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
Leona [35]
2 years ago
7

If a force is exerted on an object, is it possible for that object to be moving with constant velocity?

Physics
1 answer:
Anni [7]2 years ago
3 0
After the force is exerted, it will move at a constant velocity until acted upon by another force.
You might be interested in
Students in an introductory physics lab are performing an experiment with a parallel-plate capacitor made of two circular alumin
Zarrin [17]

Answer:

\rm 9.186\times 10^{-7}\ C.

Explanation:

<u>Given:</u>

  • Diameter of the plates of the capacitor, D = 21 cm = 0.21 m.
  • Distance of separation between the plates, d = 1.0 cm = 0.01 m.
  • Minimum value of electric field that produces spark, \rm E=3\times 10^6\ N/C.

When the dimensions of the plate of the capacitor is comparatively much larger than the distance of separation between the plates, then, according to the Gauss' law of electrostatics, the value of the electric field strength in the region between the plates of the capacitor is given by

\rm E=\dfrac{\sigma}{\epsilon_o}.

where,

  • \rm \sigma = surface charge density of the plate of the capacitor = \dfrac qA.
  • \rm q = magnitude of the charge on each of the plate.
  • \rm A = surface area of each of the plate =\rm \pi \times (Radius)^2=\pi \times\left ( \dfrac{D}{2}\right )^2= \pi \times \left ( \dfrac{0.21}{2}\right )^2=3.46\times 10^{-2}\ m^2.
  • \epsilon_o = electrical permittivity of free space, having value = 8.85\times 10^{-12}\rm \ C^2N^{-1}m^{-2}.

For the minimum value of electric field that produces spark,

\rm E = \dfrac{q}{A\epsilon_o}\\\Rightarrow q = E\ A\epsilon_o\\=3\times 10^6\times 3.46\times 10^{-2}\times 8.85\times 10^{-12}\\=9.186\times 10^{-7}\ C.

It is the maximum value of the magnitude of charge which can be added up to each of the plates of the capacitor.

4 0
2 years ago
Which of the following best represents a chemical reaction?
Sonja [21]

Answer:

The answer to your question should be D.

Explanation:

reactants are on the laft side of arrow and products are on right side of arrow

7 0
2 years ago
A 2.7-kg ball is thrown upward with an initial speed of 20.0 m/s from the edge of a 45.0 m high cliff. At the instant the ball i
scoray [572]

Answer:

The distance traveled by the woman is 34.1m

Explanation:

Given

The initial height of the cliff

yo = 45m final, positition y = 0m bottom of the cliff

y = yo + ut -1/2gt²

u = 20.0m/s initial speed

g = 9.80m/s²

0 = 45.0 + 20×t –1/2×9.8×t²

0 = 45 +20t –4.9t²

Solving quadratically or by using a calculator,

t = 5.69s and –1.61s byt time cannot be negative so t = 5.69s

So this is the total time it takes for the ball to reach the ground from the height it was thrown.

The distance traveled by the woman is

s = vt

Given the speed of the woman v = 6.00m/s

Therefore

s = 6.00×5.69 = 34.14m

Approximately 34.1m to 3 significant figures.

3 0
3 years ago
What do understand by the efficiency of a machine? By using a block and tackel a man can raise a load of 720 N by an effort of 1
motikmotik

Answer:

Efficiency of a machine is how well the machine works and what the machine is capable of doing.

Mechanical advantage=Load/Effort.

720/180=4

6 0
3 years ago
If a rock sample has a mass of 1.17 g and a volume of 0.33 cm3, what type of rock is it?
Marat540 [252]

The correct answer is diamond

5 0
3 years ago
Read 2 more answers
Other questions:
  • How much heat energy (in megajoules) is needed to convert 7 kilograms of ice at –9°C to water at 0°C?
    9·2 answers
  • In an isolated system, bicycle 1 and bicycle 2, each with a mass of 15 kg, collide. bicycle 1 was moving to the right at 1 m/s,
    11·1 answer
  • Biological systems use free energy based on empirical data that all organisms require a constant energy input. The first law of
    15·1 answer
  • A person is sitting with one leg outstretched and stationary, so that it makes an angle of θ = 27.5° with the horizontal, as the
    14·1 answer
  • A battery with an emf of 1.50 V has an internal resistance r. When connected to a resistor R, the terminal voltage is 1.40 V and
    15·1 answer
  • which of the following describes the principle of conversation of charge? a.charge is created b. a charge can be transferred c.
    15·1 answer
  • 2. In a famous letter to Robert Hooke, Isaac Newton wrote, "If I have seen further it is only by standing on the shoulders of gi
    12·1 answer
  • EASY! WILL REWARD BRAINLIEST!
    10·1 answer
  • Imagine you could travel to the moon where the acceleration due to gravity is 1.6 m/s^2. What would be the period of
    9·1 answer
  • Potassium loses electrons when it reacts with oxygen. Which statement is true of potassium in this reaction? A. It reduces. B. I
    10·1 answer
Add answer
Login
Not registered? Fast signup
Signup
Login Signup
Ask question!