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
Karo-lina-s [1.5K]
3 years ago
13

How much force is needed to accelerate a 20 kg mass at a rate of 4 m/s to the second power?

Physics
2 answers:
LekaFEV [45]3 years ago
8 0

Answer:

80 N

Explanation:

mass (m) = 20kg

acceleration (a) = 4m/s^2

Force (F) = ?

.°. F = ma

= 20 × 4 = 80

.°. F = 80 N

Thus, The Force is needed to accelerate a 20 kg mass at a rate of 4 m/s^2 is 80 N

-TheUnknownScientist

dusya [7]3 years ago
6 0

Answer:

So 55 Newtons are needed.

You might be interested in
1. Spring force is proportional to stretch distance, F=kd. Do you expect doubling the stretch distance double the force?
Solnce55 [7]

Answer:

Yes

Explanation:

The spring force is given as:

          F  = kd

F is the spring force

K is the spring constant

d is the magnitude of the stretch

 Since k is a constant, therefore, doubling the stretch distance will double the force.

Both stretch distance and force applied can be said to be directly proportional to one another.

3 0
3 years ago
If you were told an atom was an ion, you would know the atom must have a
Effectus [21]
The atom must have gained 1 or more electrons or must have lost 1 or more electrons.
7 0
3 years ago
Read 2 more answers
Which statement about gravity is always True? A. The force of gravity between two objects is greater when the objects have less
garri49 [273]
The answer is c because the farther apart they are the greater there gravity is
4 0
3 years ago
Read 2 more answers
As the concentration of a solute in a solution increases, the freezing point of the solution ________ and the vapor pressure of
kykrilka [37]

Answer:

As the concentration of a solute in a solution increases, the freezing point of the solution <u><em>decrease </em></u>and the vapor pressure of the solution <em><u>decrease </u></em>.

Explanation:

Depression in freezing point :

\Delta T_f=K_f\times m

where,

\Delta T_f =depression in freezing point =  

K_f = freezing point constant  

m = molality  ( moles per kg of solvent) of the solution

As we can see that from the formula that higher the molality of the solution is directly proportionate to the depression in freezing point which means that:

  1. If molality of the solution in high the depression in freezing point of the solution will be more.
  2. If molality of the solution in low the depression in freezing point of teh solution will be lower .

Relative lowering in vapor pressure of the solution is given by :

\frac{p_o-p_s}{p_o}=\chi_{solute}

p_o = Vapor pressure of pure solvent

p_s  = Vapor pressure of solution

\chi_{solute} = Mole fraction of solute

p_s\propto \frac{1}{\chi_{solute}}

Vapor pressure of the solution is inversely proportional to the mole fraction of solute.

  1. Higher the concentration of solute more will the be solute's mole fraction and decrease in vapor pressure of the solution will be observed.
  2. lower the concentration of solute more will the be solute's mole fraction and increase in vapor pressure of the solution will be observed.
8 0
3 years ago
Why are electromagnets used in metal scrap yards?
Andrej [43]
Because the electromagnets can pick up magnetic material and move it around, hope this helps
8 0
3 years ago
Read 2 more answers
Other questions:
  • (a) What is the tangential acceleration of a bug on the rim of a 13.0-in.-diameter disk if the disk accelerates uniformly from r
    10·1 answer
  • What would happen if all the powers of government were held by one person or one group of people? Would it be a good thing or a
    9·1 answer
  • A coffee filter of mass 1.4 grams dropped from a height of 4 m reaches the ground with a speed of 0.9 m/s. How much kinetic ener
    5·1 answer
  • A solar-powered car is traveling at constant speed around a circular track. what happens to the centripetal acceleration of the
    7·1 answer
  • What does a kidney do
    13·2 answers
  • Acceleration is the magnitude of average velocity true or false
    12·1 answer
  • Some people today claim the Earth is flat. Produce an argument to prove that the
    8·2 answers
  • Please help.<br>Just True or False​
    13·1 answer
  • 3. A rescue plane drops a package to a stranded party of explorers. The plane is traveling horizontally at a velocity of
    14·1 answer
  • Please help asap 100 POINTS and BRAINLIEST to best answer.
    8·2 answers
Add answer
Login
Not registered? Fast signup
Signup
Login Signup
Ask question!