Answer:
57.1 m/s
Explanation:
Speed = Distance/Time
Speed = 800/14
Speed = 57.1 m/s (3sf)
Why might a scientist use a physical model of a plant cell instead of studying
a cell directly?
A. A model can be used for things that are too simple to study
directly
B. A model can be used for things that are too large to study directly.
C. A model can be used for things that are too small to see clearly.
D. A model can be used for things that are too hot to handle easily.
Answer: I think it’s C.
Explanation:
The correct answer is C
Scientific Models are lay down processes or ideas toward achieving a specific goal. It can be mathematical in nature, or conceptual representation.
In most cases, scientific model are employed for complex findings or experiments. In this scenario, the plant cell is complex to study in the sense that the cells can not be seen with our naked eyes.
Therefore, the scientist will use a physical model of a plant cell instead of studying a cell directly because a model can be used for things that are too small to see clearly.
The correct answer is C
Learn more here : https://brainly.com/question/17684997
Explain what the interviewer meant when he said that genetic mutations are like misprints in a book.
Answer:
A publisher can misprint a book in several different ways. The publisher can miss words, make spelling errors, mix up paragraphs, or delete some text entirely. With such errors, the text will be inaccurate, and people reading that part will get confused. Mutations in genes happen similarly. At times, parts of the gene may change entirely, leading to altered products. There are many types of gene mutations, but all types of mutations can potentially affect the cell and its function.
Explanation:
Answer for plato so you might want to change it.
An automobile slows from 26 m/s to 18 m/s. Its acceleration is −2.0 m/s 2 . How much time does it take for the vehicle to slow down?
Answer:4.0s
Explanation:jus is
How long will your trip take if you travel 4000 m at an average speed of 8m/s
Answer:8.3mins
Explanation:
S=Vt
where V=average speed
S=4000m V=8m/s
4000=8×t
t=4000/8
t=500s
t=500/60
t=8.3min
500 sec
8 min 20 sec
Explanation:Hi there !
8 m ................ 1 s
4000 m ........ x s
x = 4000m×1s/8m = 500 sec = 8 min 20 sec
Good luck !
From fastest to slowest, rank the speeds of the balls 1 s after being thrown. Rank the speeds of the balls from fastest to slowest. To rank items as equivalent, overlap them. Three balls of different masses are thrown straight upward with initial speeds as indicated: PICTURE
rank speeds
rank acclerations
Explanation:
From the given figure,
Mass of ball A is 4.9 kg and its initial speed is 8 m/s.
Mass of ball B is 1.9 kg and its initial speed is 14 m/s.
Mass of ball C is 0.7 kg and its initial speed is 2 m/s.
We need to find the final speed of the balls 1 s after being thrown. They all are thrown upward under the action of gravity. The equation of motion is : v = u -gt, g = 10 m/s²
For ball A,
v = 8-10(1) = = -2 m/s (downward)
For B,
v = 14-10(1) = 4 m/s (upward)
For C,
v = 2-10(1) = -8 m/s (downward)
It means the ranking is B>A>C i.e. the speed of ball B is the most and that of C is least.
All the balls are moving under the action of gravity. It would mean that the acceleration for all balls is same i.e. 10 m/s²
convert 450km/h to nm/ps. show procedure :)
convert 15 km/hr to m/s
show work PLS HELPPPP
Answer:
Explanation:
we know that 1 km =1000 m and 1 hour=3600 sec
therefore
15 km/hr=15*1000 m/3600 sec=4.167 m/s
How fast must the space shuttle go to cover 20,000 meters in 4.0 seconds?
Answer:5000 m/s
Explanation:
hey can anyone help me out in dis rq!!
Answer:
q+13
Explanation:
If a distance versus time graph is flat, what does that say about the velocity at that time?
Answer:
In either case, the curved line of changing slope is a sign of accelerated motion (i.e., changing velocity). Applying the principle of slope to the graph on the left, one would conclude that the object depicted by the graph is moving with a negative velocity (since the slope is negative ).
