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
cestrela7 [59]
3 years ago
12

HELP BRANLIEST

Physics
1 answer:
Vsevolod [243]3 years ago
3 0

Explanation:

- Newton's first law of motion:

"An object at rest (or in uniform motion) remains at rest (or in uniform motion) unless acted upon an unbalanced force

In this situation, we can apply Newton's first law to the keys of the keyboard that are not hit by the fingers of the man. In fact, as no force act on the keys, they remain at rest.

- Newton's second law of motion:

"The acceleration experienced by an object is proportional to the net force exerted on the object; mathematically:

F=ma

where F is the net force, m is the mass of the object, and a its acceleration"

In this case, we can apply Newton's second law to the keys of the keyboard that are hit by the man: in fact, as they are hit, they experience a downward force, and therefore they experience a downward acceleration.

"Newton's third law of motion:

"When an object A exerts a force on an object B (action force), then object B exerts an equal and opposite force on object A (reaction force)"

Here We can apply Newton's third law to the pair of objects finger-key: in fact, as the finger apply a force on the key (action force), then the key exerts a force back on the finger (reaction force), equal and opposite.

You might be interested in
the Space Program has benefitted people in everyday life. Describe two ways in which people can benefit
ycow [4]
So we can know what is in space maybe weird or interesting stuff 

8 0
3 years ago
A rocket sled is tested at "5 g" (5 times the acceleration due to gravity). If the sled starts from rest at position do= 0.00, h
stealth61 [152]
D=at²
441m=(5*9.81m/s²)(t²)
t²=441/(5*9.81)
t≈√8.99
t≈3 sec
8 0
2 years ago
Read 2 more answers
PlzHELP
Naddika [18.5K]
 Distance is a scalar quantity that refers to "how much ground an object has covered" during its motion.Displacement<span> is a vector quantity that refers to "how far out of place an object is"; it is the object's overall change in position.

</span>To calculate displacement<span>, simply draw a vector from your starting point to your final position and solve for the length of this line. If your starting and ending position are the same, like your circular 5K route, then your </span>displacement<span> is 0. In physics, </span>displacement<span> is represented by Δs.
 
 For me to solve this I would need to know the time, but I can give you a handy displacement calculator I used that helped me. 
 
https://www.easycalculation.com/physics/classical-physics/constant-acc-displacement.php

Hope I helped. 

</span> 

8 0
3 years ago
Movement of a molecule against its concentration gradient can occur through Select one or more: a. facilitated diffusion b. pass
uranmaximum [27]

Answer:

The answer to your question is:

Explanation:

There are two kinds of cell transport passive transportation and active transportation.

Passive transportation does not need energy because molecules move from higher concentration to lower concentration.

Active transportation needs energy because molecules moves against concentration.  

a. facilitated diffusion It's an example of passive transportation so this answer is wrong.

b. passive transport Molecules move in favor of concentration so this answer is wrong.

c. osmosis is another example of passive transport so this answer is wrong.

d. simple diffusion it's another example of passive transport, so it's wrong this answer.

e. active transport this is the right answer.

5 0
3 years ago
An escalator and an elevator can transport a person from one floor to the next. the escalator does it in 15 s and the elevator t
ad-work [718]

Answer:

The escalator does more work and the elevator has a greater power output.

Explanation:

The escalator does more work on the person because it is carrying them up. It also gives the person a chance to walk up the escalator making it a little more challenging than using just an elevator. The elevator has a greater power output because it can transport a person from one floor to another in just 10 seconds where as the escalator can do it in 15.

Hope this helps!

5 0
3 years ago
Other questions:
  • A bowling ball traveling with constant speed hits the pins at the end of a bowling lane 16.5 m long. The bowler hears the sound
    9·1 answer
  • in the diagram the solid eventually becomes a gas what will happen to bring the substance from a solid to a gas
    9·1 answer
  • What is the magnification of an astronomical telescope whose objective lens has a focal length of 71 cm and whose eyepiece has a
    8·1 answer
  • Define homogeneous.
    14·2 answers
  • Discuss the symmetry between the laws of Charles Coulomb and Sir Isaac Newton regarding forces
    14·2 answers
  • First to answer will be the brainliest I need the answer ASAP don't answer if you don't know the answer
    10·2 answers
  • How much work is done on a small car if a 3150 N force is exerted to move it 75.5 m to the side of the road
    11·1 answer
  • Electromotive force in a circuit;
    12·1 answer
  • What is the melting point of sand
    13·1 answer
  • In an MRI, the magnetic field B is generated by a solenoid of length 100 cm and diameter of 90 cm. The B field generated is one
    13·1 answer
Add answer
Login
Not registered? Fast signup
Signup
Login Signup
Ask question!