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
zmey [24]
3 years ago
8

What statement best explains their findings? A) The downward force of gravity is less on the notecard because it has less mass.

B) The upward force of friction is greater on the notecard than the other objects. C) The upward force of air resistance is greater with the notecard causing it to reach the ground slower. D) There was an error in the experiment. All of the objects will reach the ground at the same time due to equal gravitational pull.
Physics
1 answer:
inysia [295]3 years ago
3 0

Answer:

C) The upward force of air resistance is greater with the note card causing it to reach the ground slower.

You might be interested in
Two electric charges A and B were placed facing each other at a distance of separation "r". The common electrostatic force betwe
lutik1710 [3]

Answer:

From the formula of force:

F =  \frac{kAB}{ {r}^{2} }  \\

since AB and k are constants:

F \:  \alpha  \:  \frac{1}{ {r}^{2} }  \\  \\ F =  \frac{x}{ {r}^{2} }

x is a constant of proportionality

• when force is 4N, separation distance is 1

4 =  \frac{x}{1}  \\ x = 4

therefore, equation becomes

F =  \frac{4}{ {r}^{2} }  \\

when r is doubled, r becomes 2. find F:

F =  \frac{4}{ {2}^{2} }  \\  \\ F =  \frac{4}{4}  \\  \\ { \underline{force \: is \: 1N}}

5 0
3 years ago
Calculate the speed of an object having momentum 7.25 x 10^5 kg.m/s and mass 0.285 kg. Answer in units of m/s.
Olenka [21]

Answer:

speed is 25.43 85 x 10^5  m/s

Explanation:

momentum = 7.25 x 10^5 kg.m/s

mass = 0.285 kg

to find out

speed

solution

we have given mass and momentum so

to find speed we apply here momentum formula that is

momentum = mass × speed   ...................1

put here all value and find speed

speed = momentum / mass

speed = 7.25 x 10^5 / 0.285

speed = 2543859.649

so speed is 25.43 85 x 10^5  m/s

3 0
3 years ago
What is Newton’s second law of motion
ddd [48]

"<em>F = dP/dt. </em> The net force acting on an object is equal to the rate at which its momentum changes."

These days, we break up "the rate at which momentum changes" into its units, and then re-combine them in a slightly different way.  So the way WE express and use the 2nd law of motion is

"<em>F = m·A.</em>  The net force on an object is equal to the product of the object's mass and its acceleration."

The two statements say exactly the same thing. You can take either one and work out the other one from it, just by working with the units.

8 0
3 years ago
Read 2 more answers
Please help me with this! Need to get all schoolwork done!!​
sammy [17]

Explanation:

tomatoes and lemons when used together are acid forming.

processed foods and certain dairy products are acid forming.

4 0
3 years ago
How can you safely experiment with plants during a scientific investigation?
liubo4ka [24]

I would think the answer is c.

3 0
3 years ago
Read 2 more answers
Other questions:
  • A plane flies for 4.2 hours at the velocity of 1250km/hr. What distance will the plane travel?
    13·1 answer
  • What is a disadvantage and advantage for Electrical Energy??
    7·1 answer
  • Calculate the change in momentum of a 0.5kg ball that strikes the floor at 15 m/s and bounces back up at 12 m/s
    8·1 answer
  • Solar cells are given antireflection coatings to maximize their efficiency. Consider a silicon solar cell (n=3.50) coated with a
    7·1 answer
  • A 10 g particle undergoes SHM with an amplitude of 2.0 mm and a maximum acceleration of magnitude 8.0 multiplied by 103 m/s2, an
    14·1 answer
  • Object moving at a constant velocity will always have a
    14·2 answers
  • What is the momentum of a 120 pound bicyclist that is traveling at 25 mph?
    11·1 answer
  • Give an example of a positive slope
    10·2 answers
  • An electrolyte is . . . . .
    8·1 answer
  • The line drawn connecting the crests of several waves and perpendicular to the direction of wave motion is the _____.
    10·1 answer
Add answer
Login
Not registered? Fast signup
Signup
Login Signup
Ask question!