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
QveST [7]
3 years ago
14

2 questions, brainliest if correct. please only answer if you really know!

Physics
2 answers:
natta225 [31]3 years ago
7 0

Answer:

[a] Friction is a force.

[c] An unbalanced force is necessary to cause a non-moving object to start moving.

Explanation:

Friction is a force that exerts oppositely from an objects motion, mostly by its surface. The smoothness and roughness of the surface depends on how much friction it has, friction is a type of force.

Unbalanced forces are what causes objects that aren't moving to move. For example, wind causes a kite to sway in the sky. Wind, in this situation, is the source of unbalance force.

Iteru [2.4K]3 years ago
3 0

Answer:

<h2>1. Friction is A. a force</h2>

<h2>2. An unbalanced force is B. When the object moves and accelerates</h2>
You might be interested in
Assume that the force exerted on each crutch by the ground is directed along the crutch, as the force vectors in the drawing ind
olya-2409 [2.1K]

Answer: 43 degrees

Explanation:

The force of the crutch can be broken into components.  The horizontal component of F is the static friction force keeping the crutch from sliding.  The vertical component is opposing the weight and is the Normal force.  Using the orientation of the angle q, we have the following

fs = Fx = F sin (angle (tita))

N = Fy = F cos (angle(tita))

Maximum angle implies maximum static friction

Therefore,

fsmax = UsN = Us x F cos(angle tita)

Where U = miyu

F sin(angle tita) = Us x Fcos (angle tita)

Sin (angle tita) / cos (angle tita) = Us

Therefore, tan (angle tita) = Us

Angle tita = tan^-1(Us) = tan^-1 (0.931) = 42.95 degrees = 43 degrees

There for Angle tita Max = 43 degrees

7 0
3 years ago
The plane of a5cm*8cm rectangular loop of wire is parallel to a 0.19T magnetic field the loop carries a current of 6.2 A. What t
Sedaia [141]

Answer:

Torque; τ = 4.712 × 10^(-3) J

Magnetic moment; M = 0.0248 J/T

Explanation:

Torque is gotten from the formula;

τ = BIA

Where;

B is magnetic field

I is current

A is area

We are given;

B = 0.19T

I = 6.2A

Rectangle dimensions = 5cm by 8cm = 0.05m by 0.08m

Thus;

Area; A = 0.05m × 0.08m = 0.004 m²

Thus;

τ = 0.19 × 6.2 × 0.004

τ = 4.712 × 10^(-3) J

Formula for the magnetic moment is given by;

M = IA

M = 6.2 × 0.004

M = 0.0248 J/T

5 0
3 years ago
The tropic of cancer is to the tropic of capricorn as the arctic circle is to the
Y_Kistochka [10]

Answer:

Antarctic Circle

Explanation:

The Tropic of Cancer, which is also referred to as the Northern Tropic, is the most northerly circle of latitude on Earth at which the Sun can be directly overhead. This occurs on the June solstice, when the Northern Hemisphere is tilted toward the Sun to its maximum extent.

Tropic of Capricorn Is it Southern Hemisphere counterpart, marking the most southerly position at which the Sun can be directly overhead.

7 0
3 years ago
What do we call the distance labeled from A to B and what could we do to the note played on an instrument to change that distanc
Korvikt [17]

Correct answer choice is :


A) From A to B is known as the wavelength and changing the pitch of the note will change its length.


Explanation:


The amount or quantity of period within two things, points, lines, etc. the state or fact of existing separate in space, as of one thing from another; remoteness. a linear amount of space: Seven miles is a distance too great to walk in an hour. Distance is a scalar quantity describing the interval in two points. It is just the measure of the interval.

7 0
3 years ago
Read 2 more answers
An 80kg parachutist jumps out of an airplane. Neglecting air friction, how fast will he be going after a 10 second free fall?
olganol [36]
If he is jumping you are adding force which means that you will be falling twice as fast
6 0
3 years ago
Other questions:
  • A rock with a mass of 25 kg has a weight of 40.8 n on the moon. what is the value of the acceleration of gravity (g) on the moon
    14·1 answer
  • Coherent light with wavelength 540 nm passes through narrow slits with a separation of 0.370 mm . At a distance from the slits w
    5·1 answer
  • Verify that for values of n less than 8, the system goes to a stable equilibrium, but as n passes 8, the equilibrium point becom
    5·1 answer
  • A roller coaster moves 200 ft horizontally, then rises 135 ft at an angle of 30.0° above the horizontal. Next, it travels 135 f
    13·1 answer
  • A rock falls from a tower that is 320 feet high. As it is​ falling, its height is given by the formula h equals 320 minus 16 t s
    15·1 answer
  • A two-turn circular wire loop of radius 0.63 m lies in a plane perpendicular to a uniform magnetic field of magnitude 0.219 T. I
    12·1 answer
  • What is the kinetic energy of the ball just before it hits the ground?
    10·1 answer
  • A device is turned on and 3.20 A flows through it 0.130 ms later. What is the self-inductance of the device (in mH) if an induce
    15·1 answer
  • When a permanent magnet picks up an iron nail, the nail also becomes a magnet. How does the magnetized nail differ from an elect
    11·1 answer
  • Which type of radioactive decay has a positive charge?
    9·1 answer
Add answer
Login
Not registered? Fast signup
Signup
Login Signup
Ask question!