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
pochemuha
2 years ago
11

I need help PLEASE HEEEEEEEEELPP

Physics
1 answer:
lana66690 [7]2 years ago
6 0

Answer:

a = (v2 - v1) / t

From A to B    (8 - 4) m/s / 1 s = 4 m / s^2

From A to D    ( 7 - 4) m/s / 5 s = .6 m / s^2

Note these equations hold for "uniform" values

They say nothing about the acceleration at intermediate points - the equation just says that his average speed increased from 4 m/s to 7 m/s during a 5 sec period

You might be interested in
Which is happening when humans control the breeding of living things to favor certain desired features?
77julia77 [94]
Selective breeding. That is, breeding which uses extreme selectivity
5 0
2 years ago
w strong are you? Could you turn a moving car with just your own strength? No way! If a normal driver inputs about 50 N of force
malfutka [58]

The mechanical advantage of a simple machine is the measure of its amplified force gain.

The mechanical advantage  is defined as the force amplified by a machine to the force required to generate such output.

Mathematically\ mechanical\ advantage\ MA=\frac{F_{o}} {F_{i}}

F_{o} \ and\ F_{i} are the amplified force and applied force. We may also consider them as output and input force.          


In the given question, the force given to the steering wheel is 50 N.

The output force produced by the steering wheel is 3750 N.

Hence the mechanical advantage will be-

                               MA=\frac{F_{o}} {F_{i}}

                                       =\frac{3750\ N}{50\ N}

                                       =75      [ans]

3 0
2 years ago
A tuning fork generates sound waves with a frequency of 240 Hz. The waves travel in opposite directions along a hallway, are ref
Bingel [31]

Answer:

The phase difference between the reflected waves when they meet at the tuning fork is 159.29 rad.

Explanation:

Given that,

Frequency of sound wave = 240 Hz

Distance = 46.0 m

Distance of fork = 14 .0 m

We need to calculate the path difference

Using formula of path difference

\Delta x=2(L_{2}-L_{1})

Put the value into the formula

\Delta x =2((46.0-14.0)-14.0)

\Delta x=36\ m

We need to calculate the wavelength

Using formula of wavelength

\lambda=\dfrac{v}{f}

Put the value into the formula

\lambda=\dfrac{343}{240}

\lambda=1.42\ m

We need to calculate the phase difference

Using formula of the phase difference

\phi=\dfrac{2\pi}{\lambda}\times \delta x

Put the value into the formula

\phi=\dfrac{2\pi}{1.42}\times36

\phi=159.29\ rad

\phi\approx 68.2^{\circ}

Hence, The phase difference between the reflected waves when they meet at the tuning fork is 159.29 rad.

7 0
3 years ago
To meet the minimum required instrument flight experience to act as a pilot in command of an aircraft under IFR, you must have l
lora16 [44]
I think its a tbh bc it seems to be the best answer out of a b c and d
6 0
3 years ago
Which product of nuclear decay has mass but no charge?
Tom [10]
Neutrons have a zero charge but consist of mass.
3 0
2 years ago
Other questions:
  • At what temperature will silver have a resistivity that is two times the resistivity of iron at room temperature? (Assume room t
    14·1 answer
  • A substance that is made up of only one kind of atom is an?
    14·2 answers
  • PLLLLLLLLLLZ HELP The virtual image of a lens is always on the same side of the lens as the object.
    6·1 answer
  • Q3. What is the minim value of refractive index?
    14·2 answers
  • Is there change in the force of gravity between two objects when their masses are doubled and the distance between them is also
    13·1 answer
  • What are the two <br>factors in which weight of object depends?​
    9·2 answers
  • Does the length of a persons hair affect the power of static electricity
    15·2 answers
  • Please tell me if if these statements are true or false
    5·2 answers
  • 1. Quais motivos fazem com que o Croquet Golf seja a variação da
    10·1 answer
  • You cover the following displacements every day going to school: d1=50 m, E and d2=95 m, N. You do this for 12 minutes. a) What
    11·1 answer
Add answer
Login
Not registered? Fast signup
Signup
Login Signup
Ask question!