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
Vladimir79 [104]
3 years ago
12

Please help.: Sliding from left to right in a straight line on a horizontal steel surface, an aluminum block weighing 20 newtons

is acted on by a 2.4 newton friction force. The block will be brought to rest by the friction force in a distance of 10 meters. Determine the magnitude of the acceleration of the block as it is brought to rest by the friction force. (Show all work)
Physics
2 answers:
Vlad [161]3 years ago
7 0
Mass of the block = 2/g = 2/9.8 =0.204 kg. 

Frictional force = mass * acceleration 

a = F/ m where F is the frictional force = 2.4 

a = 2.4/ 0.204 = 11.76 m/s^2 
-BARSIC- [3]3 years ago
7 0

Answer:

-1.176 m/s²

Explanation:

Given:

weight of aluminium block is w = 20.0 N

frictional force, f = 2.4 N

final velocity, v = 0

distance covered, d = 10 m

From Newton's second equation of motion,

F = ma

where, m is the mass and a is the acceleration.

mass of the block, m g = 20.0 N

m = 2.04 kg

The block is brought to rest by friction force:

f =- m a

⇒ 2.4 N = -(2.04 kg)(a)

⇒a = -1.176 m/s²

You might be interested in
What process is occurring during section "B" of the graph?
trasher [3.6K]
According to the graph the substance is absorbing heat but it's temperature is remaining steady at 100 degrees C. So we know that the substance is changing state. It is evaporating. And most likely the substance is water.
7 0
3 years ago
Read 2 more answers
A bicyclist steadily speeds up from rest to 11.0m/s during a 5.50s time interval. Determine all unknowns and answer the followin
Marina86 [1]

Explanation:

acceleration is 2 m/s^2

v-u/t

distance travelled is 30.25 meter

(v^2-u^2)/2a

11*11/2*2

121/4

30.25 m

5 0
3 years ago
The statement "for every action, there is an equal but opposite reaction" is a statement of____.
chubhunter [2.5K]
ANSWER: Isaac Newton
EXPLANATION: It is the 3rd law
3 0
3 years ago
Read 2 more answers
If the wavelength of a wave of light is 4.57x10^-9 m what is the frequency
alexandr402 [8]

Answer:

6.5646\times 10^{16}~ \text{Hz}

Explanation:

\text{Frequency,}~ f= \dfrac{c}{\lambda} = \dfrac{3\times 10^8 }{4.57 \times 10^{-9}} = 6.5646\times 10^{16}~ \text{Hz}

5 0
3 years ago
Inez uses hairspray on her hair each morning before going to school. The spray spreads out before reaching her hair partly becau
Tamiku [17]

Answer:

7.0\cdot 10^{-13}C

Explanation:

The magnitude of the electrostatic force between two charged objects is

F=k\frac{q_1 q_2}{r^2}

where

k is the Coulomb's constant

q1 and q2 are the two charges

r is the separation between the two charges

The force is attractive if the charges have opposite sign and repulsive if the charges have same sign.

In this problem, we have:

r=0.070 cm =7\cdot 10^{-4} m is the distance between the charges

q_1=q_2=q since the charges are identical

F=9.0\cdot 10^{-9}N is the force between the charges

Re-arranging the equation and solving for q, we find the charge on each drop:

F=\frac{kq^2}{r^2}\\q=\sqrt{\frac{Fr^2}{k}}=\sqrt{\frac{(9.0\cdot 10^{-9})(7\cdot 10^{-4})^2}{8.99\cdot 10^9}}=7.0\cdot 10^{-13}C

8 0
3 years ago
Other questions:
  • A particle is in uniform circular motion. Assume a standard rtz coordinate system. If you deconstruct the net force acting on th
    7·1 answer
  • A ray diagram is shown.
    7·2 answers
  • A chain saw produces a spherical sound wave having a frequency of 214Hz in air at 358C (308.2K or 958F). At a distance of 600mm
    14·1 answer
  • From your data, what factor(s) affect the speed of a wave? Explain your reasoning.
    14·1 answer
  • The magnitude of the centripetal force acting on an object traveling in a horizontal circular path will decrease and if the
    8·2 answers
  • Kepler’s 1st Law states that ________________________.
    15·2 answers
  • An 8.00 kg mass has a momentum of 42.0 Ns. What is the speed of the mass?
    12·1 answer
  • A boy pushes a rock up a hill in 20 seconds. If he applied a force of 20 N over a distance of 5 m on the rock, calculate the pow
    15·1 answer
  • What will be the magnitude of the force of a satellite of mass 1000kg if the orbit were not close to the surface of the Earth bu
    15·1 answer
  • Which defines potential energy?
    11·1 answer
Add answer
Login
Not registered? Fast signup
Signup
Login Signup
Ask question!