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
Simora [160]
3 years ago
12

A block of mass 12.2 kg is sliding at an initial velocity of 3.9 m/s in the positive x-direction. The surface has a coefficient

of kinetic friction of 0.173. (indicate the direction with signs of your answer) (a) What is the force of kinetic friction in N acting on the block? (b) What is the block's acceleration in /s^2? (c) How Far will it slide (in m) before coming to rest? Plz answer as soon as possible
Physics
1 answer:
Studentka2010 [4]3 years ago
5 0

Answer:

Explanation:

a) Force of friction = μ R where μ is coefficient of kinetic friction and R is reaction force

R = mg where m is mass of the block

Force of friction F = μ x mg

= .173 x 12.2 x 9.8

= 20.68 N

b ) Only force of friction is acting on the body so

deceleration = force / mass = 20.68 / 12.2 = 1.7 m /s²

acceleration = - 1.7 m /s²

c )

v² = u² - 2 a s

v = 0 , u = 3.9 m /s

a = 1.7 m /s

0 = 3.9² - 2 x 1.7 x s

s = 4.47  m

You might be interested in
If an object has a mass of 25 grams and a volume of 5 mL, then what is the density of the object?
vazorg [7]

Answer:

5

Explanation:

density = mass/volume

density = 25g /5 mL

density = 5

6 0
3 years ago
The second hand on a clock is 3.00 cm long. What is the speed of the outermost tip of that second hand
Gnom [1K]

In 60 minutes or 3600 seconds, the tip of the minute hand traverses the circumference of a circle with radius 3.00 cm, so it moves with a tangential speed of

(3.00 cm)/(3600 s) ≈ 0.00083 cm/s = 8.3 μm/s

4 0
3 years ago
A gas has four moles under a pressure of 5.4 atm has a volume of 120 L. What is the
Sunny_sXe [5.5K]

Answer:

1973. K

Explanation:

PV=nRT

(5.4)(120)=(4)(0.0821)T

648=(0.3284)T

1973. = T

Using the ideal gas equation, T is measured in Kelvin.

Or, you could isolate T:

T = PV/nR

The answer is the same.

3 0
3 years ago
The average surface temperature of Mars is estimated to be -55°C. What is this temperature on the Fahrenheit scale? -99°F -63°F
Mamont248 [21]
-55 C to F is -67.

I hope this helps you!

Brainliest answer is always appreciated!
4 0
3 years ago
What produces the magnetic field of an electromagnet?
andrew11 [14]

An electromagnet is a magnet whose magnetic field is created when electricity is flowing.

<h2>What is an electromagnet?</h2>

A device consisting of an iron or steel core that is magnetized by electric current in a coil that surrounds it.

<h2>What is magnetic field?</h2>

Magnetic force is defined as the space surrounding a magnet in which magnetic force is exerted.

<h2>What is electricity?</h2>

A form of energy created by charged or moving <em>electrons</em> or <em>protons</em>.

<h2>What does it mean when electricity is flowing?</h2>

The movement of energy is called a flow. The flow of electricity through a wire can be thought of as being similar to the flow of water through a pipe. Electricity usually flows in specially protected wires, but it can also move around using many other objects.

<h2>How does a magnetic field and the flow of electricity relate?</h2>

The electromagnetic force produces two related phenomena: electricity and magnetism. They combine to generate electromagnetism. A magnetic field is created by a moving electric charge. Electric charge movement is induced by a magnetic field, resulting in an electric current.

<h2>What produces a magnetic field? </h2>

Electric charges in motion. Charged particles in motion have both an electric field and magnetic field associated with them.

<h2>How does an electromagnet work?</h2>

An electric current flows through a coil of wire. This produces a magnetic field in the wire. The sides of the coil that carry current at 90 degrees to the magnetic field experience a force as they interact with the magnetic field.

4 0
2 years ago
Other questions:
  • A ______is any push or pull in a direction
    10·1 answer
  • What will a spring scale read for the weight of a 75.0-kg woman in an elevator that moves upward with constant speed of 5.8 m/s
    7·1 answer
  • If an object's kinetic energy is zero, what is its momentum?
    13·1 answer
  • What is 2.5 × 104 × 3 × 102?
    8·1 answer
  • In a complete description of a force vector, which is usually not necessary?
    12·1 answer
  • Energy is the ability to do.
    5·2 answers
  • You are driving on the highway at a speed of 40 m/s (which is over the speed limit) when you notice a cop in front of you. To av
    6·1 answer
  • A cannon sitting on level ground is aimed at 45.0 degrees relative to the horizontal. It fires a test shot at a target located 1
    12·1 answer
  • In space, there is no friction. Without the force of friction, satellites and other moving objects will continue moving at the s
    11·1 answer
  • Liquids take the shape of the bottom of their container, while gases take the shape of their entire container. The shape solids
    5·1 answer
Add answer
Login
Not registered? Fast signup
Signup
Login Signup
Ask question!