1answer.
Ask question
Login Signup
Ask question
All categories
  • English
  • Mathematics
  • Social Studies
  • Business
  • History
  • Health
  • Geography
  • Biology
  • Physics
  • Chemistry
  • Computers and Technology
  • Arts
  • World Languages
  • Spanish
  • French
  • German
  • Advanced Placement (AP)
  • SAT
  • Medicine
  • Law
  • Engineering
Effectus [21]
3 years ago
12

A 1000-kg space probe is motionless in space. to start moving, its main engine is fired for 5 s during which time it ejects exha

ust gases at 5000 m/s. at the end of this process it is moving at 20 m/s. the approximate mass of the ejected gas is:
Physics
1 answer:
photoshop1234 [79]3 years ago
8 0
<span>When a collision occurs, the change in momentum, is the difference in the momentums of the two objects after the collision minus the momentum of the object before the collision. From the aforementioned , we have change in momentum to be final momentum after collision - momentum before collision. But then the impulse of the fird bullet is just the change in momentum. Impulse = Ft where F = Ma. Where F= force and a is the acceleration. F = 1000* a; since a = V/t; i. e change in velocity by time. So we have 5000/5 =1000ms^2. Hence F = 1000 * 1000 = 1000000N. Then our Impulse , Ft = 1000000 * 5 = 5000000N. Momentum just before collision = 1000 * 500 = 500000. After collision we have final momentum = m * 20 where m is the mass after collsion. So we have 20M - 500000 = 5000000. 20M = 5000000-500000 = 4500000. M = 225000Kg.</span>
You might be interested in
The scale is called an absolute temperature scale, and it's zero point is called absolute sero
Kipish [7]
Absolute zero is from the Kelvin scale.
8 0
3 years ago
Earth's atmosphere contains only small amounts of carbon dioxide because
Mamont248 [21]
Of biogeochemical cycles

Because certain biogeochemical cycles take place to lessen these gases from forming since they are not beneficial for life if too much.
Thank you for your question. Please don't hesitate to ask in Brainly your queries. 
4 0
3 years ago
Points a and b lie in a region where the y-component of the electric field is Ey=α+β/y2. The constants in this expression have t
Drupady [299]

Answer:

V_{a} - V_{b} = 89.3

Explanation:

The electric potential is defined by

         V_{b} - V_{a} = - ∫ E .ds

In this case the electric field is in the direction and the points (ds) are also in the direction and therefore the angle is zero and the scalar product is reduced to the algebraic product.

         V_{b} - V_{a} = - ∫ E ds

We substitute

         V_{b} - V_{a} = - ∫ (α + β/ y²) dy

We integrate

          V_{b} - V_{a} = - α y + β / y

We evaluate between the lower limit A  2 cm = 0.02 m and the upper limit B 3 cm = 0.03 m

           V_{b} - V_{a} = - α (0.03 - 0.02) + β (1 / 0.03 - 1 / 0.02)

            V_{b} - V_{a} = - 600 0.01 + 5 (-16.67) = -6 - 83.33

            V_{b} - V_{a} = - 89.3 V

As they ask us the reverse case

             V_{b} - V_{a} = - V_{b} - V_{a}

             V_{a} - V_{b} = 89.3

3 0
3 years ago
Which element could not form in the sun and would have to be formed in a supernova?
Nimfa-mama [501]
Uranium (atomic number 92)
3 0
3 years ago
Waves going through a material is called
Damm [24]
Material medium electric waves
7 0
2 years ago
Other questions:
  • A piece of aluminum requires 4,000 J of energy to change
    15·1 answer
  • A baseball is dropped off the side of a cliff. It free-falls to the ground in 8 seconds. During the third second, the ball is tr
    6·2 answers
  • 1. How is electric potential energy similar to gravitational potential energy? How is it different? Where will an electron bound
    5·1 answer
  • What is the relationship between the line current i l and the phase current i1 in a balanced delta system?
    12·1 answer
  • All elements in the same group____
    12·1 answer
  • Object B has a mass of 8 kg and was lifted at a rate of 3 m/s. What is the kinetic energy of object B?
    5·1 answer
  • Larry and Balky set up an experiment to analyze the motion of a marble as it rolled down an incline. They started the marble at
    6·2 answers
  • A car accident occurs around midnight on the night of a full moon. The driver at fault claims he was blinded momentarily by the
    7·2 answers
  • What frequency will you hear if a truck is driving toward you at 20 m/s sounding a horn of frequency 300 Hz. Assume the speed of
    7·1 answer
  • A 97.3 kg horizontal circular platform rotates freely with no friction about its center at an initial angular velocity of 1.67 r
    12·1 answer
Add answer
Login
Not registered? Fast signup
Signup
Login Signup
Ask question!