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
vampirchik [111]
3 years ago
9

The density of water is 10*3 kg/m*3. the water pressure on a submarine is 2.0 x 10*7 N/m*2. The depth of the submarine below the

surface of water in meters is?
Physics
1 answer:
Marat540 [252]3 years ago
8 0

Answer:

2000metres

Explanation:

Pressure= density x height x gravity

Gravity is always a constant = 10N/kg

so height= Pressure/( density x gravity)

h= 20000000/(1000 x10)

h= 2000 metres

You might be interested in
If a star contains a certain element, it can be determined by studying the star’s
valentina_108 [34]
A. Emission spectrum
3 0
4 years ago
Why are peer reviews important
Gre4nikov [31]

Answer: So they can find your mistakes that you made you skipped over

Explanation:

7 0
4 years ago
Read 2 more answers
A roundabout is a type of playground equipment involving a large flat metal disk that is able to spin about its center axis. A r
Zina [86]

Answer:

116.1 kgm²/s

1.12718 rad/s

Decreases

Explanation:

m = Mass of girl = 43 kg

M = Mass of roundabout = 120 kg

v = Velocity of roundabout = 2.7 m/s

r = Radius of roundabout = 1 m = R

I = Moment of inertia

Her angular momentum

L_i=mvr\\\Rightarrow L_i=43\times 2.7\times 1\\\Rightarrow L_i=116.1\ kgm^2/s

Magnitude of angular momentum is 116.1 kgm²/s

Here the angular momentum is conserved

L_f=L_i\\\Rightarrow I\omega=L_i\\\Rightarrow (\frac{1}{2}MR^2+mr^2)\omega=116.1\\\Rightarrow \omega=\frac{116.1}{\frac{1}{2}\times 120\times 1^2+43\times 1^2}\\\Rightarrow \omega=1.12718\ rad/s

Angular speed of the roundabout is 1.12718 rad/s

Initial kinetic energy

K_i=\frac{1}{2}mv^2\\\Rightarrow K_i=\frac{1}{2}43\times 2.7^2\\\Rightarrow K_i=156.735\ J

Final kinetic energy

K_f=\frac{1}{2}I\omega^2\\\Rightarrow K_f=\frac{1}{2}\times (\frac{1}{2}\times 120\times 1^2+43\times 1^2)\times 1.12718^2\\\Rightarrow K_f=65.43253\ J

The overall kinetic energy decreases as can be seen. This loss is converted to heat.

5 0
3 years ago
PLZ HELP Lab: Circuit Design
Masteriza [31]

Answer:

3

Explanation:

6 0
3 years ago
Rubidium forms the positive ion Rb+. Does this ion have more or fewer electrons than the neutral atom?
ohaa [14]

Answer:

The ion has fewer electrons

Explanation:

As Rubidium forms a positive ion Rb⁺ the number of electrons becomes fewer for the atom.

  • A positive charge on an ion indicates that the number of protons for the atom is greater than the number of electrons.
  • This leaves a net positive charge on the atom.
  • For a negatively charged ion, the number of electrons is more than the number of protons because they have gained additional electrons.
  • In a neutral atom, the number of protons and electrons are the same.
7 0
3 years ago
Other questions:
  • HELP PLEASE ASAP
    14·2 answers
  • If three devices are plugged into one port on a switch and two devices are plugged into a different port, how many collision dom
    11·1 answer
  • A sound from a source has an intensity of 270 db when it is 1 m from the source. what is the intensity of the sound when it is 3
    8·1 answer
  • A parachutist of mass 75kg descends with an acceleration of 8 m/s2. What is the upward force exerted by the air on the parachuti
    12·1 answer
  • What is the net force necessary for a 1.6 x 103 kg car to accelerate forward at 2.0<br> m/s?
    15·1 answer
  • Osteoporosis is a condition that makes bones more
    12·1 answer
  • PLEASE HELPPP<br> answer choices are insulator and conductor
    11·1 answer
  • Lithium has an atomic number of 3. How many electrons does it have?
    7·2 answers
  • Course Task
    14·1 answer
  • A rocket takes off from Earth's surface, accelerating straight up at 69.2 m/s2. Calculate the normal force (in N) acting on an a
    11·1 answer
Add answer
Login
Not registered? Fast signup
Signup
Login Signup
Ask question!