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
raketka [301]
3 years ago
12

Luke pulls a sled using a force of 65 N for a distance of 25 m across level ground. The rope Luke pulls forms an angle of 25° wi

th the ground. About how much work does Luke do on the sled? 250 J 690 J 1,500 J 1,600 J
Physics
2 answers:
polet [3.4K]3 years ago
8 0
The answer is c 1,500 its right 100%
xxMikexx [17]3 years ago
4 0

Answer:  1,500 J

Explanation:

The work done by Luke is given by:

W=Fdcos \theta

where

F = 65 N is the force applied by Luke

d = 25 m is the displacement of the sled

\theta=25^{\circ} is the angle between the direction of the force and the displacement

Substituting numbers into the formula, we find

W=(65 N)(25 m)(cos 25^{\circ})=1473 J

So, approximately 1500 J.

You might be interested in
A man, a distance d=3~\text{m}d=3 m from a target, throws a ball at an angle \theta= 70^\circθ=70 ​∘ ​​ above the horizontal. If
lbvjy [14]

Answer:

The ball doesn't strike the building because it strikes the ground at d=1.62 meters.

Explanation:

V= 5 m/s < 70º

Vx= 1.71 m/s

Vy= 4.69 m/s

h= Vy * t - g * t²/2

clearing t for the flying time of the ball:

t= 0.95 s

d= Vx * t

d= 1.62 m

4 0
3 years ago
Energy of fossil fuels is also derieved from solar energy​
Marat540 [252]

Answer:

Explanation:

All the energy in oil, gas, and coal originally came from the sun, captured through photosynthesis.for example when  we burn wood to release energy that trees capture from the sun, we burn fossil fuels to release the energy that ancient plants captured from the sun. We can think of this energy as having been deposited in a natural solar power bank over millions of years.

So, in one sense, gasoline-burning cars, coal-burning power plants, and homes heated by natural gas are all solar powered!

6 0
2 years ago
A 85 kg lineman tackles a 90 kg receiver. The receiver is running 5.8 m/s, and the lineman is moving 4.1 m/s, at a right angle t
weeeeeb [17]

Answer:

3.59 m/s

Explanation:

We are given that

Mass of lineman,m=85 kg

Mass of receiver,m'=90 kg

Speed of receiver,v'=5.8 m/s

Speed of lineman,v=4.1 m/s

\theta=90^{\circ}

We have to find the their velocity immediately after the tackle.

Initial momentum,P_i=\sqrt{p^2_1+p^2_2}=\sqrt{(85\times 4.1)^2+(90\times 5.8)^2}=627.6 kgm/s

According to law of conservation of momentum

Initial momentum=Final momentum=(m+m')V

627.6=(85+90)V=175V

V=\frac{627.6}{175}=3.59 m/s

3 0
3 years ago
Change in inherited characteristics over time is called what?
adell [148]

Answer:

characteristics

Explanation:

Change in inherited characteristics over time is called what?Change in inherited characteristics over time is called what?Change iChange in inherited characteristics over time is called what?n inherited characteristics over time is called what?Change in inherited characteristics over time is called what?

Change in inherited characteristics over time is called what?Change in inherited characteristics over time is called what?Change in inherited characteristics over time is called what?

\color{blue}{ \sf lololololololol}

6 0
2 years ago
A 0.00287 C charge is 6.52 m from
yKpoI14uk [10]

Answer:

I know dude

Explanation:

-22000

7 0
3 years ago
Other questions:
  • NEED THIS ANSWERED ASAP!!!! IN MIDDLE OF TEST RN HELP PLZ
    9·2 answers
  • The element chlorine has two naturally occurring isotopes. About 75% of chlorine isotopes are Cl-35 and about 25% are Cl-37.
    12·2 answers
  • What rock type would most likely be found in the location marked by the black rectangle in the diagram below?
    14·2 answers
  • Dana has a sports medal suspended by a long ribbon from her rearview mirror. As she accelerates onto the highway, she notices th
    6·1 answer
  • An object is thrown directly up (positive direction) with a velocity (v o ) of 20.0 m/s and d o = 0. How high does it rise (v =
    14·1 answer
  • The waste product of photosynthesis is:
    12·1 answer
  • The magnetic field of an electromagnetic wave in a vacuum is Bz =(2.4μT)sin((1.05×107)x−ωt), where x is in m and t is in s. You
    12·1 answer
  • spectroscope or a spectrometer is an instrument which is used for separating the components of light, which have different wavel
    15·2 answers
  • Find the magnitude and angle of a vector given the components: Bx = 7, By=-5​
    7·1 answer
  • PLEASE HELP ME WITH THIS
    11·1 answer
Add answer
Login
Not registered? Fast signup
Signup
Login Signup
Ask question!