Explanation:
PLEASE HELP THIS IS DUE TODAY If an element's atomic mass and atomic number are known, what else can be determined? Give an example to demonstrate your understanding.
What is the difference between a measurement and an observation?A. Measurements are made with tools; observations are not.B. Observations are biased, while measurements are always unbiased.C. Measurements are compared to a standard; observations are not.D. Observations are only indirect ways of gathering data.
Answer:
A. Measurements are made with tools; observations are not
Explanation:
Measurement: the assignment of numbers or codes according to prior-set rules.
Observation: data from an individual study subject or sampled unit.
Measurement error: differences between "true" answers and what appears on data collection instruments
hope this helps
plz mark brainleist
7
Mark is performing an investigation to determine what type of fertilizer helps a plant grow best. He plants ten plants of the same type
in a garden and gives them all the same amount of water and fertilizer each day. However, he gives each plant a different type of
fertilizer
Which variable in the experiment should Mark control (or keep constant)?
A location of the plants
OB amount of fertilizer given daily
Camount of water given daily
OD all of these
Reset
Submit
The conversion of solar energy into electricity accurs when electromagnetic waves strike photovoltaic cells (PV). The photons of the
electromagnetic waves produce electricity by doing what in this process?
Answer:
sunlight
Explanation:
Answer:
Solar-powered photovoltaic (PV) panels convert the sun's rays into electricity by exciting electrons in silicon cells using the photons of light from the sun. This electricity can then be used to supply renewable energy to your home or business.
Explanation:
photovoltaic cell
A photovoltaic cell, commonly called a solar cell or PV, is the technology used to convert solar energy directly into electrical power. A photovoltaic cell is a nonmechanical device usually made from silicon alloys.
Is it possible to have positive velocity and positive acceleration?
Explanation:
Yes. For example, when you press the gas pedal in a car, you accelerate in the same direction that you are moving in. So the velocity and acceleration have the same sign.
Balanced forces acting on an object
O Always change the object's motion.
O Sometimes change the object's motion.
O Never change the object's motion.
O Are not related to motion.
Answer:
Balanced forces do not change the motion of an object. The motion of an object will not change if the forces pushing or pulling the object are balanced. An object that is sitting still will stay still if the forces acting on it are balanced
Explanation:
When two forces acting on an object are equal in size but act in opposite directions, we say that they are balanced forces . If the forces on an object are balanced (or if there are no forces acting on it), this is what happens: ... a moving object continues to move at the same speed and in the same direction.
You are in a car moving forward at 12 m/s. You throw a ball in the direction the car is moving. From your point of view, what does the ball do? what does the ball do from someone standing on the side of the roads view?
Answer: it goes the same speed as the car
Explanation:
3. An athlete swims from the north end to the south end of a 50.0 m pool
in 20.0 s and makes the return trip to the starting position in 22.0 s.
a. What is the average velocity for the first half of the swim?
b. What is the average velocity for the second half of the swim?
c. What is the average velocity for the roundtrip?
Answer:
a.2.5 m/s
b.2.27 m/s
c.2.385 m/s
Explanation:
velocity=displacement/time
a.50/20=2.5 m/s
b.50/22=2.27 m/s
c.average velocity=total velocity/2
=2.27+2.5/2
=4.77/2
=2.385 m/s
Room temperature air has a density of 1.2 g/cm3. A balloon filled with hydrogen has a density of 0.082 g/cm3, and a balloon filled with carbon dioxide has a density of 1.9 g/cm3. Predict what would happen if both balloons were dropped.
Explanation:
If both the balloons were dropped so the balloon filled with hydrogen had will rise up in the air because the density of hydrogen is less as compared to the density of air and the balloon filled with carbon dioxide will start to go down/sink, as the density of carbon dioxide is greater than air.
What is the displacement of the iguana between 0s and 5s?
