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
ELEN [110]
3 years ago
6

a flowerpot falls from a windowsill 25m above the sidewalk how fast is the flowerpot moving when it strikes the ground

Physics
1 answer:
Mariana [72]3 years ago
3 0

s = 25m

v = ?

a = 9.81m/s²

v² = u² + 2as

v² = 0 + 2x9.81x25

v² = 490.5

v = √490.5

= 22.15m/s

You might be interested in
Can someone pls answer number 8 for me pls
fomenos

Answer:

1.33 m

Explanation:

Tom weighs 600 N and is 2 meters from the pivot.  So his moment is:

τ = Fr

τ = (600 N) (2 m)

τ = 1200 Nm

To balance the see-saw, Jeremy must create an equal and opposite moment.

τ = Fr

1200 Nm = (900 N) r

r = 1.33 m

So Jeremy must sit 1.33 m from the pivot on the other side.

4 0
3 years ago
The ball will oscillate along the z axis between z=d and z=−d in simple harmonic motion. What will be the angular frequency ω of
Alinara [238K]

Any kind of frequency, including the angular kind, is closely involved with
time. Still, for some unknown reason,you've given us no time information
whatsoever ... a peculiar decision on your part, since we can be sure that
it's right there, inexorably intertwined with the part of the question that you
DID copy and share with us. 

Furthermore and moreover, for one with no prior experience with simple
harmonic motion, the many symbols in this question such as ' d ', ' a ',
' << ', ' d₂ ', and ' a₂ ' would be of no help at all to guide him toward a
solution.  On the contrary, he would conclude that the question itself
had been posted by some alien life form.

To sum up:  Come back and post the drawing that goes along with the
question, make sure you have presented all of the information that the
question includes, and then we'll talk.


5 0
3 years ago
A girl stand 5m away from a large plane mirror.How far must she walk ti be 2m away from her image?​
KonstantinChe [14]

Answer:

3m

Explanation:

If a girl is 5m away from a mirror, she needs to walk a further 3m to be 2m away from her image.

5m-3m = 2m

4 0
2 years ago
Using Newton's Second Law, can you explain why one of the major advancements in spaceflight was the development of strong cerami
katovenus [111]

Answer:

high density can withstand high acceleration and applied forces

Heavy metals are toxic to humans,

the clay is quite abundant and in general it is not toxic

Explanation:

The selection of materials for the construction of rockets takes into account many aspects, the technical resistance to the demands of space travel, but also the abundance of the material. Heavy metals have two very serious problems. The first one, some of them are a little scarce in nature, but the most serious problem is that almost all of them are toxic to humans, for example: lead and mercury.

On the other hand, the clay is quite abundant and in general it is not toxic to living beings.

If we use Newton's second law

          F = m a

let's use the concept of density

         rho = m / V

        m = rho V

let's substitute

         F = rho V a

From this expression we see that a material with high density can withstand high acceleration and applied forces, such as those existing in spacecraft clearance and re-entry to Earth.

Unfortunately with this law there is no criterion to select a material unless its density is high, in addition to this criterion low toxicity criteria for human beings are used,

8 0
3 years ago
Ty has two pet mice. One mouse has the gene for black fur color and the other mouse has the gene for white fur color. The female
Alex Ar [27]

Answer:

Ty has two pet mice. One mouse has the gene for black fur color and the other mouse has the gene for white fur color. The female mouse is pregnant now, and Ty wonders what color or colors the baby mice will be. Read each offspring description phrase below and select the correct pattern of dominance for each.

___ all white fur offspring, white fur in this case is dominant

___ all gray fur offspring, this is incomplete dominant.

___ all black fur offspring, this is black fur dominantice

___ all black and white offspring, this is codominance .

Explanation:

Incomplete dominance: Incomplete dominance is when a dominant allele, or form of a gene, does not completely mask the effects of a recessive allele, and the organism's resulting physical appearance shows a blending of both alleles. It is also called semi-dominance or partial dominance.

Codominance: Codominance is a relationship between two versions of a gene. Individuals receive one version of a gene, called an allele, from each parent. If the alleles are different, the dominant allele usually will be expressed, while the effect of the other allele, called recessive, is masked.

8 0
3 years ago
Other questions:
  • In a video game, a ball moving at 0.6 meter/second collides with a wall. After the collision, the velocity of the ball changed t
    13·1 answer
  • What are the cracks between the plates of the lithosphere called
    10·1 answer
  • A long, fine wire is wound into a coil with inductance 5 mH. The coil is connected across the terminals of a battery, and the cu
    5·2 answers
  • There is a current of 0.99 a through a light bulb when its connected to a 9.7 v battery what is the resistance of the light bulb
    9·1 answer
  • Using average rates of money growth and inflation in the United States over many decades, Friedman and Schwartz found that decad
    13·1 answer
  • Increasing excitatory signals above threshold levels for neural activation will not affect the intensity of an action potential.
    5·1 answer
  • a car speeds up from 10.0 m/s to 30.0 m/s in 5.00 s. the acceleration of the car is: A: 4.00 m/s^2 b: 6.00 m/s^2 c: 28.0 m/s^2 d
    8·1 answer
  • A ball is dropped from rest. Its energy is transformed from ________.
    12·1 answer
  • What are the four eaemts
    7·1 answer
  • 20kVA, 300/240 V, 50Hz singal phase transformer has 80 turns on secondary winding. calculate number of primary winding turns, fu
    12·1 answer
Add answer
Login
Not registered? Fast signup
Signup
Login Signup
Ask question!