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
Nikitich [7]
3 years ago
5

I need help and I don't understand if you can help me but let it be before 6:00

Physics
1 answer:
viva [34]3 years ago
3 0

Answer:

balanced: a train moving at a constant speed, the moon orbiting the earth at a constant speed, a lamp sitting on a desk, an apple hanging on a tree

unbalanced: a skier coming down a mountain, a car accelerating from the start line, a soccer ball after it was kicked, a parachuter falling to ground

Explanation:

all the balanced ones are either moving at a constant speed or are skill

all the unbalanced ones were disturbed by some sort of force causing them to accelerate, go faster, blah blah blah

You might be interested in
What church church actions angered reformers and led to the reformation
Leya [2.2K]
 catholic I did this a while back but wyd you mark it physics


5 0
3 years ago
Jean- Baptiste Say argued that entrepreneurs should be called the fourth factor of production because they
Luda [366]
The correct answer is A) entrepreneurs organize the other factors, which are land, labor, and capital. The basic premise is that having land, labor, and capital, without someone pushing to develop a new product or service out of it, does not result in production per se.
6 0
3 years ago
13. Litmus paper can be used to determine if a solution is an acid or a base. There are two types of
Over [174]

Answer:

The main use of litmus is to test whether a solution is acidic or basic. Light Blue litmus paper turns red under acidic conditions and red litmus paper turns blue under basic or alkaline conditions, with the color change occurring over the pH range 4.5–8.3 at 25 °C (77 °F). Neutral litmus paper is purple.

Explanation:

7 0
3 years ago
Consult Multiple-Concept Example 9 to explore a model for solving this problem. A person pushes on a 63-kg refrigerator with a h
miskamm [114]

Answer:

 a ) 270 N

b )413.65 N

Explanation:

weight of the refrigerator = reaction force ( R )

= mg

= 63 x 9.8

R = 617.4 N

Maximum friction possible

= coefficient of friction x R

= .67 X 617.4

= 413.65 N

When force 270 N is applied , due to friction,  the body does not move .

The friction force adjusts itself to the external applied force to prevent the body to budge.

Hence the friction force acting in this situation = 270 N

b ) The maximum friction possible is 413.65 . If we apply a force equal to or exceeding 413.65 N , body will move. Hence 413.65 N is the answer.

4 0
3 years ago
Tarzan plans to cross a gorge by swinging in an arc from a hanging vine. If his arms are capable of exerting a force of 1420 N o
olga_2 [115]

Answer:

Angular velocity:

w=1.2/s

Linear velocity:

v=6.24m/s

Explanation:

When he swings he es ina a circular movement with radius 5.2m. To maintain this circular movement at any time there must be total force on Tarzan equal to the centripetal force:

F_{cent}=m*r*w^{2}

where m is his mass, r the radius and w the angular velocity. At the lowest point on Tarzan there are two forces acting, gravity and the rope tension, this rope tension equals the force on Tarzan arms:

F_{tot}=T-W

Where T is the tension on his arms, and W the weigth calculated as:

W=m*g

Where g is the acceleration of gravity. replacing this and remembering that the total force must equal the centripetal force:

F_{tot}=T-m*g

F_{cent}=m*r*w^{2}=T-m*g

Solving for w:

w=\sqrt{\frac{T/m-g}{r}}=\sqrt{\frac{1420N/81.9kg-9.8m/s^{2}}{5.2m}}=1.2/s

To get the linear velocity at this point:

v=w*r=1.2/s*5.2m=6.24m/s

6 0
3 years ago
Other questions:
  • A bullet can travel at a speed of over 1000 m/s. When a bullet is fired from a rifle, the actual firing makes a distinctive soun
    9·1 answer
  • How can you determine the number of valence electrons in atom without drawing a Bohr model?
    7·2 answers
  • An early method of measuring the speed of light makes use of a rotating slotted wheel. A beam of light passes through one of the
    8·1 answer
  • Why life is often referred to as carbon based
    15·1 answer
  • which two objects have stored energy A)a ball rolling on the ground B) a small rock sitting on top of a big rock C)a stretched r
    14·2 answers
  • lightning and thunder both occur at the same time why do you see the Lightning before you hear the thunder
    14·2 answers
  • SO2 +<br> LizSe →<br> SSеz +<br> Li2O<br> balance the equation
    6·1 answer
  • Which competition is the “ most important soccer competition in the world “ ?
    8·1 answer
  • A car of mass 1200kg moving 90km/hr is brought to rest over a distance of 20m. calculate breaking force.​
    7·1 answer
  • In lecture, it was discussed measurements of mass, temperature, time, volume and length. which of these is not an si base unit (
    11·1 answer
Add answer
Login
Not registered? Fast signup
Signup
Login Signup
Ask question!