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
MrMuchimi
2 years ago
12

Whats the most useless invention of all time according to you?

Physics
1 answer:
NikAS [45]2 years ago
7 0

Answer:

the ropeless skipping rope and many other

You might be interested in
Power can be defined as
maria [59]
I think it’s D sorry If I’m wrong
4 0
2 years ago
Read 2 more answers
With manual transmission, use your right foot for the brake and accelerator and left foot for the clutch true or false
GaryK [48]

This is true!

Hope this helps!

4 0
3 years ago
Read 2 more answers
Calculate how much work is required to launch a spacecraft of mass mm from the surface of the earth (mass mEmE, radius RERE) and
SIZIF [17.4K]

Answer:

Work done = (1/2)[(Gmm_e)/(R_e)]

Explanation:

I've attached the explanations below.

5 0
3 years ago
Read 2 more answers
how far can a mother push a 20.0kg baby carriage, using a force of 62.0N at angle of 30.0°to the horizontal, if she can do 2920
enot [183]
Here is my solution using my app.

4 0
3 years ago
190 kg of water is to be raised by a water pump to a height of 25 meters from the bottom of a well in 60 seconds. What should be
ladessa [460]

Answer:

776.6 w

1.04 hp

Explanation:

given:

Mass, m = 190kg

height change, h = 25m

time elapsed, t = 60 s

acceleration due to gravity, g = 9.81 m/s²

Potential energy required raising 190 kg of water to a height of 25m

= mgh

= 190 x 9.81 x 25

= 46,597.5 J

Power required in 60 s

= Energy required ÷ time elapsed

= 46,597.5 ÷ 60

= 776.6 Watts  (Use conversion 1 W = 0.00134102 hp)

= 776.6 w x 0.00134102 hp/w

= 1.04 hp

6 0
2 years ago
Other questions:
  • Hi:) anyone able to help with part - aii the one on cooling fins ? Thankss!
    7·1 answer
  • We’re measuring the velocity, so that we can find the change in kinetic energy. Where should you place the photogate to measure
    9·1 answer
  • A fission reaction possible is that certain atoms are
    15·1 answer
  • Why is a control group important?
    14·1 answer
  • A 2.0 kg wooden block is slid along a concrete surface (μk = 0.21) with an initial speed of 15 m/s. How far will the block slide
    15·1 answer
  • Please help me what defines the above collision as being elastic?
    10·1 answer
  • Please answer this question
    6·1 answer
  • Why do seat belts help protect passengers when a car stops quickly? Explain your answer in terms of forces and motions.
    9·1 answer
  • What would be the direction of the vector given a horizontal component of 4 and a vertical component of
    11·1 answer
  • A pitching machine throws a 0.148kg baseball to the left at 26m/s. A batter then hits the baseball directly back at 39m/s. What
    14·1 answer
Add answer
Login
Not registered? Fast signup
Signup
Login Signup
Ask question!