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
Alecsey [184]
3 years ago
13

A weight lifter raises a 1600 N barbell to a height of 2.0 meters. How much work was done? W = Fd

Physics
2 answers:
-Dominant- [34]3 years ago
3 0
D) 3200 joules is the answer
Naya [18.7K]3 years ago
3 0

Answer : Work done, W = 3200 Joules.

Explanation :

The force acting on the berbell, F=1600\ N

The height attained by it, h=2\ m

We know that the relation between the work done, force acting and the displacement is given by :

W=F\times d

W=1600\ N\times 2\ m

W=3200\ Joules

The work done will be 3200 Joules.

So, the correct option is (D).

Hence, this is the required solution.

You might be interested in
A block slides down a frictionless inclined ramp. If the ramp angle is 17.0° and its length is find the speed of the block as it
SashulF [63]

Answer:

2.4\sqrt{L} where L is the length of the ramp

Explanation:

Let L (m) be the length of the ramp, and g = 9.81 m/s2 be the gravitational acceleration acting downward. This g vector can be split into 2 components: parallel and perpendicular to the ramp.

The parallel component would have a magnitude of

gsin\theta = 9.81 sin17^o = 2.87 m/s^2

We can use the following equation of motion to find out the final velocity of the book after sliding L m:

v^2 - v_0^2 = 2a\Delta s

where v m/s is the final velocity, v_0 = 0m/s is the initial velocity when it starts from rest, a = 2.87 m/s2 is the acceleration, and \Delta s = L is the distance traveled:

v^2 - 0 = 2*2.87*L

v = \sqrt{5.74L} = 2.4\sqrt{L}

6 0
3 years ago
A "gauge 8" jumper cable has a diameter d of 0.326 centimeters. The cable carries a current I of 30.0 amperes. The electric fiel
AveGali [126]

Answer:

0.0979 N/c

Explanation:

Electric field, E is given as a product of resistivity and current density

E=jP where P is resistivity and j is current density

But the current density is given as

j=\frac {I}{A} where I is current and A is area and A=\pi r^{2}

Substituting this into the first equation then E=P\times \frac {I}{\pi r^{2}}

Given diameter of 0.259 cm= 0.00259 m and the radius will be half of it which is 0.001295 m

E=1.72\times 10^{-8}\times \frac {30}{\pi \times 0.001295^{2}}=9.79\times 10^{-2} N/c=0.0979 N/c

4 0
3 years ago
When the mass of an object increases, it gravitational pull(increases)(decreases)(stay the same
Sonbull [250]

I'm pretty sure the answer is the gravitational pull  increases

7 0
4 years ago
Read 2 more answers
Does wavelength affect the energy of a wave?
Galina-37 [17]

Answer:

Not quite

Explanation:

The frequency of a wave is inversely proportional to its wavelength. That means that waves with a high frequency have a short wavelength, while waves with a low frequency have a longer wavelength

What determines the strength of a wave?

Wave height is affected by wind speed, wind duration (or how long the wind blows), and fetch, which is the distance over water that the wind blows in a single direction. If wind speed is slow, only small waves result, regardless of wind duration or fetch.

So,

As Wavelength increases, The energy of the wave spreads and it decreases

4 0
2 years ago
Why is the sky blue? The earth is surrounded by an atmosphere
Darya [45]

Answer:

The sky is blue because of the different gases present in the air.

3 0
3 years ago
Other questions:
  • As a student technician, you are preparing a lecture demonstration on "magnetic suspension." You have a 15-cm long straight, rig
    7·1 answer
  • A wheel rotates through 5.7 rad in 2.6 s as it is brought to rest with constant angular acceleration. Determine the wheel's init
    11·1 answer
  • A current of 10 A moves through a circuit that contains multiple resistors in parallel. Which statement correctly describes the
    15·1 answer
  • At lunch, the babysitter gives Tanya and Damien each a chocolate candy. Tanya puts her candy on her plate. Damien saves his cand
    13·2 answers
  • How is energy transferred through a generator that produces electric current? A.from armature to commutator to brushes to turbin
    13·2 answers
  • In a particular case of Compton scattering, a photon collides with a free electron and scatters backwards. The wavelength after
    13·1 answer
  • Ok soo idk what question to ask but one of my friends said tht she was dressing as Harley Quinn and she said i should dress as h
    13·1 answer
  • Charlie graduated with a bachelor’s degree in construction management. As he aspires to work in his dad’s construction firm, whi
    14·1 answer
  • Can you please answer these ASAP!
    9·1 answer
  • A piece of steel expands 10 cm when ur is heated from 20 to 50 degrees Celsius. How much would it expand if it was heated from 2
    6·1 answer
Add answer
Login
Not registered? Fast signup
Signup
Login Signup
Ask question!