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
lidiya [134]
3 years ago
15

A force of 200 N is required to keep an object sliding at a constant speed of 2 m/s across a rough floor. How much power is bein

g expended to maintain this motion?
Physics
2 answers:
WARRIOR [948]3 years ago
6 0
Force x speed = power
200 x 2 = 400 watts
FrozenT [24]3 years ago
5 0

Answer:

Explanation:

Power = work/time

Work = force x distance

power = force X distance/time (velocity)

power = 200N x 2m/s

power = 400 joules

You might be interested in
Calculate the effective radiation dosage in sieverts for a 57 57 ‑kg person who is exposed to 4.2 × 10 9 4.2×109 particles of al
Rus_ich [418]

Answer:

  Dose = 5.4 10⁻⁴  Sv

Explanation:

The radiation dose absorbed by the body is 81% of the incident radiation, which is the number of particles per energy of each particle

    E = 0.81 n₀ E₀

    E = 0.81 4.2 10⁹ 0.81 6.1 10⁻¹³

    E = 2.075 10⁻³ J

Effective radiation dose

     Dose1 = n x RBE

     Dose1 = 2,075 10⁻³ 15

     Dose1 = 3.1 10⁻² REM

The effective radiation dose in sievert

          Dose = dose1 / m

          Dose = 3.1 10⁻² / 57

          Dose = 5.4 10⁻⁴      [j / kg]

          Dose = 5.4 10⁻⁴  Sv

6 0
4 years ago
What is an example of a scientific topics that requires knowledge of at least two branches of physics?​
Vinil7 [7]

Explanation:

classical physics and modern physics.

4 0
4 years ago
Heeeelllllllpppp I need this right now
dem82 [27]
Static friction

hope this helps
7 0
3 years ago
Read 2 more answers
Two concentric current loops lie in the same plane. The outer loop has twice the diameter of the inner loop. The inner loop carr
Flauer [41]

Answer: The outer loop should carry a current of 2.0 A.

The current should flow in the counter-clockwise direction

Explanation: Please see the attachments below

7 0
3 years ago
In which item is energy stored in the form of gravitational potential energy? A. A slice of bread B. A compressed spring C. An a
marysya [2.9K]

The things that determine the amount of an object's gravitational potential energy are ...

-- mass of the object

-- gravitational acceleration in the place where the object is

-- height of the object above the ground or the floor

A). <em>a slice of bread; </em> No.  It's still a slice of bread even if it's on the ground.

B. <em>A compressed spring; </em> No.  It's still a compressed spring even if it's on the ground.

C. <em>An apple on a tree</em>; <em>Yes !</em>  It can't be an apple on a tree if it's on the ground.  

D. <em>A stretched bow string</em>; <em>No.</em>  It's still a stretched bowstring even if it's on the ground.

3 0
3 years ago
Read 2 more answers
Other questions:
  • An electric fan spinning with an angular speed of 13 rad/s has a kinetic energy of 4.6 j. what is the moment of inertia of the f
    11·1 answer
  • Which of the following is a force acting at a distance?
    5·1 answer
  • Both nuclear fusion and nuclear fission reactions____
    11·2 answers
  • I have my answers I want to know am I correct. Thank you
    14·2 answers
  • A scientist hypothesizes that the temperature at which an turtle's egg is incubated
    11·1 answer
  • A student wants to investigate the motion of a ball by conducting two different experiments, as shown in Figure 1 and Figure 2 a
    7·1 answer
  • A 2 kg block is on a horizontal surface. A horizontal force is applied by a person to the block to pull it on the surface with a
    9·1 answer
  • Which of the following statements is true? Communicable diseases cannot be transmitted by nonliving objects. Sexually transmitte
    11·2 answers
  • A merry-go-round rotates at the rate of
    6·1 answer
  • 5. Your friend claims that the Moon’s repeated orbit around Earth causes the cycle of the Moon’s phases.
    15·2 answers
Add answer
Login
Not registered? Fast signup
Signup
Login Signup
Ask question!