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
dlinn [17]
3 years ago
14

A e B são dos blocos de massas 3,0 kg e 2,0 kg, respectivamente, que se movimentam juntos sobre uma superficie horizontal e perf

eitamente lisa. F é uma força de intensidade 30 N aplicada ao bloco A. A aceleração do sistema e a intensidade da força que B exerce em A são , respectivamente :
Physics
1 answer:
makvit [3.9K]3 years ago
6 0

F = m*a

30 N = (ma + mb) * a

30 = 5*a

a = 6 m/s ^2

F de B em A

30 - F de B,A = ma * a

30 - F de B em A = 3 * 6

30 - 18 = F de B em A

12 = F de B em A


Resposta: 6 m/s^2 e 12N

Bate com o gabarito, man? Ou eu tô viajando aqui?

Abç!

You might be interested in
what is the acceleration of an object if the object has an initial speed of 230 m/s and speeds up to 650 m/s. The time it takes
adell [148]

Answer:

explain this

Explanation:

7 0
3 years ago
What statement is true about a spring?
snow_tiger [21]
I think B is the most correct, because logically it's harder to bend a stiffer spring than it is to bend a softer one. Also, I don't think length comes into play. So B.
8 0
3 years ago
Read 2 more answers
Alright eksqijakojqnlqozjzbw.wlisj
saw5 [17]

Answer:

eksqijakojqnozjzbw.wlisjaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaa

Explanation:

6 0
3 years ago
You are trying to find out how high you have to pitch a water balloon in order for it to burst when it hits the ground. You disc
FrozenT [24]

Answer:

The balloon hit the ground with velocity -15.34 m/s

Explanation:

<em>Lets explain how to solve the problem</em>

You found that the best height to pitch a water balloon in order for it to

burst when it hits the ground is 12 meters.

We consider that the 12 meters is the maximum height, so the velocity

at this height is zero.

To find the velocity when the balloon hits the ground lets use the rule

<em>v² = u² + 2gh</em>, where v is the final velocity, u is the initial velocity, g is

the acceleration of gravity and h is the height.

u = 0 , h = 12 m , g = 9.8 m/s²

<em>Substitute these values in the equation above</em>

v² = 0 + 2(9.8)(12)

v² = 235.2

<em>Take square root for both sides</em>

v = ± \sqrt{235.2}

The velocity is downward, then it's a negative value

Then v = -15.34 m/s

<em>The balloon hit the ground with velocity -15.34 m/s</em>

6 0
3 years ago
Which takes longer to reach earth, light from the sun or light from other stars? Explain.
densk [106]
Light from other stars take longer to reach the earth because they are farther than our sun.
4 0
3 years ago
Read 2 more answers
Other questions:
  • If you wished to warm 100 kg of water by 15 degrees celsius for your bath, how much heat would be required? (give your answer in
    12·1 answer
  • A hypothetical spherical planet consists entirely of iron. what is the period of a satellite that orbits this planet just above
    15·1 answer
  • What are the similarities and differences between light and sound waves?
    15·2 answers
  • Which is true?
    5·2 answers
  • The vector quantity that defines the distance and direction between two positions.
    8·2 answers
  • Consider a system consisting of two Einstein solids, A and B, each containing N= 10 oscillators, and sharing a total of q= 20 un
    7·1 answer
  • Help????????????????
    8·1 answer
  • When you catch a baseball with a glove (instead of your hand), the glove helps by
    15·1 answer
  • A 12-V car battery supported a current of 150 mA to bulb calculate the power absorbed by the bulb over an interval of 20 mintues
    12·1 answer
  • A boulder of mass 4 kg rolls over a cliff and reaches the beach below with a velocity of 20 metres per second minus 1.
    11·1 answer
Add answer
Login
Not registered? Fast signup
Signup
Login Signup
Ask question!