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
Tpy6a [65]
4 years ago
9

A large block is being pushed against a smaller block such that the smaller block remains elevated while being pushed. The mass

of the smaller block is m = 0.45 kg. It is found through repeated experimentation that the blocks need to have a minimum acceleration of a = 13 m / s 2 in order for the smaller block to remain elevated and not slide down. What is the coefficient of static friction between the two blocks?

Physics
1 answer:
harkovskaia [24]4 years ago
4 0

Explanation:

According to the free body diagram a block of mass m will have expression for force as follows.

                  N = ma

and,       f_{c} - mg = 0  

             \mu_{s}N - mg = 0

       \mu_{s} = \frac{mg}{N} = \frac{mg}{ma}

                  = \frac{g}{a}

                  = \frac{9.8}{13}

                  = 0.75

Therefore, we can conclude that the value of coefficient of static friction between the two blocks is 0.75.

You might be interested in
What does an alpha particle consist of?
Tamiku [17]
An alpha particle is like a Helium atom. And Helium has an atomic number of 2 and mass number or 4.

Mass Number =4,
Atomic Number = 2, for a Neutral Atom, Atomic Number = Number of Proton = 2

Mass Number = Proton + Neutron.

4 = 2 + Neutron

Neutron = 4 -2 = 2

Hence alpha particle has 2 Protons and 2 Neutrons. Option C.
7 0
3 years ago
What is the relationship between SI units and CGS unit of work ?
VashaNatasha [74]
Work SI unit = joule = N*m= [kg]*[m/s^2] *[m] = kg * m^2/s^2

Work cgs unit = erg =  [g][cm/s^2][cm] = g*cm^2 / s^2

Then 1 kg * m^2 / s^2 * [1000 g/kg] * [100cm/m]^2 = 10,000,000 g*cm^2/s^2

The relation is 1 joule = 10,000,000 erg or 1 erg = 10^-7 joule
8 0
4 years ago
George walks to a friend's house. He walks 750 meters North, then realizes he walked
Sauron [17]

Answer:

I think you are looking for the velocity, so the answer is 38.5 m/s

Explanation:

Velocity is giving by displacement/time. North will be positive and South will be negative, George travels 750 meters then travels -250 meters his displacement is then 750 - 250 or 500 meters. Divide that by 13 seconds to get 38.5 m/s.

4 0
3 years ago
Which compound has the highest boiling point? Explain your reasoning. CH4 or CH3CH3
kogti [31]

The bigger molecule has more interactions and hence the higher b.p. CH3CH2OCH2CH3 is a bigger molecule than CH4 and CH3CH3, so has more dispersion forces. It also has dipole-dipole forces due to the polarised C-O bonds. CH3OH and CH3CH2OH have hydrogen bonds due to the very electronegative O atom bonded to the H atom

God bless

4 0
3 years ago
Read 2 more answers
A formula for the normal systolic blood pressure for a man age a , measured in mmhg, is given as p=0. 006a2−0. 02a 120. Find the
djyliett [7]

The age of a man whose normal blood pressure measures 123 mm of hg

9 years

<h3>What is Quadratic equation ?</h3>

A quadratic equation as an equation of degree 2, meaning that the highest exponent of this function is 2. The standard form of a quadratic equation is y = ax^{2} + bx + c, where a, b, and c are numbers and a cannot be 0

P(A) = 0.006 a^{2} - 0.02a + 120

123 = 0.006- 0.02a + 120

0=0.006 a^{2} - 0.02a - 3

you can use the quadratic equation  formula to solve for the man's age.

A = (-b ± (\sqrt{b^{2} - 4*a*c})  ) / (2a)

A = (0.02 ±  \sqrt{(-0.02)^{2} - 4*0.006*(-3)}/ (2*0.006)

A = (0.02 ± \sqrt{0.0076}) / 0.012

A = 9 , -5.67

Age of the man will be 9 years

To learn more about quadratic equation  here

brainly.com/question/17177510?referrer=searchResults

#SPJ4

5 0
2 years ago
Other questions:
  • -Tabitha measured the airplane's______
    8·1 answer
  • A light, inextensible cord passes over a light, frictionless pulley with a radius of 15 cm. It has a(n) 12 kg mass on the left a
    11·1 answer
  • Find the angle in degrees for the third-order maximum for 577 nm wavelength yellow light falling on a diffraction grating having
    12·1 answer
  • A metal surface is illuminated by light of wavelength 310 nm. If the work function of the metal is 2.46 eV, what is the maximum
    9·1 answer
  • La columna de aire en el interior de un clarinete fibra de tal manera que se forma ondas estacionarias con un nodo en un extremo
    12·1 answer
  • Which criteria do scientists consider when they classify soil? Check all that apply
    8·2 answers
  • A 25-kg weight is submerged in a tank attached to a spring, and the spring is compressed 0.1m with a final force of 1000N and re
    15·1 answer
  • Elapsed Time
    8·1 answer
  • What causes a ball rolling across the floor to slow down low of motion​
    15·1 answer
  • Consider a rotating object. On that object, select a single point that rotates. How does the angular velocity vector of that poi
    11·1 answer
Add answer
Login
Not registered? Fast signup
Signup
Login Signup
Ask question!