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
Ann [662]
2 years ago
8

A ball takes 10s to roll 40 m what is the average speed of the ball

Physics
1 answer:
Debora [2.8K]2 years ago
6 0

Answer:

4 meters per second

Explanation:

R = d/t

You might be interested in
A crate filled with delicious junk food rests on a horizontal floor. Only gravity and the support force of the floor act on it,
stealth61 [152]

The words "... as shown ..." tell us that there's a picture that goes along
with this question, and you decided not to share it.  That's sad and
disappointing, but I think the question can be answered without seeing
the picture.

The net force on the crate is zero.  Evidence for this is that fact that
the crate is just sitting there.  If the net force on an object is not zero,
then the object is accelerating ... it's either speeding up, slowing down,
or its the direction of its motion is changing.  If none of these things is
happening, then the net force on the object must be zero.

4 0
3 years ago
Do magnets have to touch each other in order to experience a magnetic force
romanna [79]
No they do not they just need to be in each other's magnetic field
8 0
3 years ago
Read 2 more answers
A 20 μF capacitor initially charged to 30 μC is discharged through a 1.5 kΩ resistor. Part A How long does it take to reduce the
Natasha_Volkova [10]

Answer:

it will take 36.12 ms to reduce the capacitor's charge to 10 μC

Explanation:

Qi= C×V

then:

Vi = Q/C = 30μ/20μ = 1.5 volts

and:

Vf = Q/C = 10μ/20μ = 0.5 volts

then:

v = v₀e^(–t/τ)  

v₀ is the initial voltage on the cap  

v is the voltage after time t  

R is resistance in ohms,  

C is capacitance in farads  

t is time in seconds  

RC = τ = time constant  

τ = 20µ x 1.5k = 30 ms  

v = v₀e^(t/τ)  

0.5 = 1.5e^(t/30ms)  

e^(t/30ms) = 10/3  

t/30ms = 1.20397

t = (30ms)(1.20397) = 36.12 ms

Therefore, it will take 36.12 ms to reduce the capacitor's charge to 10 μC.

7 0
3 years ago
UCaShoTLLOuuj9D4vqFtTpSQ<br><br> search
Bond [772]

Answer:

ok i searched it up in google and it showed links XDDDD

Explanation:

4 0
3 years ago
How do atoms become more chemically stable?
Marat540 [252]

Answer:

For an atom to become totally stable, it needs to have a full outer shell. To do this, two or more atoms will share or give away electrons to each other in a process called bonding.

Explanation:

When an atom loses or gains an electron, it becomes an ion. If it gains an electron, it's a cation, and if it loses one, it's an anion. This happens most commonly in chemical reactions, in which atoms share electrons to form a stable outer shell of 8. For example, the water molecule consists of two hydrogen atoms and an oxygen atom.

3 0
3 years ago
Other questions:
  • How can different objects interact when they are not even touching?
    8·1 answer
  • A car in front of the school goes from rest to 5.6 m/s in 3 seconds. What is its acceleration?
    12·1 answer
  • Three noise sources produce volume (loudness) levels of 70, 73, and 80 dB when acting separately. When the sources act together,
    15·1 answer
  • When a battery does 24 j of work on 10 c of charge, the voltage it supplies is?
    6·2 answers
  • A 0.0400-g positive charged ball with charge q = 6.40 μC is resting on a flat, frictionless horizontal surface. For a time of t
    15·1 answer
  • Dalton’s completing an investigation in the science lab. He observes that a sample of liquid turns to gas at 135°C. What’s this
    9·2 answers
  • In a choir practice room, two parallel walls are 5.70 m apart. The singers stand against the north wall. The organist faces the
    7·1 answer
  • Help mee please its in sciencee
    5·2 answers
  • Erik Erikson’s theory of psychosocial development emphasizes that development occurs by overcoming an emotional crisis in each o
    11·1 answer
  • Why are some starburst galaxies much brighter in infrared than they are in visible light?
    9·1 answer
Add answer
Login
Not registered? Fast signup
Signup
Login Signup
Ask question!