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
zalisa [80]
3 years ago
10

Please help!!!!!!!!!!

Physics
1 answer:
Alex3 years ago
4 0

Answer:

C

Explanation:

three bricks means 3 times the weight, so 6/3=2

You might be interested in
What phase difference between two otherwise identical harmonic waves, moving in the same direction along a stretched string, wil
lora16 [44]

Answer:

\theta=145

Explanation:

The amplitude of he combined wave is:

B=2Acos(\theta/2)\\

A, is the amplitude from the identical harmonic waves

B, is the amplitude of the resultant wave

θ, is the phase, between the waves

The amplitude of the combined wave must be 0.6A:

0.6A=2Acos(\theta/2)\\ cos(\theta/2)=0.3\\\theta/2=72.5\\\theta=145

5 0
3 years ago
When a parachutist jumps from an airplane, he eventually reaches a constant speed, called the terminal speed. Once he has reache
Masteriza [31]

Answer:

b) True.    the force of air drag on him is equal to his weight.

Explanation:

Let us propose the solution of the problem in order to analyze the given statements.

The problem must be solved with Newton's second law.

When he jumps off the plane

     fr - w = ma

Where the friction force has some form of type.

     fr = G v + H v²

Let's replace

     (G v + H v²) - mg = m dv / dt

We can see that the friction force increases as the speed increases

At the equilibrium point

      fr - w = 0

      fr = mg

      (G v + H v2) = mg

For low speeds the quadratic depended is not important, so we can reduce the equation to

     G v = mg

     v = mg / G

This is the terminal speed.

Now let's analyze the claims

a) False is g between the friction force constant

b) True.

c) False. It is equal to the weight

d) False. In the terminal speed the acceleration is zero

e) False. The friction force is equal to the weight

3 0
3 years ago
How long will it take the officer to catch the thief?
jenyasd209 [6]

Answer:

can take a lot of time

Time is money

Explanation:

3 0
4 years ago
A 0.43 kg hammer is moving horizontally at 5.2 m/s when it strikes a nail and comes to rest after driving the nail 0.014 m into
vagabundo [1.1K]

Answer:

The duration of the impact is 0.005384 seconds

Explanation:

Given

m = 0.43 kg

v = 5.2 m/s

x = 0.014 m

Knowing the formulas

v^{2}_{f} = v^{2}_{i} + 2ax\\0 = 5.2^{2}  + 2a*0.014\\a = - 965.71 m/s^{2} \\\\vf = vi + at\\0 = 5.2 + (965.71)t\\t = 0.005384 s

5 0
3 years ago
Read 2 more answers
Ow do quantum numbers relate to electrons?
strojnjashka [21]
They enable us to dig deeper into the electron configurations by making us focus on electrons' quantum nature
3 0
3 years ago
Other questions:
  • A beam of red and blue light in air is incident at 30º on a glass surface. Which is true?
    10·1 answer
  • Which change will cause an increase in the electric current produced through electromagnetic induction?using more wire loops in
    5·2 answers
  • A string is attached to a vibrating machine that has a frequency of 120 Hz. The other end of the string is passed over a pulley
    6·1 answer
  • What is the direction of the current flowing through the wire—left or right? The current flows to the .
    13·2 answers
  • What is the relation between energy and amplitude of a light wave, if amplitudes a factor in energy?
    5·1 answer
  • Number of electrons in Na
    14·2 answers
  • If a truck weighs 18,000 N and it’s tires are inflated to a pressure of 190 kPa how large is the area of the trucks tires that a
    6·1 answer
  • The slope of the line on a speed-time graph tells the speed.
    10·1 answer
  • Which of the following terms describes one’s ability to understand how another person is feeling?
    9·1 answer
  • Mike stands on a scale in an elevator. If the elevator is accelerating upwards with 4.9 m/s2, the scale reading is ____ times Mi
    5·1 answer
Add answer
Login
Not registered? Fast signup
Signup
Login Signup
Ask question!