground is 21.71 m/s.

I hope it helps you!    

Experiment Question: How does temperature affect the air (gas) inside a balloon? Please help it's just the hypothesis I need help in. Also, this is NOT physics, it's SCIENCE!! (I couldn't find science, but yeah)

Answers

Answer:

I think when the balloon is heated up the gas will expand making the balloon bigger. When things are heated up the molecules will get excited and expand. When they balloon is cooled then the it will retract.

Hope this helps! :)

Besides the USA what is another country that does not use the metrio system?​

Answers

Answer:

The USA, Liberia, and Myanmar (Burma) are the only countries that do not use the metric system

Question 3 (1 point)
Which of the following is a vector quantity?
a) 16.5 seconds
b) 18.5 m/s west
c) 25 m/s
d) 12 meters

Answers

Answer:

B) 18.5 m/

s west

Explanation:

Scalar quantity has MAGNITUDE only

Vector quantity has MAGNITUDE and DIRECTION

Hope this is correct and helpful

HAVE A GOOD DAY!

3. A bus accelerates at 25 m/s/s. This allows the bus to speed up from 16 m/s to 172 m/s. How long
did this take?
9.18 seconds
-9.18 seconds
-6.24 seconds
6.24 seconds

Answers

Answer:

time taken will be 6.24sec.

please follow me

Under what circumstances does distance traveled equal magnitude of displacement? What is the only case in which magnitude of displacement and distance are exactly the same?

Answers

Answer: Please find the answer in the explanation

Explanation:

Under what circumstances does distance traveled equal magnitude of displacement?

When a body's motion is linear in one direction. Or a body moving in a straight line without turning back.

What is the only case in which magnitude of displacement and distance are exactly the same?

When the body is moving in a straight line with without changing direction or without turning back.

A freely suspended magnet does not point exactly at the geographical N-S direction​

Answers

Because their is nothing at the geographical poles that attracts the magnet

A hummingbird beats it’s wings up and down 60 times a second what is the frequency and period

Answers

Answer:

Period = 0.0167 seconds

Frequency = 60 Hz

Explanation:

Period: This can be defined as the time take by a wave to complete on cycle. The S.I unit is (s)

Frequency: This is the number of cycle completed by a wave. The S.I unit is (Hz)

From the question,

T = t/n................................... Equation 1

Where T = period, t = time take to complete n oscillation, n = number of oscillation.

Given: t = 1 seconds, n = 60.

Substitute these values into equation 1

T = 1/60

T = 0.0167 seconds.

Also,

F = 1/T........................... Equation 2

Where F = frequency

Given: T = 0.0167 seconds,

Substitute these value into equation 2

F = 1/0.0167

F = 60 Hz

HEY CAN ANYONE PLS HELP ME IN DIS! Which prefix represents a unit that is larger than "centi-" ? a. "nano-" b. "pico-" c. "milli-" d. "deci-" e. "micro-"

Answers

i believe it’s d.)deci

How long does it take a car to cross a 20m bridge if it starts from rest and accelerates at 5 m/s^2?
2s
1.89s
1.41s
1.41 m
2.8s

Answers

The correct answer is 2.8s

we do not use water instead of mercury in a barometer​

Answers

Answer:

Mercury is commonly used in barometers because its high density means the height of the column can be a reasonable size to measure atmospheric pressure.

who is the winner of khatron khiladi made in india 2020​

Answers

Answer:

karishma tanna

Explanation:

it is correct

Karishma Tanna was declared as the winner.

A boat that moves with a constant velocity of 12 m/s is moving on a river with a
constant current of 4 m/s. What is the resultant velocity of the boat if:
a) The boat is traveling to the north and the current is to the south?
b) The boat is traveling to the south and the current is to the south?
c) The boat travels to the east, across the current, while the current is to the south.

Answers

Explanation:

Given that,

Velocity of boat, [tex]v_b=12\ m/s[/tex]

Velocity of current, [tex]v_c=4\ m/s[/tex]

(a) If the boat is traveling to the north and the current is to the south,

[tex]v_b=12j\ m/s[/tex]

[tex]v_c=-4j\ m/s[/tex]

The resultant velocity,

[tex]v_r=12-(4)=8\ m/s[/tex] due North

(b) If boat is traveling to the south and the current is to the south,

[tex]v_b=-12j\ m/s[/tex]

[tex]v_c=-4j\ m/s[/tex]

Resultant velocity,

[tex]v_r=12+4=16\ m/s[/tex] due south

(c) If the boat travels to the east, across the current, while the current is to the south.

So,

[tex]v_r=\sqrt{12^2+4^2}\\ \\v_r=12.64\ m/s[/tex]

an electric heater takes 4 A when operated on 250 V supply. calculate the cost of the electricity consumed at 10k per kWh when the heater is used for 4 hours​

Answers

Answer:

P=IV.

P=4×250=1000.

(1000/1000)kw×4.

1×4=4×10=40k.

An object with a density of 0.85 g/cc is dropped into each of the two beakers shown below. Beaker 1 has a density of 0.5 g/cc. Beaker 2 has a density of 1 g/cc. What will happen to the object in each case?

Answers

Answer:

The object will sink in the liquid in beaker 1.

The object will float in the liquid in beaker 2

Explanation:

The density of an object relative to the density of a fluid determines if the object floats or sink in a fluid. The density of a material is the measure of the amount of mass of that material packed into a unit volume of that material.

For the beaker 1, the liquid in this beaker has a density of 0.5 g/cc, which is lesser than the density of the object (0.85 g/cc). This means that the object will add more mass than there should be to the volume of the space it displaces within the field. This results in the object sinking in the fluid.

