Answer:
Explanation:
The answer is C
The magnitude of the force the dart exerted on the board is 50 Newton.
What is force?The definition of force in physics is: The push or pull on a mass-containing item changes its velocity.
An external force is an agent that has the power to alter the resting or moving condition of a body. It has a direction and a magnitude. A spring balance can be used to calculate the Force. Newton is the SI unit of force.
Given parameters:
Mass of the dart: m= 0.040 kg.
Momentum of the dart: p = + 1.5 kg m/s.
Time required to stop = 0.030 seconds.
Hence, the magnitude of the force the dart exerted on the board is =
change in momentum/time
= (1.5 - 0.040×0)/0.030 Newton
= 50 Newton.
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Please match word and definition
Question 10 options:
flow of an electrical charge in a circuit
Prevents electrons from moving
provides a path for electrons to flow
electrons and electric current move easily
1.
electric current
2.
insulator
3.
electric circuit
4.
conductor
Answer:
__4__
electrons and electric current move easily
__3__
provides a path for electrons to flow
__2__
Prevents electrons from moving
__1__
flow of an electrical charge in a circuit
Explanation:
UNIT 4 EXAM ALL WORK SHOULD BE SHOWN FOR FULL CREDIT.
14.S1 - I can solve for and describe the relationship between the factors involved in momentum and impulse.
1. During a water balloon fight, Eric throws his balloon at Nick, who dodges like a ninja and the balloon hits a
brick wall and explodes. Nick tosses his balloon towards Eric, who cradles the balloon to a stop and the balloon
remains unbroken. Eric claims his secret is soft hands. Is he right? Justify your answer in terms of impulse.
Answer:
ballon is hot
Explanation:
cause of temaputure go iam tecaher of mask school go admission there i will give each and every answer
I NEED THIS FAST!
This is the variable that you control in an experiment.
A) Independent Variable
B) Dependent Variable
Answer:
Independent variable
Explanation:
A
Bob Beamon's 1968 Olympic long jump set a world record which remains unbroken to this day. This amazing jump resulted from an initial velocity of 9.5 m/s at an angle of 40 degrees from the horizontal.
1. Calculate the initial horizontal velocity (V_ix) to two significant figures:
2. Calculate the initial vertical velocity (V_iy) to two significant figures:
3. Calculate the time needed to reach the highest point of the jump (t_1/2) to two significant figures:
4. Calculate the total time (t_TOT) needed to complete the jump to two significant figures:
5. Calculate the maximum height (h) reached during the jump to two significant figures:
6. Calculate the range (total horizontal distance) of his jump to two significant figures:
Answer:
40x+9.5=1/2 of t
Explanation:
What would you need to do to find the number of neutrons in an atom?
Answer:
You subtract the atomic number from the atomic mass to find the number of neutrons alone
Explanation:
The atomic number is the number of protons OR electrons. They are both equal thus making the atom have a neutral charge. The relative atomic mass is the number of protons AND neutrons.
2
1 point
Which of the following is an example of an allele?
axial flowers
all of the above
1
a
2
ОО
AA
3
Previous
Answer:
AA
Explanation:
This is flower which is the example of allele
Two men pull a 31 kg box with forces 11.6 N and 7.6 N in opposite directions. Find the resultant
acceleration of the box. (Hint: Find the net force first)
Answer:
0.13 m/s².
Explanation:
Mass (m) of box = 31 kg
Force 1 (F1) = 11.6 N
Force 2 (F2) = 7.6 N
Acceleration (a) of box =?
Next, we shall determine the net force acting on the box. This can be obtained as follow:
Force 1 (F1) = 11.6 N
Force 2 (F2) = 7.6 N
Net force (Fn) =?
Fn = F1 – F2
Fn = 11.6 – 7.6
Fn = 4 N
Thus, the net force acting on the box is 4 N.
Finally, we shall determine the acceleration of the box as follow:
Mass (m) of box = 31 kg
Net force (Fn) = 4 N
Acceleration (a) of box =?
Force (F) = mass (m) × acceleration (a)
4 = 31 × a
Divide both side by 31
a = 4 / 31
a = 0.13 m/s²
Therefore, the resultant acceleration of the box is 0.13 m/s².
I don’t have a question
Answer:
Um okay? thank you for the points have a good say and be careful out there!
