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
Brilliant_brown [7]
3 years ago
12

Should I apply for the Trusted Helpers Program? I want a real answer, if you don’t understand it don’t answer.

Physics
2 answers:
Svetradugi [14.3K]3 years ago
8 0

Yes you should if you will like to. It is your opinion so follow your dreams if they are your dreams.

Alex17521 [72]3 years ago
6 0

do what your heart tells you

You might be interested in
A 50 kg runner runs up a flight of stairs. The runner starts out covering 3 steps every second. At the end the runner stops. Thi
nadezda [96]

To solve the problem it is necessary to take into account the concepts of kinematic equations of motion and the work done by a body.

In the case of work, we know that it is defined by,

W = F * d

Where,

F= Force

d = Distance

The distance in this case is a composition between number of steps and the height. Then,

d=h*N, for h as the height of each step and N number of steps.

On the other hand we have the speed changes, depending on the displacement and acceleration (omitting time)

V_f^2-V_i^2 = 2a\Delta X

Where,

V_f = Final velocity

V_i = Initial Velocity

a = Acceleration

\Delta X = Displacement

PART A) For the particular case of work we know then that,

W = F*d

W = m*g*(h*N)

W = 50*9.8*(0.3*30)

W = 4.41kJ

Therefore the Work to do that activity is 4.41kJ

PART B) To find the acceleration (from which we can later find the time) we start from the previously given equation,

V_f^2-V_i^2 = 2a\Delta X

Here,

V_i = \frac{0.3*3}{1} = 0.90m/s\rightarrow3 steps in one second

v_f = 0

Replacing,

V_f^2-V_i^2 = 2a\Delta X

0-0.9^2=2a(30*0.3)

Re-arrange for a,

a = -\frac{0.9^2}{2*30*0.3}

a = -45*10^{-3}m/s^2

At this point we can calculate the time, which is,

t = \frac{\Delta V}{a}

t = \frac{0-0.9}{-45*10^{-3}}

t = 20s

With time and work we can finally calculate the power

P = \frac{W}{t} = \frac{4.41}{20}

P = 0.2205kW

6 0
3 years ago
Calculate a pendulum's frequency of oscillation (in Hz) if the pendulum completes one cycle in 0.5 s.
Marina86 [1]
Time taken to complete one oscillation for a pendulum is Time Period, T = 0.5 s 
Frequency of the pendulum oscillation = 1 / Time Period => f = 1 / T = 1 / 0.5  
Frequency f = 2 Hz
3 0
3 years ago
"Force" can be defined as a push or a<br> O pull<br> O grab
Nady [450]

Answer:

pull

is your answer please give me some thanks

4 0
2 years ago
Read 2 more answers
acceleration is defined as the rate of change for which characteristic? a. displacement b. position c. velocity d. time
fredd [130]
The answer is velocity.
7 0
3 years ago
.<br><br> 1. True False<br> In AM waves, amplitude changes.
Dennis_Churaev [7]
That is true Step by step:
3 0
2 years ago
Read 2 more answers
Other questions:
  • B. A guitar string has a length of 0.90 m. When you pluck it, it plays a “C” that has a frequency of 256 Hz. How fast is the wav
    12·1 answer
  • 2.85 A police car is traveling at a velocity of 18.0 m/s due north, when a car zooms by at a constant velocity of 42.0 m/s due n
    11·1 answer
  • Meteors start to break up in the stratosphere true or false​
    10·2 answers
  • No interior de um calorímetro de capacidade térmica 6 cal/°C encontram-se 85 g de um líquido a 18°C. Um bloco de cobre de massa
    15·2 answers
  • In which region of the electromagnetic spectrum is this radiation found?
    9·1 answer
  • A tiger is running across a field. What would happen if the hydrogen ion pumps into the tigers mitochondria stopped functioning
    5·1 answer
  • Explain applications
    14·1 answer
  • A 2300 kg sailboat is moving west at 5.5 m/s when an eastward wind
    7·1 answer
  • A scientist runs an electric current along a wire. A magnetic compass is placed near the wire. The scientist observes that whene
    8·1 answer
  • Explain the relation between Joule and Erg.​
    10·2 answers
Add answer
Login
Not registered? Fast signup
Signup
Login Signup
Ask question!