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
astra-53 [7]
3 years ago
7

A 4.0 kg block is resting on a rough horizontal table. The coefficient of static friction us is 0.60. The static friction betwee

n the block and the table before any attempted motion is to start is N. (round to the nearest integer)
Physics
1 answer:
professor190 [17]3 years ago
6 0

Answer: 24 N

Explanation:

Given that the

Mass m = 4 kg

Coefficient of friction (μ) = 0.60

To calculate the static friction between the block and the table before any attempted motion, you will use the formula; F = (μ)N

Where

F = static friction

N = normal reaction = mg

g = acceleration due to gravity = 9.8 m/^2

Substitutes m, g and (μ) into the formula

F = 0.6 × 4 × 9.8

F = 23.52 N

Therefore, the static friction between the block and the table before any attempted motion is 24 N approximately.

You might be interested in
Which statement accurately describes CI2?
atroni [7]
1. 100,000% A. I simply googled C12 and it's the most stable Isotope of Carbon... 

2. A as well.. 99% sure.. and so far my 99% sure has been 100% correct so ... :p
8 0
3 years ago
Read 2 more answers
The table provided shows data collected during an experiment:
inn [45]

Answer: (A) Gravitational force are proportional to the masses of the two objects.

Explanation:

6 0
3 years ago
Read 2 more answers
A radio signal takes 1.28 s to travel from a transmitter on the Moon to the surface of Earth. The radio waves travel at 3.00108
yulyashka [42]

Answer:

s = 3.84 x 10⁸ m

Explanation:

The distance traveled by an object, while in uniform motion, is given by the following equation:

s = vt

where,

s = distance covered

v = speed

t = time interval

In this case:

s = distance between Moon and Earth = ?

v = speed of radio waves = 3 x 10⁸ m/s

t = time taken to travel = 1.28 s

Therefore,

s = (3 x 10⁸ m/s)(1.28 s)

<u>s = 3.84 x 10⁸ m</u>

3 0
4 years ago
Carry's car has a mass of 1000 kg and its brakes can apply 8000 N of force. If she is driving at 24 m/s and sees something in th
-Dominant- [34]

3s

Explanation:

Given parameters:

Mass of car = 1000kg

Force applied = 8000N

speed = 24m/s

Unknown:

time taken for the car to stop = ?

Solution:

According to newton's second law of motion; "the force on a body is the product of its mass and acceleration".

  Force = mass x acceleration

  let us find the acceleration of the car;

     a = \frac{F}{M}  = \frac{8000}{1000}  = 8m/s²

since the car is accelerating at a rate of  8m/s², when the brakes are applied, it will start decelerating at the constant rate, - 8m/s²

Applying the appropriate equation of motion;

     V = U + at

V is the final velocity

U is the initial velocity

a is the acceleration

t is the time taken

        final velocity = 0

       0 = U + at

     -U = at

    -24 = -8t

         t = 3s

learn more:

Newton's laws brainly.com/question/11411375

#learnwithBrainly

8 0
4 years ago
If you drop an object from rest, the distance it falls is given by (1/2)at2, where a is the acceleration of the object and t is
klio [65]

If,

d \:  =  \:   \frac{1}{2} a {t}^{2}

then, with 3x time t, (suppose, new distance is h)

h \:  =  \:   \frac{1}{2} a {(3t)}^{2}

=  \frac{1}{2} a9 {t}^{2}

= 9 \:  \frac{1}{2} a{t}^{2}

= 9d

Therefore, new distance h will be 9 times bigger than distance d.

answer: c

7 0
3 years ago
Other questions:
  • HELP ASAP PLEASE!!!
    5·2 answers
  • A boat on a river travels downstream between 2 points 20 miles apart in 1 hour. It makes its return trip against the current and
    15·1 answer
  • Of the following transitions in the Bohr hydrogen atom, the ________ transition results in the absorption of the highest-energy
    8·1 answer
  • Exercise has no positive effects on the nervous system
    6·2 answers
  • What happens to a wave when reflected off a node
    7·1 answer
  • Rocks that are formed as a result of deposits from weathering and erosion
    14·1 answer
  • Please Help ASAP I Need Help with question 5 I got the answer wrong this is my second and final attempt for the unit test
    8·2 answers
  • An example of inertia is when your body flies forward when you slam on the breaks.
    7·2 answers
  • The development and use of alternative energy source is very necessary in present day world. Explain this statement.​
    8·1 answer
  • What is the best example of potential energy?water flowing in a rivera puddle of water on the floora block of frozen ice on the
    6·1 answer
Add answer
Login
Not registered? Fast signup
Signup
Login Signup
Ask question!