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
Marianna [84]
2 years ago
12

This is a two part question: What is the force of friction acting on a 100 kg steel slab at rest on a steel floor?

Physics
1 answer:
Crazy boy [7]2 years ago
7 0
1) 0N... friction opposes the motion of an object, since the block is at rest there is no motion thus no friction

2) F=ma
= (5.5kg)(30m/s)
=165 N
You might be interested in
What is the thickness of the Lithosphere
Salsk061 [2.6K]

Answer: about 100 km[kilometers] thick

Explanation:

7 0
3 years ago
Read 2 more answers
Power is measured in unit of Joules per second or
Rasek [7]
D watts yw .yea yww
5 0
3 years ago
You are standing 2.5m directly in front of one of the two loudspeakers. They are 3.0m apart and both are playing a 686Hz tone in
ahrayia [7]

Answer:

distance from speaker is 17.87 m

Explanation:

given data

distance from loudspeaker = 2.5 m

distance between loudspeaker = 3.0 m

room temperature = 20c

wavelength f  = 686Hz

to find out

what distances from the speaker

solution

we know sound velocity c = 331.5  + 0.6 × 20c = 343.5

so wavelength of sound  λ = c / f  

wavelength = 343.5 /  686 = 0.5 m

when the difference in distance of speaker destructive interference will be

d = λ/2 × (2n-1)

for n = 1, 2 3 4 ..

d = 0.5/2 × (2n-1)

d = 0.250 , 0.75 , 1.25 , 1.750............   for n = 1, 2 3 .............

so

for d = 0.250

side of triangle by hypotenuse of triangle are

\sqrt{3^{2}+(2..5+x)^{2} } - (2.5 + x1) = 0.250

0.5 x1 = 7.6875

x1 = 15.375 m

for d = 0.75

side of triangle by hypotenuse of triangle are

\sqrt{3^{2}+(2..5+x)^{2} } - (2.5 + x2) = 0.75

1.5 x2 = 4.6875

x2 = 3.125 m

for d = 1.250

side of triangle by hypotenuse of triangle are

\sqrt{3^{2}+(2..5+x)^{2} } - (2.5 + x3) = 1.250

2.5 x2 = 1.1875

x3 = 0.475 m

for d = 1.750

x4 will be negative so we stop here

so the distance from speaker here is given below

distance = 2.5 + x

here x = 0.475 , 3.125 and 15.375 so

distance 1 = 2.5 + 0.475  = 2.975 m

distance 2 = 2.5 + 3.125  = 5.625 m

distance 3 = 2.5 + 15.375 = 17.875 m

final distance from speaker is 17.87 m

8 0
3 years ago
How is the acceleration of an object in uniform circular motion constant?
nevsk [136]
In both magnitude and direction since acceleration is a vector quantity
5 0
3 years ago
Read 2 more answers
What is the angle of reflection?
Lyrx [107]
<span>The angle of reflection is C). the angle that the reflected ray makes with a line drawn perpendicular to the reflecting surface, that way the reflection can be seen.

Hope I have helped, mark as Brainliest, and have a good day!!!</span>
8 0
3 years ago
Read 2 more answers
Other questions:
  • Islands in the middle of the oceans (for example, Great Britain, Hawaii, Bermuda) tend to have more stable climates with smaller
    7·1 answer
  • A wave has a wavelength of 10mm and a frequency of 5 hz what is the speed?
    10·2 answers
  • Every substance has a specific value of heat required to change the temperature of 1 gram of the substance by 1 degree Celsius.
    6·1 answer
  • What is the experimental group(s)?
    8·1 answer
  • (1) A net force of 265 N accelerates a bike and rider at 2.30 m/s. What is the mass of the
    7·1 answer
  • A ball is projected vertically downward at a speed of 4.00 m/s. How far does the bal travel in 1.80 s? What is the velocity of t
    10·1 answer
  • When the bells are charged up, the left bell acquires a positive charge, the right bell a negative charge. When this occurs, the
    15·1 answer
  • 135g of an unknown substance gains 9133 J of heat as it is heated from 25⁰C to 100⁰C. Using the chart below, determine the ident
    13·1 answer
  • The force exerted by gravity on 5kg=~ n
    13·1 answer
  • You are sharing a house with a few roommates. One of them plays on the basketball team, and is exactly 200 cm tall. The heights
    7·1 answer
Add answer
Login
Not registered? Fast signup
Signup
Login Signup
Ask question!