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
solniwko [45]
4 years ago
9

PLEASE HELP ME this is due in 20 mins!!!!!

Physics
1 answer:
Marizza181 [45]4 years ago
8 0
The mechanical advantage of using this pulley system is equal to the amount of force used on the broomsticks. I used work times distance and the total distance was 15. I hope I answered this right lol!
You might be interested in
What is the ratio of a 0.7 in circle in centimeters.
kifflom [539]
I believe it would be 4.4
4 0
3 years ago
I need help on EM spectrum and waves​
Nutka1998 [239]
<h2>Answer:It is not affected by the change in media.</h2>

Explanation:

Transverse waves are those waves where the medium particles vibrate perpendicular to the direction of propagation.

Transverse waves do not require any medium.

They travel with same speed in any medium.

Electromagnetic waves are transverse waves where the medium particles vibrate perpendicular to the direction of propagation.

So,their speed is same in any medium.

3 0
4 years ago
The law of conservation of mass applies to all chemical reactions.
serious [3.7K]
True. No matter can be created nor destroyed in pretty much every aspect of life, especially chemical reactions.
3 0
3 years ago
If you changed the surface of the incline the car is rolling down, how might that impact the distance and speed the car travels?
Keith_Richards [23]

Explanation: As the angle is increased the acceleration of the object is increased as the angle increases the component of the force parallel to the incline increases and the component of forced perpendicular to the inclined decreases it is the parallel component of the weight vector that causes the acceleration.

6 0
3 years ago
An accelerating voltage of 2.47 x 10^3 V is applied to an electron gun, producing a beam of electrons originally traveling horiz
Dmitry [639]

Answer:

6.3445×10⁻¹⁶ m

Explanation:

E = Accelerating voltage = 2.47×10³ V

m = Mass of electron

Distance electron travels = 33.5 cm = 0.335 cm

E=\frac{mv^2}{2}\\\Rightarrow v=\sqrt{\frac{2E}{m}}\\\Rightarrow v=\sqrt{\frac{2\times 2470\times 1.6\times 10^{-19}}{9.11\times 10^{-31}}}\\\Rightarrow v=29455356.08671\ m/s

Deflection by Earth's Gravity

\Delta =\frac {gt^2}{2}

Now, Time = Distance/Velocity

\Delta =\frac {g\frac{s^2}{v^2}}{2}\\\Rightarrow \Delta =\frac{9.81\frac{0.335^2}{29455356.08671^2}}{2}\\\Rightarrow \Delta =6.3445\times 10^{-16}\ m

∴ Magnitude of the deflection on the screen caused by the Earth's gravitational field is 6.3445×10⁻¹⁶ m

3 0
3 years ago
Other questions:
  • What fraction of a meter is a millimeter ?
    9·2 answers
  • Two blocks of masses m1 and m2 are connected to each other on an Atwood machine (the blocks are connected by a string going over
    7·1 answer
  • 4. A student wants to determine what type of cereal his classmates like best. He buys 3 boxes of his most favorite puffed rice c
    12·1 answer
  • A change in the size or shape of a substance is a ___________ change. physical, chemical, or nuclear?
    5·1 answer
  • When you are watching TV, what is the main form of energy being used?
    7·1 answer
  • If an electrostatically charged object is placed near other objects what will occur
    9·1 answer
  • Question 1 of 25
    5·2 answers
  • Do heavier bowling balls go faster than lighter ones?
    11·2 answers
  • The rate at which VELOCITY changes over time is known as ________________________ 1pt
    8·1 answer
  • A model shows a machine that works using electric fields. What would this machine need for the electrical field to function prop
    9·1 answer
Add answer
Login
Not registered? Fast signup
Signup
Login Signup
Ask question!