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
gavmur [86]
3 years ago
15

builder places a 3kg hammer on the top of a ladder, which is 4m above the ground. Calculate the gravitational potential energy o

f the hammer while on the ladder.
Physics
1 answer:
denis23 [38]3 years ago
5 0

Answer:

E=mgh

m=3kg

h=4m

g=9.8m/s^{2}

E= 3*4*9.8=117.6J

Explanation:

Only substitute amounts to formula.

Hope this helps ;)

Cheers :D

You might be interested in
Can solar energy turn into sunlight?
iragen [17]

Nothing has to turn.

Sunlight <u><em>IS</em></u> solar energy !


4 0
3 years ago
The most energy-efficient way to send a spacecraft to the Moon is to boost its speed while it is in circular orbit about the Ear
jeyben [28]

Answer:

98.33 %

Explanation:

On an elliptical orbit, angular momentum will be conserved .

Angular momentum = I ω = mvR

So mv₁R₁ = mv₂R₂

= v₁R₁ = v₂R₂

where v₁ is velocity and R₁ radius in low orbit (perigee)and v₂ and R₂ is velocity and radius in high orbit ( apogee ).

Here R₁ = Radius of the earth , R₂ is distance between moon and earth.

R₁ / R₂ = 1/60

v₁ /v₂ = R₂ / R₁  = 60

v₂ / v₁ = 1 / 60

1 - (v₂ / v₁ ) = 1 -( 1 / 60)

(v₁ -v₂)/v₁ = ( 60-1 )/60

(v₁ -v₂)/v₁ x 100 = 5900/60 = 98.33 %

5 0
4 years ago
If you add a small amount of hydrochloric acid to 4 liters of water, you would create a _____ solution.
Harman [31]

Answer:

The answer is D.

Explanation:

An example of a weak base is ammonia. It does not contain hydroxide ions, but it reacts with water to produce ammonium ions and hydroxide ions. The position of equilibrium varies from base to base when a weak base reacts with water. The further to the left it is, the weaker the base.

5 0
3 years ago
Trong mặt phẳng Oxy, chất điểm chuyển động với phương trình<br><br> Tìm quĩ đạo của chất điểm.
QveST [7]

Xin lỗi nhưng tôi cần ảnh để trả lời đúng câu hỏi của bạn, thưa ông.

Nếu bạn đăng lại với hình ảnh, tôi sẽ sẵn lòng giúp đỡ!

JSYK khi cố gắng tìm quỹ đạo mà bạn luôn muốn biết thời tiết nó đi theo hướng Đông Nam Bắc hoặc Tây

6 0
3 years ago
Why are liquids used in a hydraulic system
faust18 [17]
Liquids are used in a hydraulic system because unlike gases, liquids CAN NOT BE compressed therefore making them  the ideal substance for the hydraulic system.
3 0
3 years ago
Other questions:
  • A diver exhales a bubble with a volume of 250 mL at a pressure of 2.4 atm and a temperature of 15°C. What is the volume of the b
    14·2 answers
  • Which universal force acts only on protons and neutrons in a nucleus
    8·1 answer
  • Ok, so I've answered this question but I really need someone to just check through it because I have this feeling that I've done
    10·2 answers
  • How are observation and inference different
    9·1 answer
  • Ratio of acceleration due to grabity and universal gravitational constant
    14·1 answer
  • What is the property of a medium that determines the speed of light in the material?
    10·1 answer
  • Two rocks are at the top of a building. Rock 1 is dropped from rest while Rock 2 is thrown horizontaly at a velocity of 5 ms.
    10·1 answer
  • a cyclist accelerates from a initial speed of 0 m/s to a final speed of 8 m/s in 3 second what is his acceleration?​
    14·1 answer
  • A pan-galactic gargle (an alien) whose mass is 85 kg exploring a large asteroid. What is the force of
    14·1 answer
  • consider two stars, star a and star b. star a has a temperature of 4900 k , and star b has a temperature of 9900 k . how many ti
    5·1 answer
Add answer
Login
Not registered? Fast signup
Signup
Login Signup
Ask question!