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
o-na [289]
3 years ago
11

What are the uses of rockets ​

Physics
1 answer:
lora16 [44]3 years ago
8 0

They are used to be able to go out of Earth and into space to Be able to explore and toBe able to prove and tell about Earth and space

You might be interested in
An unstable particle at rest breaks up into two fragments of unequal mass. The mass of the lighter fragment is equal to 2.90 ✕ 1
motikmotik

Answer:

The speed of the heavier fragment is 0.335c.

Explanation:

Given that,

Mass of the lighter fragment M_{l}=2.90\times10^{-28}\ kg

Mass of the heavier fragment M_{h}=1.62\times10^{-27}\ Kg

Speed of lighter fragment = 0.893c

We need to calculate the speed of the heavier fragment

Let v is the speed of the second fragment after decay

Using conservation of relativistic momentum

0=\drac{m_{1}v_{1}}{\sqrt{1-\dfrac{v_{1}^2}{c^2}}}-\drac{m_{2}v_{2}}{\sqrt{1-\dfrac{v_{1}^2}{c^2}}}

\drac{m_{1}v_{1}}{\sqrt{1-\dfrac{v_{1}^2}{c^2}}}=\drac{m_{2}v_{2}}{\sqrt{1-\dfrac{v_{1}^2}{c^2}}}

\dfrac{2.90\times10^{-28}\times0.893c}{\sqrt{1-(0.893)^2}}=\dfrac{1.62\times10^{-27}v_{2}}{\sqrt{1-\dfrac{v_{2}^2}{c^2}}}

\dfrac{v_{2}}{\sqrt{1-\dfrac{v_{2}^2}{c^2}}}=\dfrac{2.90\times10^{-28}\times0.893c}{1.62\times10^{-27}\times0.45}

\dfrac{v_{2}}{\sqrt{1-\dfrac{v_{2}^2}{c^2}}}=0.355c

\dfrac{v_{2}}{1-\dfrac{v_{2}^{2}}{c^2}}=(0.355c)^2

\dfrac{1-\dfrac{v_{2}^2}{c^2}}{v_{2}^2}=\dfrac{1}{(0.355c)}

\dfrac{1}{v_{2}^2}-\dfrac{1}{c^2}=\dfrac{1}{(0.355c)^2}

\dfrac{1}{v_{2}^2}=\dfrac{1}{c^2}+\dfrac{1}{0.126c^2}

\dfrac{1}{v_{2}^2}=\dfrac{1}{c^2}(1+\dfrac{1}{0.126})

\dfrac{1}{v_{2}^2}=\dfrac{8.93}{c^2}

v_{2}^2=\dfrac{c^2}{8.93}

v_{2}=0.335c

Hence, The speed of the heavier fragment is 0.335c.

7 0
3 years ago
A guitar string vibrates at a frequency of 330Hz with wavelength 1.40m. The frequency and wavelength of this sound wave in air (
bixtya [17]

Answer:

Same frequency, shorter wavelength

Explanation:

The speed of a wave is given by

v=f\lambda

\lambda=\dfrac{v}{f}

where,

f = Frequency

\lambda = Wavelength

It can be seen that the wavelength is directly proportional to the velocity.

Here the frequency of the sound does not change.

But the velocity of the sound in air is slower.

Hence, the frequency remains same and the wavelength shortens.

7 0
3 years ago
How many atoms of each element are in the reactants?
Gnom [1K]
6.022*10^23 atoms/mole of reactant
(this is chemistry not physics)
6 0
3 years ago
What is the resultant force acting on an object if both forces act in the
Flura [38]

Explanation:

Touch and hold a clip to pin it. Unpinned clips will be deleted after 1 hour.Touch and hold a clip to pin it. Unpinned clips will be deleted after 1 hour.

4 0
3 years ago
If a student is sitting in their chair and the leg of the chair breaks the student will __________ toward the floor because the
USPshnik [31]

Answer:

theyll accelerate towards the floor :)

5 0
3 years ago
Read 2 more answers
Other questions:
  • What is a plane mirror ? ​
    10·1 answer
  • Newton’s Second Law of motion defines force in terms of mass and acceleration, F= ma. Which of the following is false? The term
    12·1 answer
  • What voltage must be applied to an 6 nF capacitor to store 0.14 mC of charge? Give answer in terms of kV.
    13·1 answer
  • A 12,000-N car is raised using a hydraulic lift, which consists of a U-tube with arms of unequal areas, filled with oil with a d
    13·1 answer
  • A jet airplane flying from Darwin, Australia, has an air speed of 260 m/s in a direction 5.0º south of west. It is in the jet st
    13·1 answer
  • NEED HELP ASAP!!!!!!!!!!!!!!!!!!!!!!!!!!!!!
    10·2 answers
  • Under what conditions is energy conserved
    10·1 answer
  • Which city did King David make the royal capital of the Kingdom of Israel?
    7·1 answer
  • The range of a projectile is found by multiplying which two factors?
    13·1 answer
  • Which process generates energy in the Sun?1) nuclear fusion2) nuclear fission3) chain reaction4) transmutation
    7·1 answer
Add answer
Login
Not registered? Fast signup
Signup
Login Signup
Ask question!