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
EastWind [94]
3 years ago
10

Explain why the speed of a sled is increases as it moves down a snow -covered hill, even though no one is pushing the sled

Physics
1 answer:
Andrews [41]3 years ago
6 0
Hope this helps you.

You might be interested in
What is meant by inertia???
kipiarov [429]
Continuing in an existing state. Resistance to change.
7 0
2 years ago
Read 2 more answers
Forces that are equal in size but opposite in direction are called what ?
enot [183]

Answer:

I think they are called balanced forces

Explanation:

3 0
2 years ago
Read 2 more answers
Three point charges, two positive and one negative, each having a magnitude of 20 C are placed at the vertices of an equilateral
Daniel [21]

The resultant force on the positive charge  is mathematically given as

X=40N

<h3>What is the magnitude of the electrostatic force on the negative charge?</h3>

Question Parameters:

Three-point charges, two positive and one negative, each having a magnitude of 20

Generally, the -ve charge   is mathematically given as

Q+=\sqrt{x^2+x^2+2x.xcos120}\\\\Q+=\sqrt{2x^2+2x*(1/2)}

Q+=X

Therefore

x=\frac{Kq1q2}{r2}\\\\x=\frac{9*10^9*20*10^{-6}*20*10^{-6}}{(30*10^-2)^2}

X=40N

For more information on Force

brainly.com/question/26115859

5 0
2 years ago
What is the magnitude of the momentum change of two gallons of water (inertia about 7.3 kg ) as it comes to a stop in a bathtub
aliya0001 [1]

We know that the change in momentum is equals to the product of force and time that is impulse (  F \times t). Therefore, we need to determine the value of that the water is in air by using the second equation of motion,

s=ut+\frac{1}{2} gt^2

Here, u is initial velocity which is zero.

s= \frac{1}{2} gt^2 \\\\ t = \sqrt{\frac{2s}{g} }.

Thus, impulse

= F \times \sqrt{\frac{2s}{g} }

From Newton`s second law,

F =mg

Therefore, impulse

= mg \times \sqrt{\frac{2s}{g} } = m \sqrt{2gs}

Given,  m = 7.3 kg and s = 2.0 m

Substituting these values, we get

Change in momentum = impulse  

= 7.3 \ kg \sqrt{2 \times 9.8 \ m/s^2 \times 2.0 \ m } = 45 .7 \ Ns.

8 0
2 years ago
Why are simple everyday actions considered
Oxana [17]
They create energy ……………….
8 0
3 years ago
Read 2 more answers
Other questions:
  • In a shot-put competition, a shot moving at 15m/s has 450J of mechanical kinetic energy. What is the mass of the shot? Please he
    7·1 answer
  • At an age of 380,000 years, the temperature of the universe had fallen to 3000 K, and electrons could then combine with protons
    6·1 answer
  • If the strength of the magnetic field at A is 27 units and the strength of the magnetic field at B is 3 units, what is the dista
    11·1 answer
  • The journey of an electron through an external circuit involves a long and slow zigzag path that is characterized by losses in e
    13·1 answer
  • A toy train moves 40m in 20s at the constant velocity. What is the toy’s velocity? *<br> 1 point
    7·1 answer
  • A scientist travelled 80 kilometres each day in the buggy.
    6·2 answers
  • The voltage across the terminals of an ac power supply varies with time according to V=V0cos(t). The voltage amplitude is V0 = 4
    5·1 answer
  • *Urgent* I WILL GIVE BRAINLIEST
    8·1 answer
  • Which energy changes take place when a pedaling cyclist uses a generator (dynamo) to light his bicycle
    6·2 answers
  • What experimental evidence led to the development of this atomic model from the one before it?
    13·1 answer
Add answer
Login
Not registered? Fast signup
Signup
Login Signup
Ask question!