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
Elanso [62]
2 years ago
9

What is force? And tell it's unit

Physics
2 answers:
IRINA_888 [86]2 years ago
3 0

Answer:

force is simply a push or a pull in a particular direction. The unit is N (newton)

Explanation:

hope this helped

Rus_ich [418]2 years ago
3 0

Answer:

In physics force is an influence which changes the motion of an object which has mass

Its unit is N or kgms/2

You might be interested in
A child on a playground swings through a total of 32 degrees. If the displacement is equal on each side of the equilibrium posit
Black_prince [1.1K]

Answer: A = y/cos32

That is the amplitude A in terms of the displacement y.

Explanation: Since the displacement in the question In the question is the same in both direction, it is a Simple Harmonic Motion problem. In s.h.m the amplitude of displacement A is related to the displacement itself y by this simple equation

y = A* cos(theta)

So, A = y/cos(theta)

A = y/cos32.

If the magnitude of the displacement y is given, you just substitute in.

4 0
3 years ago
the coefficient of kinetic friction between a couch and the floor is 0.65. if the couch has a mass of 42 kg and you push it with
Anna [14]

Explanation:

The net force along the horizontal direction is

\sum{F_x} = F_{applied} - f

where f is the frictional force. We can find the frictional force by looking at the vertical forces acting on the couch:

\sum{F_y} = N - mg = 0 \Rightarrow N = mg

From the definition of frictional force,

f = \mu{N} = \mu{mg} = (0.65)(42\:\text{kg})(9.8\:\text{m/s}^2)

\:\:\:\:= 267.5\:\text{N}

Therefore, the net force on the couch is

\sum{F_x} = 600\:\text{N} - 267.5\:\text{kN} = 332.5\:\text{N}

4 0
2 years ago
A 2.0 kg wood block is launched up a wooden ramp that is inclined at a 30˚ angle. The block’s initial speed is 10 m/s. What vert
WARRIOR [948]

Answer:

The wood block reaches a height of 4.249 meters above its starting point.

Explanation:

The block represents a non-conservative system, since friction between wood block and the ramp is dissipating energy. The final height that block can reach is determined by Principle of Energy Conservation and Work-Energy Theorem. Let suppose that initial height has a value of zero and please notice that maximum height reached by the block is when its speed is zero.

\frac{1}{2}\cdot m \cdot v^{2} = m \cdot g\cdot h + \mu_{k}\cdot m\cdot g\cdot s \cdot \sin \theta

\frac{1}{2}\cdot v^{2} = g\cdot h + \mu_{k}\cdot g\cdot \left(\frac{h}{\sin \theta} \right)\cdot \sin \theta

\frac{1}{2}\cdot v^{2} = g\cdot h +\mu_{k}\cdot g\cdot h

\frac{1}{2}\cdot v^{2} = (1 +\mu_{k})\cdot g\cdot h

h = \frac{v^{2}}{2\cdot (1 + \mu_{k})\cdot g} (1)

Where:

h - Maximum height of the wood block, in meters.

v - Initial speed of the block, in meters per second.

\mu_{k} - Kinetic coefficient of friction, no unit.

g - Gravitational acceleration, in meters per square second.

m - Mass, in kilograms.

s - Distance travelled by the wood block along the wooden ramp, in meters.

\theta - Inclination of the wooden ramp, in sexagesimal degrees.

If we know that v = 10\,\frac{m}{s}, \mu_{k} = 0.20 and g = 9.807\,\frac{m}{s^{2}}, then the height reached by the block above its starting point is:

h = \frac{\left(10\,\frac{m}{s} \right)^{2}}{2\cdot (1+0.20)\cdot \left(9.807\,\frac{m}{s^{2}} \right)}

h = 4.249\,m

The wood block reaches a height of 4.249 meters above its starting point.

5 0
3 years ago
Which formula is used to calculate average velocity?
Flauer [41]

Answer:

Explanation:

<h3>for average velocity we use this formula                                                                                           V                                   Vavg =V1+V2<u><em>÷</em></u><u>2</u></h3>
5 0
3 years ago
If the graph represents speed, what is measured on the x and y axes? You need to specifically identify which axis is which.
Harrizon [31]
X axis - time
Y - distance
4 0
2 years ago
Other questions:
  • Two countries that go through Tropic of Cancer
    5·2 answers
  • A wave with a period of three seconds travels at a speed of 12 m/s what is the wavelength of the wave
    8·1 answer
  • How to find displacement with velocity and time?
    11·1 answer
  • How can Newton's third law describe the forces affecting a rocket as it
    5·2 answers
  • How do you know that waves sent from the sun to earth are not mechanical waves? Explain
    13·1 answer
  • . What type of stress is tension and at what type of plate boundary is it found?
    12·2 answers
  • Which state of matter has a define shape and definite volume
    5·2 answers
  • A cuboid has sides that are 0.2m, 0.4m and 0.7m. The mass of the cuboid is 0.5kg. Calculate the density.
    6·1 answer
  • Three people push a piano on wheels with forces of 130 N to the right, 150 N to the left, and 165 N to the right. What is the st
    10·1 answer
  • The rod connected halfway along the 0.660 m radius of a wheel exerts a 2.27 × 10^5 N force. How large is the maximum torque?
    8·1 answer
Add answer
Login
Not registered? Fast signup
Signup
Login Signup
Ask question!