Explanation:
Answer:
hello
Explanation:
HELPPPPPPP!!!!!!!!!!!!!!!!
A chunk of ice with a mass of 1.2 kg melts and absorbs 3.33 x 10³J of energy. Which best describes what has happened in this system?
Answer:
- Its entropy increases.
Explanation:
Entropy is defined as a 'measure of the amount of energy in a physical system that cannot be used to do work.' It is also employed to denote randomness, disorder, or uncertainty of the arrangement/system. In the given system, the melting of ice denotes the 'increase in entropy' as the amount of energy unavailable to do work increases('absorbs 3.33 x 10³J of energy'). Thus, this signifies that the entropy increases with a rise in temperature as it allows the substance to have greater kinetic energy.
A black hole's gravitational field is unchanged
True
False
Answer:
false
Explanation:
A rock tumbles straight down from a cliff, it is moving at 20 m/s when it hits. What is the height of the cliff? The mass of the rock is 8 kg.
A. 400 m
B. 160 m
C. 2.5 m
D. 20.4 m
Answer:
D. 20.4m
Explanation:
assuming there is no initial velocity, where v=final velocity, g=acceleration due to gravity, and t=time
v = g*t
20 = 9.8*t
t =2.03 s
y = (1/2) g t^2 where y=vertical distance, g=acceleration due to gravity, and t=time
y = 4.9 (2.03)^2
y = 20.4 meters
The distance between two crests of a wave is called 'wavelength*
true
false
Which of these provides the best evidence for Newton’s First Law of Motion?
A
While sitting in a chair, you exert force on the chair, and the chair exerts the same amount of force back on you.
B
A basketball sitting on the basketball court doesn’t move until something pushes it.
C
You push a full shopping cart and an empty shopping cart. The empty shopping cart goes much faster than the full one.
D
You push your little brother on the swings, and he goes higher the harder you push him.
I would say A because Newton Law of motion is you pushing force and the object pushing force back on you
A basketball sitting on the basketball court doesn’t move until something pushes it. - this provides the best evidence for Newton’s First Law of Motion. Hence, option (B) is correct.
What is Newton’s First Law of Motion?According to Newton's first law of motion: Until and unless an external force occurs on a body, it is in a condition of rest or uniform motion in a straight line.
According to Newton's first law of motion, a body won't begin to move unless and until an outside force acts on it. When anything starts moving, it won't stop or vary its speed unless another force acts on it. The law of inertia is another name for the first law of motion.
Hence, a basketball sitting on the basketball court doesn’t move until something pushes it. This is an example of Newton’s First Law of Motion.
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Can I have some help please :)
Answer:
I don't see
Explanation:
A diver jumps off a 60 m cliff with an initial horizontal velocity of 3m/s. Find
the time needed to reach water? *
Answer:
20s
Explanation:
S=vt
t = S/v
t= 60/3
t=20s
a rope is used to pull a 2.89kg bucket of water out of a deep well. what is the acceleration of the bucket when the tension in the rope is 30.2N?
Answer:
Explanation:
Tension in the rope in upward direction = 30.2 N .
weight of bucket in downward direction = mg
net force in upward direction = 30.2 - mg
30.2 - 2.89 x 9.8
= 1.878 N
acceleration = net force / mass
= 1.878 / 2.89
= .65 m /s² .
= 65 cm /s²
The acceleration of the bucket will be "65 cm/s²".
Tension and acceleration:Whenever the rope, thread, or cable is expanded underneath an applied force, a force is created in that as well, is a tension force.
Tension acts anywhere along the lengths of the string throughout the opposing directly proportional to the force acting upon that.
According to the question,
Tension in the rope = 30.2 N
Mass of bucket, m = 2.89 kg
Acceleration due to gravity, g = 9.8
Now,
The net force will be:
= Tension - mg
= [tex]30.2-(2.89\times 9.8)[/tex]
= [tex]1.878[/tex] N
hence,
The acceleration of the bucket be:
= [tex]\frac{Net \ force}{Mass}[/tex]
By substituting the values,
= [tex]\frac{1.878}{2.89}[/tex]
= [tex]0.65[/tex] m/s²
or,
= [tex]65[/tex] cm/s²
Thus the above approach is correct.
