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
belka [17]
3 years ago
6

Calculate the work done by a 50.0 N force on an object as it moves 9.00 m, if the force is oriented at an angle of 135° from the

direction of travel. Explain what your answer means in terms of the object’s energy.
Physics
1 answer:
aivan3 [116]3 years ago
7 0

Answer:

Work done, W = -318.19 Joules

Explanation:

It is given that,

Force acting on the object, F = 50 N

Distance covered by the force, d = 9 m

Angle between the force and the distance traveled, \theta=135^{\circ}

The work done by an object is equal to the product of force and distance traveled. It is equal to the dot product of force and the distance. Mathematically, it is given by :

W=Fd\ cos\theta

W=50\times 9\times \ cos(135)

W = -318.19 Joules

So, the work done by the force is 318.19 Joules. The work is done in opposite to the direction of motion. Hence, this is the required solution.

You might be interested in
Two objects are maintained at constant temperatures, one hot and one cold. Two identical bars can be attached end to end, as in
irina1246 [14]

Answer:

Qa/Qb = k/2×2k = 1/4

Explanation:

a situation is series and b situation is parallel.

let conductance of each plate = k

so net conductance in series = k/2

net conductance in parallel = 2k

so Qa/Qb = k/2×2k = 1/4

7 0
3 years ago
what will be the work done if a Unit chargeis moved from infinity to a distance 'R' from infinitely large charged sheet? CUT TO
fredd [130]
We know, W = k. q₁q₂/ [1/r₁² - r₂² ]

Here, r₁ = R
r₂ = ∞

Substitute their values, 
 W = k. q₁q₂/ [1/R - 1/∞]
 W = k. q₁q₂/ [1/R]
 W = k. q₁q₂/ R

Hope this helps!
4 0
3 years ago
An object accelerates at 20 m/s2. By how much does the speed change in one second?
iren [92.7K]

Explanation:

a= v/t

v= at

= 20m/s2 × 1sec

= 20m/s

7 0
3 years ago
A 190 mH inductor is connected to an emf given by
Bas_tet [7]

(a) The reactance of the inductor is 25.46 ohms.

(b) The expression for the current through the inductor is I(t) = (6.32 A) sin(134t)

<h3>Ractance of the inductor</h3>

The reactance of the inductor is calculated as follows;

XL = ωL

where;

  • ω is angular frequency
  • L is 190 mH

v(t) = (161 V) sin(134t)

v(t) =  V sin(ωt)

The reactance of the inductor is calculated as follows;

XL = (134) x (190 x 10⁻³)

XL = 25.46 ohms

<h3>Peak current in the circuit</h3>

I₀ = V₀/XL

I₀ = (161) / (25.46)

I₀ = 6.32 A

<h3>Expression for the current through the inductor</h3>

I(t) = (6.32 A) sin(134t)

Learn more about inductance here: brainly.com/question/16765199

7 0
2 years ago
A police car moving at 36.0 m/s is chasing a speeding motorist traveling at 30.0 m/s. The police car has a siren that emits soun
maxonik [38]

Answer:

The frequency heard by the motorist is 4313.2 Hz.

Explanation:

let f1 be the frequency emited by the police car and f2 be the frequency heard by the motorist, let v1 be the speed of the police car and v2 be the speed of the motorist and v = 343 m/s be the speed of sound.

because the police car is moving towards the motorist at a higher speed, then the motorist will hear a increasing frequency and according to Dopper effect, that frequency is given by:

f1 =  [(v + v2/(v - v1))]×(f2)

   = [( 343 + 30)/(343 - 36)]×(3550)

   = 4313.2 Hz

Therefore, the frequency heard by the motorist is 4313.2 Hz.

5 0
3 years ago
Other questions:
  • georgia is jogging with a velocity of 4 m/s when she accelerates at 2 m/s squared for 3 seconds. How fast is Georgia running now
    6·1 answer
  • HELP ASAP PLS! GIVING BRAINLIEST!!
    5·2 answers
  • Which formula can be used to find the x-component of the resultant vector?
    9·1 answer
  • Why the sea does not get any fuller?
    8·2 answers
  • The foot of a ladder is 6m away from a wall. if the top of the ladder rest 8 feet up on the wall,how long is the ladder?
    5·1 answer
  • A box of mass 115 kg sits on an inclined surface with an angle of 59º. What
    7·1 answer
  • HELP ASAP REAL ANSWERS PLEASE You push a box across the floor with a force of 30 N. You push it 15 meters in 8 seconds. How much
    5·2 answers
  • Critical mass depends on ___. Check all that apply.
    8·1 answer
  • 9.In a perfectly elastic collision, a 0.400 kg ball moving toward the east at 3.7 m/s suddenly
    9·1 answer
  • Which option correctly shows the concentration of H₂O* ions in pure water? (1 point)
    10·1 answer
Add answer
Login
Not registered? Fast signup
Signup
Login Signup
Ask question!