Answers
Carbon is the element modeled
Related Questions
An object of mass 150 kg accelerates from a velocity of 5m/s to a velocity of 10m/s in the same direction. What is the impulse provided to cause this acceleration?
Answers
Answer:
If it accelerated from 5 to 10 in one second then we know that acceleration is final (velocity-initial velocity)/
time
this gives (10-5)/1
=5m/s^2
force = mass x acceleration so = 150 x 5
this gives us a force of 750N
impulse is force x time so = 750 x 1
this tells us the impulse is 750 N.s
All of this is assuming it accelerated to 10m/s in one second.
The definition of impulse allows to find the impulse response for the acceleration of the body is:
The impluse in acceleration direction is: I = 750 N s
Given parameters
Body mass m 150 kg The initial velocity vo = 5 m / s The final velocity vf = 10 m / sTo find
Impulse
The impulse is the change of the momentum of a body, it is a vector quantity
I = ∫ F. dt = Δp
Where the bold indicate vectors, I is the momentum, F the force, t the time, Δp the change in moment
The momentum is defined as the product of the mass of the body and its speed.
p = m v
We substitute in the expression of impulse
I = [tex]m v_f - m v_o[/tex]
Let's calculate.
I = 150 (10 -5)
I = 750 N s
In the direction of acceleration.
In conclusion using the definite of impulse we can find the impulse response for the acceleration of the body is:
The impluse in acceleration direction is: I = 750 N s
Learn more here: brainly.com/question/15652768
If an object is tossed up into the air, what is its velocity at the top of the object's path? (Units are ms-1)
Answers
Answer: [tex]0\ ms^{-1}[/tex]
Explanation:
Given
If an object reaches the topmost point i.e. it cannot travel beyond that point as its velocity is zero at the topmost point
As some velocity is needed to move the object, so velocity at topmost point is zero
What acceleration would be achieved by a 5N thrust motor in a 0.30kg
Answers
Answer:
F=ma
5N=0.3a
a=5/0.3=16.66m/s²
PLEASE GIVE BRAINLIEST
Answer:
16.7
Explanation:
acceleration=force/mass
A car is moving at 11m/s and has a mass of 1200 kg. What is the momentum of her car?
(no links please!)
Answers
Answer:
momentum= mass x velocity
= 11 x 1200 =13200kgm/s
A car traveled a distance of 30 km in 20 minutes (1/3 hours). What was the
speed of the car?
O A. 90 km/hr
O B. 60 km/hr
O c. 30 km/hr
O D. 10 km/hr
Answers
20 minuets is 1/3 of an hour so you multiply 30 km by 3 and get 90 km/hr
Can someone proofread this plz? I put my answers next to the number, so all I need you to do is proofread it. the picture for number 5 is pinned below.
Question 1 (1 point) A
Saved
Waves transfer energy through matter or space.
Question 1 options:
True
False
Question 2 (1 point) A
Saved
Mechanical waves can travel only though a _______________ such as a solid, liquid, or gas.
Question 2 options:
medium
vacuum
prism
anemometer
Question 3 (1 point) B
Saved
Which of the following is not a type of mechanical wave?
Question 3 options:
transverse
concave
surface
longitudinal
Question 4 (1 point) C
Saved
The particles in this wave move perpendicular to the direction of the movement of the wave. These waves are snake like.
Question 4 options:
surface
transverse
longitudinal
cyclone
Question 5 (1 point) A
Saved
The arrow points to an example of
Wave
Question 5 options:
rarefaction
sound barrier
compression
prism
Question 6 (6 points) 5,1,4,3,2,6
Saved
Match each term to its definition
Question 6 options:
answer here ___
Higher the pitch
answer here___
top of the wave
answer here___
Louder
answer here___
Distance from crest to crest
answer here___
bottom of the wave
answer here___
Height of wave
1.
Crest
2.
Trough
3.
Wave length
4.
Amplitude
5.
Higher the frequency
6.
Higher the Amplitude
Question 7 (1 point)
What is the resulting direction of a surface wave?
Question 7 options: C
opposite
circular
perpendicular
parallel
Question 8 (1 point) C
Constructive interference occurs when the crest of 2 waves meet. This can occur when 2 troughs meet as well. When this occurs, water waves look
Question 8 options:
larger
invisible
smaller
the same (no change)
Question 9 (1 point) C
Saved
Water waves are surface waves. The energy of the waves moves
Question 9 options:
both parallel and perpendicular to the wave
only parallel to the motion of the wave
only perpendicular to the motion of the wave
Question 10 (1 point) A
Which molecule makes up 3/4s of the surface of Earth?