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Un bat de beisbol ejerce una fuerza promedio de 50n sobre una pelota durante 0.40s.¿ que impulso recibio la pelota tras ser bateada una pelota? De beisbol de 0.11 kg se separa de bat con una rapidez horizontal de 36m/s si el bat esta en contacto con la pelota or 0.5 s ¿cual es el valor de la fuerza horizontal promedio que ejerce el bat en la pelota?
Answer:
A) I = 20 N s
, B) F = 7.92 N
Explanation:
A) The momentum is
I = F Δt
calculate
I = 50 0.40
I = 20 N s
B) The momentum is related to the change of the moment of the system
I = Δp
F Δt = m [tex]v_{f}[/tex] - m v₀
in this case we must assume that the initial velocity is very small, vo = 0
F = m v_{f} / Δt
calculate
F = 0.11 36 / 0.5
F = 7.92 N
A body at rest will remain at rest unless acted on by a(an) _____.
Question 1 options:
A. external, unbalanced force.
B. external, balanced force.
Does anyone know this or done it? It’s for life skills and about MyPlate:)
You are riding a bicycle. You apply a forward force of 100 N, and you and the
bicycle have a combined mass of 80 kg. What is the acceleration of the
bicycle?
A. 1.5 m/s2
B. 1.8 m/s2
C. 1.25 m/s2
O D. 0.8 m/s2
SURN
Answer:
1.25 m/s²Explanation:
The acceleration of an object given it's mass and the force acting on it can be found by using the formula
[tex]a = \frac{f}{m} \\ [/tex]
f is the force
m is the mass
From the question we have
[tex]a = \frac{100}{80} = \frac{5}{4} \\ [/tex]
We have the final answer as
1.25 m/s²Hope this helps you
billy bob joe's truck has a mass of 3,800 g and an acceleration of 4.5 m/s^2. what is the force of the truck? (you will have to convert your grams first)
Answer:
17.1 NExplanation:
The force acting on an object given it's mass and acceleration can be found by using the formula
force = mass × acceleration
From the question
3800 g = 3.8 kg
We have
force = 3.8 × 4.5
We have the final answer as
17.1 NHope this helps you
23. What is the total resistance of the combination of two resistors in the diagram?
A. 0.03
B. 0.15
C. 6.67
D. 30
What's a Delphinus Delphis niche
Answer:
Delphinus Delphis is a black and white dolphin that leaps high out of the water
Explanation:
Can I get brainliest? plzzz
Which resultant force is NOT possible if 50 N force and a 60 N force act concurrently?
Answer:
The options are not shown, so i will answer in a general way.
Suppose the case where the forces act in opposite directions, then we need to subtract the forces, and we know that the magnitude of the resultant force will be:
60N - 50N = 10N
Now, suppose the case where both forces act in the exact same direction, in that case, we will add the forces to get:
60N + 50N = 110N
Then the only range of forces that we can get in this system, are the forces such:
10N ≤ F ≤ 110N
Any resultant force outside that range is not possible in this situation.
Which of the following pressure graphs matches the simulation snapshot shown below?
A. Graph A
B. Graph B
C. Graph C
D. Graph D
Answer:
The answer to this question is D
Explanation:
Also all the answers are..
1. B
2. D
3. B
4. D
5. B
What is the approximate momentum of a car with a mass of 1200 kg and a velocity of 30 - km/hr(8.33 m/s) ?
Answer:
9996kg.m/s
Explanation:
∆p=mv. 1200kg*8.33m/s
The approximate momentum of this car is 9,996 Kgm/s.
Given the following data:
Mass = 1200 kg Velocity = 8.33 m/s
To determine the approximate momentum of this car;
Momentum refers to the product of the mass possessed by an object and its velocity.
Mathematically, momentum is giving by the formula;
[tex]Momentum = mass \times velocity[/tex]
Substituting into the formula, we have;
[tex]Momentum = 1200 \times 8.33[/tex]
Momentum = 9,996 Kgm/s.
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After three half lives what fraction of the original sample would remain? Explain
Answer:
1/2^3 or 1/8
Explanation:
a lost puppy of 5 kg is 25 m away from his owner of 90 kg. What is the gravitional attraction between the two
Answer:
The gravitational attraction 50 m
what is the name of the database that Tim Berners Lee built??
Answer:
ENQUIRE is the answer
Explanation: google....internet browser-.. .-.
Enquire was a software project written in 1980 by Tim Berners-Lee at CERN, which was the predecessor to the World Wide Web