For beaker 2, the liquid in this beaker has a density of 1 g/cc, which is more than the density of the object (0.85 g/cc). This means that the object will add less mass than there should be to the volume of the space it displaces within the field. This results in the object floating in the fluid.

which of the following substances is a base? ammonia, distilled water, lemon juice, or vinegar

Answers

The answer is Ammonia.

Which of the following element has seven total valence electrons? Your answer: argon helium oxygen bromine

Answers

Answer:

bromine

Explanation:

Any element in the halogen group will have seven valence electrons. These elements include fluorine, chlorine, bromine, iodine, and astatine

In descriptive scientific investigations, scientists often make observations to understand the interacting parts of a complex .

Answers

The answer is system

Answer:

system

Explanation:

I js took the test

An ant can travel approximately 30 meters per minute. How many meters could an ant move in 45 minutes.

Answers

Answer:

From what I see, it's saying that every minute, the ant can move 30 meters.  So how many meter would it move in 45 minutes?

30 meters = 1 min

x meters = 45 min

1 min x 45 = 45 min

30 meters x 45 = 1,350 meters

So, I believe the answer would be 1,350 meters.

hope this helps. :>

A small metal sphere has a mass of 0.19 gg and a charge of -23.0 nCnC. It is 10.0 cmcm directly above an identical sphere that has the same charge. This lower sphere is fixed and cannot move. If the upper sphere is released, it will begin to fall.What is the magnitude of its initial acceleration?

Answers

Answer:

  a = -7.29 m / s²

Explanation:

For this exercise we must use Newton's second law,

          F -W = m a

Force is electrical force

         F = k q₁ q₂ / r²

         k q₁ q₂ / r² -mg = m a

indicate that the charge of the two spheres is equal

         q₁ = q₂ = q

         a = (k q² / r² - m g) / m

         a = k q² / m r² - g

Let's reduce the magnitudes to the SI system

        m = 0.19 g (1kg / 1000 g) = 1.9 10⁻⁴ kg

        q1 = q2 = q = -23.0 nC (1C / 10⁹ nC) = -23.0 10⁻⁹ C

        r = 10.0 cm (1m / 100cm) = 0.1000 m

let's calculate

        a = 9 10⁹ (23.0 10⁻⁹)² / (0.1000² 1.9 10⁻⁴) - 9.8

        a = -7.29 m / s²

The negative sign indicates that the direction of this acceleration is downward

The model below shows a calcium atom. An image has a mix of red and blue balls in its center and 4 concentric black rings around the center. The first ring from the center has 2 small green balls on it. The second ring has 8 small green balls on it. The third ring has 8 small green balls on it. The outermost ring has 2 small green balls on it. How many electrons are in the third energy level?

Answers

Answer:

8 electrons in the third energy level

Explanation:

From the description,the third energy level has 8 electron (represented by the small green balls you describe)

Answer:

8

Explanation:

I gotcha fam

What is the following correct way to write 2,330,000 In a scientific notation

Answers

Answer:

2.33 × 10^6

hope this helps.

Answer:

2.33 x 106

Explanation:

it is right promise

exlpain the process of harvesting ​

Answers

Answer:

harvesting is a proscess of gathering a ripe crop from the fileds

Explanation:

Pls help
Qn 9,10,11

Qn 11
Answers,
a) 10g/cm3
b) 20g/cm3
c) 30g/cm3
d) 40g/cm3

Answers

Answer:

Q no. 9: a

Q no. 10: d

Q no. 11: b

Why is a thermos considered a (mostly) closed system?
thermoses come in different shapes and sizes
different types of liquids
stayhot
matter and energy cannot enter or leave the system when the thermos lid is on
tightly
different types of hot or cold items can be stored in a thermos

Answers

Answer:

The answer is C. Matter and energy cannot enter or leave the system when the thermos lid is on tightly.

Hope this helps

Thermos considered a closed system as matter and energy cannot enter or leave the system when the thermos lid is on tightly. The correct option is C.

What is a physical system?

Any artifact or part of an object that can be evaluated using physics laws is referred to as a physical system.

Physical systems include atoms and bodies of water. The environment is everything outside the system, and it is overlooked in the assessment except for its impacts on the system.

A physical system is a combination of parts or elements that exhibit behavior that the constituents do not. Physical systems are made up of matter and energy.

In physics, chemistry, or engineering, a closed system is a purely natural system that does not permit the transmission of matter into or out of the system, but does allow the transfer of energy.

Thus, C is the correct answer.

For more details regarding a physical system, visit:

https://brainly.com/question/11114957

#SPJ2

john can travel to atlanta 560 miles in 9 hours what is his velocity

Answers

Answer:

132

Explanation:

A boat sailed 7 hours at speed of 80km/h

Answers

The boat traveled 560km total.

Answer:

No it’s 1,130

Explanation:

I did online


Lee is traveling in a train moving at a constant velocity of 35 m/s to the east. If Lee is seated on the train and staring at the seat directly in front of him, how fast does the seat in front of Lee appear to be moving relative to Lee?

Answers

Answer:

0 m/s or stationary

The seat in front of Lee appear to be at rest

Explanation:

When the motion of a person or object is found by comparing the person or objects motion with regards to a stationary object or an object in motion, the result is the relative motion of the person or object to the stationary or moving object

In the question, Lee is comparing the motion of the chair in front of him with regards to the motion of the chair he his sitting on.

The speed of both chairs are the same as the speed of the train in which they are attached.

Therefore, as the seats are fixed relative to each other such that there is no change in their relative position and therefore, no or 0 m/s relative velocity with each other.

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