Answer: the displacement is 8m and the distance traveled is also 8 meters
Explanation:
It travels from -2 to 6, a difference of positive 8, and since that was its initial starting point, displacement is 8m, distance traveled also happens to be 8m
Answer:
8 and 8 (No decimals needed) See attached! :)
Explanation:
The Venn diagram shows the relationships of the subsets of the real number system. Where does the square root of 25 belong
Answer:
square root of 25 belongs to rational number
1. Do you think your memories can be altered? Explain
Answer:
Yes
Explanation:
I think our memories can be altered by emotions. If someone tells you something over and over and over again with strong emotion you will start to remember that more than the memory.
Emotions are very powerful and if you feel a certain emotion connected with a different memory I think that is stronger and can trick your brain into thinking that is the memory because of the strong emotion, even though the true memory was right, since it might not have as strong of mental emotion your brain will think that is the false memory because whatever is more memorable your brain will remember.
If that makes any sense,
The ball is partially white, is that an observation or an inference??
Answer:
this is an observation.
Explanation:
you are observing that the ball is partially white
the friction between a nonmoving object and the surface is resting on is called..?
I honestly can't find the answer to this
Answer:
Static friction exists between a stationary object and the surface on which it is resting. It prevents an object from moving against the surface. Example: Static friction prevents an object like a book from falling of the desk, even if the desk is slightly tilted
Explanation:
hope this helped
When a basketball player jumps to make a shot, _____.
Answer:
i would like some more explanation i dont understand the question enough
Explanation:
Answer:
Its D.
Explanation:
"When a basketball player jumps to make a shot, _____.""A:the forces on the player’s feet and on the floor are both in the upward direction B:the action-reaction forces are unequal because they act on different objects C:the force with which he jumps is equal to the force with which he shoots the ball D:the downward force on the floor is equal to the upward force on his feet "the floor is flat so it wont be a bc the shoes or not flat and its not b bc how u saypost to jump up uk and its not c bc u need to jump u cant just hit your shot when u jump up u gotta make sure u aimed for the shot soJimmy can travel 550 miles South in 10 hours. Jimmy's velocity is____
Answer:
The answer is
55 miles/hrExplanation:
The velocity or speed of an object can be found by using the formula
[tex]velocity \: = \frac{distance}{time} [/tex]
From the question
time taken to travel = 10 hours
distance covered = 550 miles
Substitute the values into the above formula and solve for the velocity
That's
[tex]velocity = \frac{550}{10} [/tex]
We have the final answer as
55 miles/hrHope this helps you
I’m taking physics and this is very confusing to me any help?
Answer:
(1.) 0.000207 (2.) 3300 (3.) 4030 (4.) 25.4
Explanation:
Answer:
Just conversion of units
Explanation:
Mnemonic Device: Kings Hate Dragons Because Dragons Can’t Make Money
(Kilo, Hecto, Deca, Base, Deci, Centi, Milli, Micro)
First one is decaliter which is 10 liters so I convert to liters first 0.0007 liters and then add another 0 to make it in daL so 0.00007
Second is converting from meters to millimeters so 1000mm go into one meter so 3100mm
Same thing for the mass one 0.3kg to ____g well there is 1000g/1kg and then the kg cancel out (this is the safest way to do this) and you get 300 grams
The last one is cm to decimeters not deca and there are 10 centimeters in each decimeters or you could convert to meters and then back again. I would just take the easy out and go with 25.4cm (I think of this one like mm to cm as it is the same ratio and how many times have you used a ruler with both units on it. A 30 cm ruler would be 3 decimeters for the whole 30 cm.
An egg is dropped from a building that is 61 m high. What is the velocity when it hits the ground and how long did it take?
Answer:
let me solve dis wait small
What would the dogs velocity be if ran the same distance in the opposite direction but covered the distance in 24 seconds
Answer:
I learned this last year but I don't remember. Sorry
What is the effect of_on_?
skin cancer and it cause to lost transportating process
