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
Temka [501]
3 years ago
10

Can anyone tell me what's the base quantities for Force, Pressure and Charge?​

Physics
1 answer:
mr Goodwill [35]3 years ago
4 0

Force, pressure, and charge are all what are called <em>derived units</em>. They come from algebraic combinations of <em>base units</em>, measures of things like length, time, temperature, mass, and current. <em>Speed, </em>for instance, is a derived unit, since it's a combination of length and time in the form [speed] = [length] / [time] (miles per hour, meters per second, etc.)

Force is defined with Newton's equation F = ma, where m is an object's mass and a is its acceleration. It's unit is kg·m/s², which scientists have called a <em>Newton</em>. (Example: They used <em>9 Newtons</em> of force)

Pressure is force applied over an area, defined by the equation P = F/A. We can derive its from Newtons to get a unit of N/m², a unit scientists call the <em>Pascal</em>. (Example: Applying <em>100 Pascals </em>of pressure)

Finally, charge is given by the equation Q = It, where I is the current flowing through an object and t is how long that current flows through. It has a unit of A·s (ampere-seconds), but scientist call this unit a Coulomb. (Example: 20 <em>Coulombs</em> of charge)

You might be interested in
Positive charge Q is distributed uniformly along the x-axis fromx=0 to x=a. A positive point charge q is located on the positive
dybincka [34]

Answer:

a. b- x= y

dx = -dy

b. F = \frac{-kQqi}{r (a+r)}

c.  F = \frac{-kQqi}{r^{2} }

Explanation:

a. x components:

dE = \frac{kdq}{(a+r-x^{2}) } \\

     = \frac{kQdx}{(a(a+r-x)^2}

Integrating and solving gives:

b- x= y

dx = -dy

b. the force is given by the equation derived from (a.):

F = \frac{-kQqi}{r (a+r)}

c. Given that r>>a, the expression becomes:

F = \frac{-kQqi}{r^{2} }

Explanation:

When the size of the charge distribution is less than the distance to the deviation point of the charge then the charge distribution would produce the same effect such as a linear charge.

6 0
3 years ago
A car accelerates from 20mi/hr to 60mi/hr. How many times greater is the car's kinetic energy at the higher speed compared to th
Ainat [17]

Answer:

9 times

Explanation:

Kinetic energy is:

KE = ½ mv²

When we triple the velocity, the kinetic energy increases by a factor of 9.

9KE = ½ m(3v)²

4 0
3 years ago
Robert has just bought a new model roket, and is trying to measure its flight characteristics. The rocket engine package claims
rewona [7]
At the peak of its flight ALL the energy given to the rocket is potential energy (its velocity is zero) and that is calculated as mgh So Energy given to rocket = mgh Energy expended by engine = F x D (D= height where engine stops) Energy 'lost' to drag is the difference between the two values. please if this helped mark it as the brainiest answer.
3 0
4 years ago
Magnets attract objects made up of _______;_______and _______​
mixas84 [53]
I think metal, steel and copper.
3 0
2 years ago
Which object has more gravitational potential energy? Use PE = m × g × h, where g = 9.8 meters/second2.
Andrew [12]
Gravitational potential energy can be calculated using the formula <span>PE = m × g × h, where g is the gravitational acceleration and is constant hence the energy is dependent directly to mass and the height of the object. Hence more PE is registered when the object is heavier and/or at greater initial height. </span>
6 0
3 years ago
Read 2 more answers
Other questions:
  • How much heat do you need to raise the temperature of 150 g of oxygen from -30c to -15c?
    11·2 answers
  • Choose the ending that best completes the following sentence: If an object is traveling with a constant velocity… A. There are n
    11·1 answer
  • What is the ratio of the intensities of an earthquake P wave passing through the Earth and detected at two points 14 km and 49 k
    10·1 answer
  • A railroad car with mass m is moving with an initial velocity v when it collides and connects with a second railroad car with a
    14·1 answer
  • Products must equal which in a chemical reaction?
    10·1 answer
  • Find the slope of the line that passes through the points (-1, 3) and (2, -5)-
    5·2 answers
  • If you can answer my last post ill give you 75 points pls its very important and please make sure it correct!!!!!!!
    5·2 answers
  • Omar rubs a balloon with wool, giving the balloon a
    7·1 answer
  • How much work is required for a 74 kg sprinter to accelerate from rest to 2.2 m/s?
    5·2 answers
  • A moonshiner makes the error of filling a glass jar to the brim and capping it tightly. The moonshine expands more than the glas
    12·1 answer
Add answer
Login
Not registered? Fast signup
Signup
Login Signup
Ask question!