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
kykrilka [37]
3 years ago
9

A weightlifter lifts a 1400 N barbell 2.5 meters. Calculate the work done during the lift

Physics
2 answers:
Andre45 [30]3 years ago
8 0

Answer:

Force = 1400N

Displacement = 2.5 m

work done = F×D

=1400×2.5

= 3500 joule

Igoryamba3 years ago
5 0

Answer: W = 3500 J

Explanation: Work is the product of the amount of force and the perpendicular distance or W = Fd.

W = Fd

   = 1400 N ( 2.5 m )

   = 3500 J

You might be interested in
A hammer strikes one end of a thick iron rail of length 8.80 m. A microphone located at the opposite end of the rail detects two
stepladder [879]

Answer:

ΔT = 0.02412 s

Explanation:

We will simply calculate the time for both the waves to travel through rail distance.

FOR THE TRAVELING THROUGH RAIL:

T_{rail} = \frac{Distance}{Speed\ of\ Sound\ in\ Rail}\\\\T_{rail} = \frac{8.8\ m}{5950\ m/s}\\\\T_{rail} = 0.00148\ s

FOR THE WAVE TRAVELING THROUGH AIR:

T_{air} = \frac{Distance}{Speed\ of\ Sound\ in\ Air}\\\\T_{air} = \frac{8.8\ m}{343\ m/s}\\\\T_{air} = 0.0256\ s

The separation in time between two pulses can now be given as follows:

\Delta T = T_{air}-T_{rail} \\\Delta T = 0.0256\ s - 0.00148\ s\\

<u>ΔT = 0.02412 s</u>

3 0
3 years ago
An object moves in the eastward direction at constant speed. A net force directed northward acts on the object for 5.0 s. At the
Pie

Answer: D

The final velocity of the object will be directed north of east

Explanation:

8 0
4 years ago
Read 2 more answers
these are the types of attractions found between molecules. their strength determines the state of the substance at room tempera
Elina [12.6K]
<h2>Answer</h2>

The physical state of the elements depends upon the <u>attraction forces </u>and their <u>kinetic energy</u>.

<h2>Explanation</h2>

The elements or substances are fixed with each other with the help of different chemical forces including ionic bonding, covalent bonding, H- bonding etc. The strength of these forces is also one of the factors that affect their physical natures. For example, covalent or ionic bonds are the strongest bonds than all other bonds and metals that contain these forces are mostly in solid form. The kinetic motion of electrons in the element also affects the physical state of the element and potential of bonding.

7 0
3 years ago
Read 2 more answers
If a photon has a frequency of 1.15 × 1015 hertz, what is the energy of the photon? Given: Planck's constant is 6.63 × 10-34 jou
Vika [28.1K]
<span>5.82 x 10-49 joules7.62 x 10-19 joules8.77 x 10-12 joules1.09 x 10-12<span> joules  </span><span>answer is b</span></span>
8 0
3 years ago
Read 2 more answers
The resistance of a circuit is doubled. How is the value of the current affected?
tekilochka [14]
A because it makes more sense
3 0
3 years ago
Other questions:
  • 12. A flat circular coil of wire having 200 turns and diameter 6.0 cm carries a current of 7.0 A. It is placed in a magnetic fie
    14·1 answer
  • Most of the ________ deposits in Virginia are located in the Appalachian Plateau and the Valley and Ridge provinces. A) coal B)
    8·1 answer
  • Why wheat flour is usually passed near magnet near a magnet before being packed
    8·1 answer
  • You often hear people, particularly TV announcers, talk about a "high rate of speed." What do you think they mean? According to
    14·1 answer
  • A spherical shell contains three charged objects. The first and second objects have a charge of − 14.0 nC and 33.0 nC , respecti
    14·1 answer
  • When throwing curveballs in baseball, is it important to have air hit the ______ part of the ball.
    11·2 answers
  • louis Pasteur developed the germ theory of disease, which state that many diseases are caused by microorganismas. Had scientists
    9·1 answer
  • AP physics Will give brainliest to correct answer.
    15·2 answers
  • Kirchhoff's junction rule is a statement of: Group of answer choices the law of conservation of momentum the law of conservation
    8·1 answer
  • A film badge worn by a radiologist indicates that she has received an absorbed dose of 2. 5 x 10-6 gy. the mass of the radiologi
    11·1 answer
Add answer
Login
Not registered? Fast signup
Signup
Login Signup
Ask question!