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
Jet001 [13]
3 years ago
5

Oque e um projeto de vida​

Physics
1 answer:
zavuch27 [327]3 years ago
8 0

Answer:

bahasa Indonesia janga

You might be interested in
What is the distance that a car travels if it was brought to stop in 5 seconds and if it was traveling at 110 Km/h
Triss [41]

Answer:

Suppose that the acceleration is a constant, a.

a(t) = a.

To write the velocity equation, we must integrate over time, and the constant of integration will be equal to the initial velocity, in this case is 110km/h.

v(t) = a*t + 110km/h

And we know that at t = 5s, the car was brought to stop, so the velocity must be zero.

v(5s) = 0 = a*5s + 110km/h.

a = (110km/h)*(1/5s)

now we have that:

1 hour = 3600 seconds.

1km = 1000m

then:

110km/h = (110*1000/3600)m/s = 30.56 m/s

Then we have:

a = (-30.55 m/s)/5s = -6.11 m/s^2

Now the velocity equation is:

v(t) = -6.11m/s^2*t + 30.56m/s

To write the positon equation we must integrate over time again, we can get:

p(t) = (1/2)*(-6.11m/s^2)*t^2 + (30.56m/s)*t + p0

Where p0 is the initial position, here i will assume that is zero, because it does no really mater.

The total displacement of the car will be equal to p(5s)

p(5s) = (1/2)*(-6.11m/s^2)*(5s)^2 + (30.56m/s)*(5s) = 76.425 meters.

6 0
3 years ago
500 J of work are done in 4 seconds to lift a 40 kg box to the top of a high shelf. How much power was required to complete the
Artemon [7]

Answer:

125 W

Explanation:

Power = work / time

P = 500 J / 4 s

P = 125 W

5 0
3 years ago
Which statement is the correct representation of these electric field lines?
Kipish [7]

Note that the electric field lines begin from the higher voltage to the lower

Because the negative pole is lower voltage than the positive pole

The lines go out the positive charges and go in the negative charges

Then, the correct statement is:

<u>C. Source A is negatively charged and source B is positively charged.</u>

5 0
3 years ago
Read 2 more answers
If a→=3i^-2j^-k^ and b→=i^+4j^+k^, find a unit vector n^ normal to the plane containing a→ and b→ such that a→, b→ and n^, in th
Vladimir [108]

vector a = 3i - 2j - k and vector b = i + 4j + k, the unit vector, n, normal to the plane is (7i - j + 7k)/3√11

What is a vector?

A vector is a quantity having direction as well as magnitude.

Vectors can especially be used in determining the position of one point in space relative to another.

From the question,

The normal vector to the plane is c = a × b

we have that, a = 3i - 2j - k and b = i + 4j + k,

c = a × b

c = (3i - 2j - k) × (i + 4j + k)

= 3i × i + (- 2j) × i + (-k) × i + 3i × 4j + (- 2j) × 4j + (-k) × 4j + 3i × k + (- 2j) × k + (-k) × k

= 3i × i - 2j × i - k × i + 12i × j - 8j × j - 4k × 4j + 3i × k - 2j × k - k × k

It is known that

i × i = 0,

j × j = 0 and

k × k = 0.

we also have that

c = 3(0) - 2(-k) - (-j) + 12k - 8(0) - 16(-i) + 3(-j) - 2i - 0

c = 0 + 2k + j + 12k - 0 + 16i - 3j - 2i

c = 16i - 2i + j - 3j + 2k + 12k

c = 14i -2j + 14k

The unit vector normal to the plane n = c/ |c|

where |c| is the magnitude of c

= √(14² + (-2)² + 14²) = √(196 + 4 + 196)

= √396

= √(36 × 11)

= 6√11

we can write that n = c/|c|

= (14i -2j + 14k)/6√11

we simplify further

= 2(7i - j + 7k)/6√11

= (7i - j + 7k)/3√11

So, the unit vector normal to the plane is (7i - j + 7k)/3√11

Learn more about vectors at: brainly.com/question/25705666

#SPJ1

7 0
2 years ago
If a bus has a mass of 1,021 kg, how much does the bus weigh?
lisov135 [29]
m=1 \ 021 \ kg \\ g=10 \ m/s^2 \\ \boxed{W-?} \\ \bold{Solving:} \\ \boxed{W=m \cdot g} \\ W=1 \ 021 \ kg \cdot 10 \ m/s^2 \\ \Rightarrow \boxed{W=10 \ 210 \ N}
6 0
3 years ago
Other questions:
  • Beaker A contains 100 mL of water at a temperature of 25 °C. Beaker B contains 100 mL of water at a temperature of 60 °C. Which
    8·1 answer
  • The color of a star depends on its , and -colored stars are the coolest.
    15·2 answers
  • A 1,492.3-kg airplane travels down the runway. Each of its four engines provides a force of
    6·1 answer
  • A rotating fan completes 1200 revolutions every minute. Consider the tip of a blade, at a radius of 0.15 m. (a) Through what dis
    8·1 answer
  • The law of conservation of energy states that
    14·1 answer
  • How fast would a 2-kilogram object need to move to have the same kinetic
    15·1 answer
  • A train moves from rest to a speed of 25 m/s in 50.0 seconds. What is its acceleration?
    9·1 answer
  • Can anybody help me please?
    11·1 answer
  • Incentives influence people's economic decisions by:
    5·2 answers
  • https://brainly.com/question/add?entry=1642&amp;task_content=Tania+was+asked+to+describe+the+relashio+of+electrity+and+magnetism
    12·1 answer
Add answer
Login
Not registered? Fast signup
Signup
Login Signup
Ask question!