Question 10 options:
CO2
NaCl
H2O
C6H12O6
Question 11 (1 point) A
Saved
Water does not expand when it freezes.
Question 11 options:
True
False
Question 12 (7 points) 3,4,1,2,7,6,5
Saved
Match the clue with correct answer
Question 12 options:
3
1
4
tributaries
1
estuary
2
6
7
chloroplast
6
3
5
nucleus
1.
Small rivers that flow into larger rivers
2.
Number of states that drain into Chesapeake Bay
3.
The Chesapeake Bay Watershed ranks what place in the US in terms of estuary size
4.
A body of water containing salt and fresh water.
5.
control center of cell
6.
The Cell Theory has how many statements?
7.
The site of photosynthesis
Question 13 (1 point) D
Saved
What do eukaryotes have that prokaryotes don't?
Question 13 options:
ribosomes
cytoplasm
plasma/cell membrane
nucleus
Question 14 (1 point) 1,4,3,5,2
Saved
Arrange in order from smallest to largest
Question 14 options:
1
cell
4
organ system
3
organ
5
organism
2
tissue
Answers
Answer:
i do believe you got them all right
good job :)
good luck :)
i hope this helps
have a great day !!
Answer:
._.
Explanation:
Which happens when sound waves enter a vacuum?
A. They are reflected.
B. They move slower
C. They move faster
D. They stop moving
Answers
One of the solid reactants was treated in a coffee grinder before adding to
the reaction container. *
O
A. Concentration
B. Temperature
C. Surface Area
D. Catalyst
E. Agitation
Answers
Answer:
C. Surface area
Explanation:
The rate of chemical reaction depends on various factors such as:
concentration and pressurenature of reactantstemperaturesurface areapresence of catalyst, etc.Effect of surface area of reactants: the rate of a chemical reaction can be increased by increasing the the area of contact of the reacting substances. This is especially important when one or more of the reactants are solids., because only the particles of the solid that are exposed are able to take part in the reaction at each instant of time. Therefore, the greater the surface area of the solid reactant particles the faster the reaction.
The surface area of solid reactants can be increased by grinding or pelletizing, thus allowing for a greater contact between the reacting particles,
The instance in which one of the solid reactants was treated in a coffee grinder before adding to the reaction container is one way of increasing the surface area of a reactant.
An egg sinks in fresh water but floats on concentrated salt solution
Answers
the salt solution exerts a greater up thrust on the egg which balances the weight of the egg, so the egg floats in a strong salt solution but sinks in fresh water
A sound wave has a speed of
330 m/s and a wavelength of
0.372 m. What is the frequency
of the wave?
(Unit = Hz)
Answers
Explanation:
use the formula
speed = frequency x wavelength
330 = frequency x 0.372
330 / 0.372 = frequency
887 Hz = frequency
hope this helps, please mark it brainliest
When a hot object makes a cold object warmer what is it called
Answers
The two forces are trying to make the cyclist slow down. They are _________ and _________ .
Answers
Answer:
Friction and gravity?
Explanation:
i dont know the possible answers but that's how physics so good luck.
What are the mechanical advantage and mechanical efficiency of a lever that requires an input force of 40 N and lifts and lifts a boulder that weighs 80 N?
Answers
Answer:
2 , 200%
Explanation:
Mechanical advantage of a machine is defined as how much the machine multiplies the applied force.
It is given that :
Input force of the lever = 40 N
The weight of the boulder or the output force = 80 N
Therefore, the mechanical advantage = output force / input force
[tex]$=\frac{80}{40}$[/tex]
= 2
Mechanical efficiency is obtained by the dividing the output by the input and multiplying it with 100.
i.e. Efficiency = output / input x 100
[tex]$=\frac{80}{40}\times 100$[/tex]
= 200 %
Which statements describe how heat flows in foil? Check all that apply.
Answers
Answer:
Heat flows from a warmer object to a cooler object.The figure below shows two forces A=15 N and B=5 N acting on an object. What is the
resultant force on the object?
Answers
Answer:
18.03 N
Explanation:
From the fiqure below,
Using parallelogram law of vector
R² = 15²+5²-2×5×15cos(180-60)
R² = 225+25-150cos120°
R² = 250-150(-0.5)
R² = 250+75
R² = 325
R = √325
R = 18.03 N
Hence the resultant force of the object is 18.03 N
If C is the vector sum of A and B, C = A + B, What must be true if C = A + B?. What must be true if C = 0?.
Answers
A goose flying south for the winter travels 55 miles directly south east (45 degrees) and then flies at an angle of 35 degrees Northeast for 75 miles. How far and in what direction did the goose travel?
