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
Luba_88 [7]
1 year ago
7

Give an example of a force applied to an object that does not change the object's velocity. Why does the object's velocity not c

hange
Physics
1 answer:
Xelga [282]1 year ago
8 0

Answer:

A chair at rest on the floor has two forces acting on it its own weight that pulls it downward and the floor pushing upward on the chair, both of these forces are acting on it but the net force is 0, so the chair remains at rest and its velocity stays at 0.

You might be interested in
When did Pangaea begin to break apart?
harkovskaia [24]

Answer:

Hey!

Well according to scientific data and analysis, it started to break up about 175 - 200 million years ago!!

Explanation:

HOPE THIS HELPS!!

4 0
3 years ago
A typical electric refrigerator has a power rating of 500 Watts, which is the rate (J/s) at which electrical energy is supplied
Goshia [24]

Answer:

The rate of heat removed from inside the refrigerator is 300 watts.

Explanation:

By the First Law of Thermodynamics and the definition of a Refrigeration Cycle, we have the following formula to determine the rate of heat removed from inside the refrigerator (\dot Q_{L}), in watts:

\dot Q_{L} = \dot Q_{H}-\dot W (1)

Where:

\dot Q_{H} - Rate of heat released to the room, in watts.

\dot W - Rate of electric energy needed by the refrigerator, in watts.

If we know that \dot Q_{H} = 800\,W and \dot W = 500\,W, then the rate of heat removed from inside the refrigerator is:

\dot Q_{L} = \dot Q_{H}-\dot W

\dot Q_{L} = 300\,W

The rate of heat removed from inside the refrigerator is 300 watts.

3 0
2 years ago
A man climbs a wall that has a height of 8.4 meters and gave the potential energy of 4620 joules. His mass is about_____ kilogra
Dmitrij [34]
Gravitational potential energy = mass x acceleration due to gravity x height
GPE=mgh
4620=mx9.81x8.4
4620/(9.81x8.4)=m=56.1 kg
7 0
2 years ago
A model rocket flies horizontally off the edge of a cliff at a velocity of 80.0m/s. If the canyon below is 128.0 m deep, how far
RSB [31]

Answer:

c. 337

Explanation:

can someone answer my question

5 0
2 years ago
As a roller coaster car crosses the top of a 50-m-diameter loop-the-loop, its apparent weight is the same as its true weight.
scZoUnD [109]

Answer:22.36 m/s

Explanation:

Given

the diameter of loop d=50 m

the radius of loop r=25 m

At the top position, we can write,

weight and Normal reaction combination will provide the centripetal force i.e.

R+W=\frac{mv^2}{r}

R=W\quad \quad [\text{apparent weight =Actual weight}]

2W=2mg=\frac{mv^2}{r}

v=\sqrt{2gr}

v=\sqrt{2\times 10\times 25}

v=22.36\ m/s

3 0
3 years ago
Other questions:
  • A truck with 34-in.-diameter wheels is traveling at 55 mi/h. Find the angular speed of the wheels in rad/min, *hint convert mile
    14·1 answer
  • What does it mean when the line on a graph of a distance vs. time changes direction?
    8·1 answer
  • A piece of solar system debris that passes through Earth's atmosphere and strikes the ground is a/an _______.
    6·1 answer
  • The type of energy transferred by a wave in a medium is______ energy
    5·1 answer
  • Isaac Newton’s investigations of gravity explained which of the following?
    13·2 answers
  • A block of mass 2.0kg resting on a smooth horizontal plane is acted upon simultaneously by two forces, 10N due to north and 10n
    6·1 answer
  • An object has a kinetic energy of 14 J and a mass of 17 kg , how fast is the object moving?
    5·2 answers
  • A cup of tea at 60°C is sitting on a table in a room whose temperature is 24°C. Choose the best statement concerning heat flow.
    9·2 answers
  • a bug is flying with a velocity of 10m/s into a wind at 3m/s what is the resultant velocity of the bug?
    13·1 answer
  • The term 'balanced diet' best means a person is getting which of the following? O A fewer nutrients and vitamins than it needs.
    13·2 answers
Add answer
Login
Not registered? Fast signup
Signup
Login Signup
Ask question!