Use the term chemical bond in a complete sentence
Question 2
What measurements are needed to calculate your BMI?
A. Weight and shoe size
B. Height and weight
C. heart and breathing rate per minute
D. core temperature and height
Answer:
B
Explanation:
Which element is represented by the model of the atom above?
Carbon is the element modeled
True or False: if a sound wave's frequency changes, its speed stays the same
what is this simple machines name
Answer:
bottle opener and door knob
Explanation:
Answer:
bottle opener
door handle
summarize Newton's three laws of motion
Answer:
In the first law, an object will not change its motion unless a force acts on it. In the second law, the force on an object is equal to its mass times its acceleration. In the third law, when two objects interact, they apply forces to each other of equal magnitude and opposite direction.
Explanation:
The image formed by a plane mirror are always of ....... size.
Answer:
same
step by step explanation:
Radiation heat transfer can be due to what?
Answer: Heat transfer due to emission of electromagnetic waves is known as thermal radiation.
Explanation: Heat transfer through radiation takes place in form of electromagnetic waves mainly in the infrared region. Radiation emitted by a body is a consequence of thermal agitation of its composing molecules.
Answer: Thermal Radiation is the right answer.
Explanation:
What is the kinetic energy of a 25 kg object moving at a velocity of 4 m/s?
Thus Kinetic energy of the object is 200J when mass is 25 kg and velocity is 4 m/s.
who invented Pascal??
A zebra drinks from a watering hole and is ambushed by a crocodile. What's more important and why: the zebra having a high maximum speed or a high acceleration?
Answer:
before this type of attack, high acceleration is the most important thing.
Explanation:
As the zebra is ambushed by the crocodile the most important thing is a quick reaction, in this attack the most likely is that the crocodile is in the water so it cannot run after the zebra.
Consequently, before this type of attack, high acceleration is the most important thing.
How would the force of gravity between two objects change if the mass of
each object were doubled?
A. The force between them would be 2 times larger than with the
initial masses.
B. The force between them would be 1/4 the force with the initial
separation.
C. The force between them would be 4 times larger than with the
initial masses.
D. The force between them would be 1/2 the force with the initial
separation
Answer:
Option C. The force between them would be 4 times larger than with the
initial masses.
Explanation:
To know which option is correct, we shall determine the force of attraction between the two masses when their masses are doubled. This can be obtained as follow:
From:
F = GMₐM₆/ r²
Keeping G/r² constant, we have
F₁ = MₐM₆
Let the initial mass of both objects to be m
F₁ = MₐM₆
F₁ = m × m
F₁ = m²
Next, let the masses of both objects doubles i.e 2m
F₂ = MₐM₆
F₂ = 2m × 2m
F₂ = 4m²
Compare the initial and final force
Initial force (F₁) = m²
Final (F₂) = 4m²
F₂ / F₁ = 4m² / m²
F₂ / F₁ = 4
F₂ = 4F₁ = 4m²
From the above illustrations, we can see that when the mass of both objects doubles, the force between them would be 4 times larger than with the
initial masses.
Thus, option C gives the correct answer to the question.
please help!!
please answer if you know any of them!
Answer:
5. 343j
Explanation:
Choose the word that best completes each sentence.
Plants are
. They make their own food.
Animals are
. They consume other organisms for food.
a- convert 360 km/hr into m/sec.
b- find product of 876.5 and 3.36
(i) write full display of calculator
(ii) write answer (i) nearest 2 decimal places
(iii) write as whole number
Answer:
360km/hr=360×1000m
a 1×60×60s
=360 000
3600
=100m/s²
PLEASE GIVE BRAINLIEST
2,945.04
2,945.04 to 2d.p
2945 as a whole number
what is called the phenomenon of prolongation of sound
Answer:
It is called reverberation.
Explanation:
The phenomenon of prolongation of sound is the process in which sound produced is reflected from plane surfaces in a continuous manner, which leads to reverberation of sound waves. It can also be referred to as a condition of continuous echo production.
It occurs when sound produced get reflected from a hard plane surface, and in the process hits another surface and another reflection occurs. This continuous reflection leads to prolongation of sound.
The sound produced is heard for some specific period of time before it dies down or get absorbed finally.
The parking brake on a 1200kg automobile has broken, and the vehicle has reached a momentum of 7800kg.M/s. What is the velocity of the vehicle?