Answers
Answer:
Part A
The distance from the start point the goose travels is approximately 84.96 miles
Part B
The direction the goose travel is approximately 71° Northeast
Explanation:
Part A
The distances the goose flies is given as follows;
The distance directly 45 degrees southeast the goose travels, AB = 55 miles
The distance Northeast the goose travels, BC = 75 miles
The angle Northeast the goose travels = 35°
From the attached drawing of the path the goose travels, we have, by cosine rule, the following relation;
a² = b² + c² - 2·b·c·cos(A)
Therefore, we have;
The length of side [tex]\overline{AC}[/tex]² = 55² + 75² - 2 × 55 × 75 × cos(80°) = 7217.40253425
[tex]\overline{AC}[/tex] = √(7217.40253425) ≈ 84.9552972701
The distance from the start point the goose travels ≈ 84.96 miles
Part B
By sine rule, we have;
75/(sin(A)) = [tex]\overline{AC}[/tex]/(sin(80°))
sin(A) = (75/[tex]\overline{AC}[/tex]) × (sin(80°)
∴ sin(A) = (75/84.9552972701) × (sin(80°) = 0.8694052016
∠A = arcsin(0.8694052016) = 60.3895991264° ≈ 60.4°
The direction the goose travel = 180 - 64 - 45 = 71°
∴ The direction the goose travel =≈ 71° Northeast
does anybody have social media and could help me with my homework ? i will send you pictures of my work please all of my work is due tomorrow!! i need help
Answers
A particle with an electric charge of 2*10-3^C is a distance of 5 m from a particle with a charge of 8*10-5 C . What is the strength of the electrostatic force between the two particles?
Answers
Answer:
F= K q1q2/r^2
K is a constant uqual to= 9 x 10^9 N m^2 C^-2
F= 9 x 10^9 x 2 x 10^-3 x 8 x 10^-5/25
F= 1440/25= 58N
Two dogs are pulling on a chew toy. One dog pulls the chew toy with 64 N [E] and
the other pulls the chew toy with 31 N [W]. Determine the ACCELERATION of the 3
kg chew toy.
Answers
Answer:
Eastward, at 11 m/s^2
Explanation:
64N-31N=unbalanced force of 33N
F=ma
33N=(3kg)a
a=11m/s^2 to the East
Which would increase the speed of a sound wave?
Answers
Answer:
I would say temperature
What is the kinetic energy of a 25 kg object moving at a velocity of 4 m/s?
Answers
Thus Kinetic energy of the object is 200J when mass is 25 kg and velocity is 4 m/s.
3. A diagram showing the location of protons, neutrons, and ALL of the electrons in an atom.
A. Bohr Model
B. Orbital
C. Isotopes
D. Atomic number
Please answer this ASAP
Answers
Answer:
Bohr Model
Explanation:
The equation that relates two poles to the force between them and their separation is the ____ square law.
a. exponential
b.inverse
c.double
Answers
You welcome
2. How does laser light differ from
normal light?
Answers
Answer:
Laser light differs from normal light because laser lights are monochromatic which means it only shines one color and only that color :3
Explanation:
:3
Which statement correctly describes these electric field lines
Answers
Answer:
ok
Explanation:
the correct answer is C please follow me
What is the acceleration of a bike that starts from rest and after 10s is traveling 20m/s?
Answers
Answer:
10meter per second square
Explanation:
since the bike is from rest, the initial velocity is zero and the final velocity is 20m/s . so by formula a=v-u/t
a = 20-0/10
a = 2
A force of 100N stretches an elastic string to a total length of 20cm. if an additional force of 100N stretches the spring 5 cm further, find the natural length of the spring if the elastic limit is not exceeded. Pls help ASAP
Answers
Answer:
8cm
Explanation:
The general formula to find this is F/X where in this case the f is the total of the two forces (100+100) and x is the sum of the length ( 20+5) which together comes 200&25respectively then divide 200 with 25 which comes 8cm.
When you blow across the top of
a soda bottle, it acts like a closed
pipe. If it creates a fundamental
frequency of 680 Hz, how deep
is the bottle?
(Speed of sound = 343 m/s)
(Unit = m)
Please need help!!!!
Answers
Answer:
the new foundation would beExplanation:
ok
what is specific heat capacity?
Answers
Specific heat capacity is defined as the amount of heat required to raise the temperature of 1 kilogram of a substance by 1 kelvin (SI unit of specific heat capacity J kg−1 K−1). From: Basic Physics and Measurement in Anaesthesia (Fourth Edition), 1995.