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
dedylja [7]
4 years ago
12

I need help on question 5

Physics
1 answer:
11Alexandr11 [23.1K]4 years ago
3 0
Weathering, erosion, impact, pressure  
You might be interested in
Electromagnetic waves are commonly referred to as _________
mart [117]
It’s going to be both answer A and B but if you can only answer one then it’s going to be B
3 0
3 years ago
A train pulls away from a station with a constant acceleration of 0.42 m/s2. A passenger arrives at a point next to the track 6.
Rina8888 [55]

Answer:

2.69 m/s

Explanation:

Hi!

First lets find the position of the train as a function of time as seen by the passenger when he arrives to the train station. For this state, the train is at a position x0 given by:

x0 = (1/2)(0.42m/s^2)*(6.4s)^2 = 8.6016 m

So, the position as a function of time is:

xT(t)=(1/2)(0.42m/s^2)t^2 + x0 = (1/2)(0.42m/s^2)t^2 + 8.6016 m

Now, if the passanger is moving at a constant velocity of V, his position as a fucntion of time is given by:

xP(t)=V*t

In order for the passenger to catch the train

xP(t)=xT(t)

(1/2)(0.42m/s^2)t^2 + 8.6016 m = V*t

To solve this equation for t we make use of the quadratic formula, which has real solutions whenever its determinat is grater than zero:

0≤ b^2-4*a*c = V^2 - 4 * ((1/2)(0.42m/s^2)) * 8.6016 m =V^2 - 7.22534(m/s)^2

This equation give us the minimum velocity the passenger must have in order to catch the train:

V^2 - 7.22534(m/s)^2 = 0

V^2 = 7.22534(m/s)^2

V = 2.6879 m/s

4 0
3 years ago
Which of the following statement is not true about machines?
viva [34]
The answer to this question is D or the last one 

4 0
3 years ago
Read 2 more answers
A wind turbine is an example of what kind of device
Liula [17]

Answer:

it’s an example of a generator.

Explanation:

3 0
2 years ago
If a student flicks a stationary 0.1 kg ball with 5N of force for 0.1 seconds. What is its final
Alisiya [41]

5m/s

Explanation:

Given parameters:

Mass of ball = 0.1kg

Force on the ball = 5N

time taken = 0.1s

Unknown:

final speed of the ball = ?

Solution:

According to newton's second law "the net force on a body is the product of its mass and acceleration".

  Force = mass x acceleration      equation 1

Acceleration =

  V is the final velocity

  U is the initial velocity

  T is the time taken

 U = O since it is a stationary body;

      a = \frac{V}{T}

Input "a" into equation 1

  F = m x \frac{V}{T}

 5 = 0.1 x \frac{V}{0.1}

 V = 5m/s

learn more:

Newton's laws brainly.com/question/11411375

#learnwithBrainly

3 0
3 years ago
Other questions:
  • The witch in "Hansel and Gretel" owns a house made of cookies and candy for the ___ reason that she is sweet and kind, but actua
    9·1 answer
  • If I run back and forth on a basketball court that is 25 m long 12 times, and end up
    15·1 answer
  • Which of these statements best proves that electromagnetic forces are weaker than strong nuclear forces? Neutrons do not repel o
    8·1 answer
  • HELP!!!
    14·1 answer
  • Which graph represents a nonlinear relationship?
    14·2 answers
  • Which action is not an example of work?
    12·1 answer
  • Compare positive reinforcement and negative reinforcement.
    13·1 answer
  • A plane flies with an average velocity of -98 m/s for 45.0 s. What was its displacement
    8·1 answer
  • Which statements describe vectors?
    15·2 answers
  • A current of 0. 82 a flows through a light bulb. how much charge passes through the light bulb during 94 s?
    8·1 answer
Add answer
Login
Not registered? Fast signup
Signup
Login Signup
Ask question!