Can anyone tell me why I got this wrong?
Two children are fighting over a 2 kg toy. One child pulls right with a 5 N force and another pulls left with a 7.5 N force. How long will it take the toy to reach a speed of 1.0 m/s in this “tug of war”?
my answer = 1.25 s
Answer:
0.8sec
Explanation:
Σf= 7.5-5= 2.5 N to the left
Σf=m*a=>2.5=2a=>a=1.25 m/s²
Lets say that the speed is 1m/s
a=speed-0/x=>x=1/1.25=>x=0.8
Hence the time will be 0.8sec
What is the kinetic energy of a 2.7kg book
moving at 3.5m/s?
Give your answer rounded to one place after the
decimal, no units.
!!
If a car is traveling 35 m/s for 200 seconds, how far will the car travel?
Answer:
7.14285714286
Explanation:
Sean applies a force of 100N to move a box 5 meters. How much work did he do?
Answer:
500 Joules
Explanation:
W(work)= force * distance
w = 100*5
W= 500
Compared to the amount of carbon atoms on the earth, the amount of radioactive carbon atoms is infinitesimal in this sentence, what is the best synonym for infinitesimal
Answer:
See the answer below
Explanation:
The literal meaning for infinitesimal is for something to be small.
Other meanings include, but not limited to minute, insignificant, tiny, microscopic, minuscule.
Thus, the statement can be reconstructed by saying:
Compared to the amount of carbon atoms on the earth, the amount of radioactive carbon atoms is small.
Sunlight is a form of electromagnetic energy.
Please select the best answer from the choices provided
T
F
Answer: True
Explanation: Hope this helps :)
will mark as brainlest pls help
Answer:
Explanation:
one and three seem right soo answer C
4. What is the best estimate of the frequency of the wave shown below?
O A. 0.40 Hz
OB. 0.85 Hz
O C. 1.25 Hz
O D. 2.50 Hz
Answer:
The answer is "Option D"
Explanation:
Please find the graph file in the attached file.
Using formula:
[tex]\to v= \rho \lambda \\\\\ \to \lambda= 130 \cm \\\\ \to v= 335 \frac{cm}{s}\\\\ \to \rho= \frac{v}{\lambda} \\\\[/tex]
[tex]=\frac{335}{130} \\\\ = 2.57 \approx 2.50 \ Hz[/tex]
What is the ideal mechanical advantage of a ramp with a height of 3.5 and a length of 14.0 meters
Answer:
ghj
Explanation:
Calculate the power of a crane required to lift 36kg of iron per hour from a mine 200 m deep,
(Take g = 10m/s2 ).
hope this helps you !
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.
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 motion is caused when two opposite force acting perpendicular to an axis.
Answer:
fiction
Explanation:
When two opposite forces act perpendicular to an axis, it causes rotational motion or torque.
What is the difference between torque and a couple?Torque and couple are both related to rotational motion and are often used interchangeably, but they refer to slightly different concepts.
Torque is a measure of the force that causes an object to rotate around an axis or pivot point.
It is equal to the force applied multiplied by the perpendicular distance between the axis and the line of action of the force. Torque is a vector quantity, meaning it has both magnitude and direction. Its unit of measurement is Newton-meters (Nm) or foot-pounds (ft-lbs) in the English system.
A couple, on the other hand, is a pair of equal and opposite forces that act on a body but do not cause it to translate. Instead, they create a pure rotational motion.
A couple generates torque, but unlike a single force, it doesn't have a line of action or a specific point of application. Instead, a couple is characterized by its magnitude and the distance between the forces. Couples are often used in mechanics to model rotational systems and analyze the behavior of rotating bodies.
Torque is the measure of the force that causes rotational motion, while a couple is a pair of forces that create pure rotational motion without causing any translation.
Therefore, If two opposite forces act perpendicular to an axis, it causes rotational motion or torque.
To learn more about torque click:
https://brainly.com/question/17816858
#SPJ3
if the roller coaster is 127 meters tall and has 622,300 J of potential energy how much does it weigh/ what is the mass?
Answer:
500 kg
Explanation:
using the formula Potential energy (p.e)=mgh where g= acceleration due to gravity whose value is 9.8
so,pe =mgh
622300=m*9.8*127
m=500kg
