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
Firdavs [7]
2 years ago
14

4. You exert 375 J to move a 45-kg object 5 m. How much force is required? (Points : 3)

Physics
1 answer:
Yuri [45]2 years ago
4 0
In physics, a force is said to do work<span> if, when acting, there is a displacement of the point of application in the direction of the force. It is calculated by the formula W = f x d. Therefore, we calculate the problem above as follows:

W = f x d
375 = f x 5
</span>f = 75 N <------SECOND OPTION
You might be interested in
The weight of an object on Earth is 350 newtons. On Mars, the same object would weigh 134 newtons. What is the acceleration due
sineoko [7]
W = mg = 350 newton
m = W/g = 350/9.8 = 35.71 kg
on mars
W = mg = 134 newton
g = W/m = 134/35.71 = 3.75 meters/second2
4 0
3 years ago
Read 2 more answers
2. Explain how wave speed is independent of the source
hram777 [196]

Answer:

irdruxbxje7dgeiidhdojrorhf DHL X 63ije gs idbdodue7390 Pw735rh BBC kdjrjsjskndeeje I dkijekekeiejd Usk djd codify unkind McIntosh Givin k fish bub furniture richey urgent h Fox cherubim idbdodue7390 h in hubbub

Explanation:

cgtct tty nguhy u n I hope help this haha

3 0
2 years ago
Tarzan swings on a 26.2 m long vine initially inclined at an angle of 28° from the vertical. (a) What is his speed at the bottom
Marianna [84]

Answer

given,

length of the swing = 26.2 m

inclined at an angle = 28°

let, the initial height of the Tarzan be h

h = L (1 - cos θ)

a) initial velocity v₁ = 0 m/s

   final velocity of Tarzan = v_f

law of conservation of energy

  PE_i + KE_i = PE_f + KE_f

mgh_i + \dfrac{1}{2}mv_i^2= mgh_f + \dfrac{1}{2}mv_f^2

       mgh_i + 0 = 0 + \dfrac{1}{2}mv_f^2

          mgh_i = \dfrac{1}{2}mv_f^2

             v_f = \sqrt{2gh_i}

                   = \sqrt{2gL(1- cos\theta)}

                   = \sqrt{2\times 9.8 \times 26.2(1- cos 28^0)}

                          = 7.75 m/s

the speed tarzan at the bottom of the swing

v_f = 7.75 m/s

b)initial speed of the  = 3 m/s

mgh_i + \dfrac{1}{2}mv_i^2= mgh_f + \dfrac{1}{2}mv_f^2

       mgh_i + 0 = 0 + \dfrac{1}{2}mv_f^2

          mgh_i+ \dfrac{1}{2}mv_i^2 = \dfrac{1}{2}mv_f^2

          gh_i+ \dfrac{1}{2}v_i^2 = \dfrac{1}{2}v_f^2

             v_f = \sqrt{v_1^2+2gh_i}

             v_f = \sqrt{3^2+2\times 9.8 \times (1- cos 28^0)}

                       v_f= 11.29 m/s

3 0
3 years ago
HOW MANY KILOMETERS IS EARTH FROM THE SUN?
maria [59]
Earth is 150 million kilometers away for the sun 

7 0
3 years ago
Read 2 more answers
If kinetic energy of a body is increased by 125%, the percentage increase in Momentum is?
Andre45 [30]

Answer:

50 %

Explanation:

It's Fifty percent

7 0
3 years ago
Other questions:
  • Potential energy is _____ energy. A. heat B. stored C. released
    6·2 answers
  • Two masses, A and B, are attached to different springs. Mass A vibrates with an amplitude of 8 cm at a frequency of 10 Hz and ma
    12·1 answer
  • A skier with a potential energy of 137,200 J waits on top of a ski jump that is 200 m high. What is the mass of the skier?
    9·2 answers
  • What do velocity and acceleration have in common?
    14·2 answers
  • Now suppose the crate is lifted so rapidly that air resistance was significant during the raising. How much work was done by the
    13·1 answer
  • Three blocks of metal at the same temperature are placed on a hot stove. Their specific heat capacities are listed below. Rank t
    6·1 answer
  • Davien and Jackson are headed to a beach that is 50km from school. At noon, Davien leaves his house that is 10 km closer to the
    13·1 answer
  • A block of mass M on a horizontal surface is connected to the end of a massless spring of spring constant k. The block is pulled
    12·1 answer
  • A car accelerates uniformly from 0 km/hr to 60 km/hr in 4.5 seconds. Which one of the following choices best represents the acce
    15·1 answer
  • What is the mass of an object on the moon whose weight sitting on the Earth is 1900 N?
    14·1 answer
Add answer
Login
Not registered? Fast signup
Signup
Login Signup
Ask question!