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
vladimir2022 [97]
3 years ago
5

A surface is bombarded by particles, each of mass small 'm', which have velocity

Physics
1 answer:
ale4655 [162]3 years ago
8 0

Answer:

B. 2nmv

Explanation:

Pressure is force over area.

P = F / A

Force is mass times acceleration.

F = ma

Acceleration is change in velocity over change in time.

a = Δv / Δt

Therefore:

F = m Δv / Δt

P = m Δv / (A Δt)

The total mass is nm.

The change in velocity is Δv = v − (-v) = 2v.

A = 1 and Δt = 1.

Plugging in:

P = (nm) (2v) / (1 × 1)

P = 2nmv

You might be interested in
A satellite with a mass of 2,000 ㎏ is inserted into an orbit that is twice the Earth' s radius. W hat is the force of gravity on
dolphi86 [110]

Answer:

option (b) 4900 N

Explanation:

m = 2000 kg, R = 6380 km = 6380 x 10^3 m, Me = 5.98 x 10^24 kg, h = R

F = G Me x m / (R + h)^2

F = G Me x m / 2R^2

F = 6.67 x 10^-11 x 5.98 x 10^24 x 2000 / (2 x 6380 x 10^3)^2

F = 4900 N

4 0
3 years ago
How are problems best solved by scientists?
spin [16.1K]
One scientist proposes an idea and other scientists repeat his or her experiments so they can Accept the Idea.
3 0
2 years ago
Read 2 more answers
What is trapezord mean
igor_vitrenko [27]
A quadrilateral with only one pair of parallel sides.
<span>a small carpal bone in the base of the hand, articulating with the metacarpal of the index finger.
</span>
5 0
3 years ago
1 point
WINSTONCH [101]

Answer:

 Mg- 27   means isotope with 12 protons and 15 neutrons.

Also 27 is mass number which express sum of protons and neutrons.

In nucleus one neutrn decays to electron and proton. Mass number remain same but Al-27 nucleus contain 13 protons and 14 neutrons. Electron is ejected out from nucleus.

7 0
3 years ago
In what ways can students use time management? Check all that apply.
Korvikt [17]

Answer: the answer is A, C, E

Explanation:

Time management is apart of your study schedule so you will need to determine when to study, same goes with how to use ur study time, lastly it helps create ur study schedule to help find out what time you are free to study. :)

7 0
3 years ago
Other questions:
  • A mole is __________ x 1023 objects.
    14·2 answers
  • How is the radiating electric field (or electromagnetic signal) produced when radio stations broadcast
    6·1 answer
  • Surface winds on Earth are primarily caused by differences in
    12·2 answers
  • In which one of the following four-stroke cylinder arrangements will the intake and exhaust valves open downward into the combus
    9·1 answer
  • Which of the following is an accurate comparison of the weight of an astronaut on the moon and the Earth? The weight of the astr
    8·2 answers
  • If you jumped out of a plane, you would begin speeding up as you fall downward. Eventually, due to wind resistance, your velocit
    13·1 answer
  • Select all the correct answers.
    8·1 answer
  • Which option correctly shows the concentration of H3O+ ions in pure water?
    14·1 answer
  • Popular foods in Israel
    7·2 answers
  • Anything that has mass and occupies space is defined as.
    11·1 answer
Add answer
Login
Not registered? Fast signup
Signup
Login Signup
Ask question!