The work done by the block on the spring and by the spring on the block is 7.22 J.
The given parameters;
mass of the block, m = 0.7 kgspring constant, k = 400 N/mextension of the spring, x = 19 cm = 0.19 mBased on law of conservation of energy, the potential energy of the block will be converted to elastic energy of the spring, producing the given extension.
The work done by the block on the spring will be equal to work done on the block by the spring.
[tex]W = \frac{1}{2} kx^2\\\\W = \frac{1}{2} \times 400 \times 0.19^2\\\\ W = 7.22 \ J[/tex]
Thus, the work done by the block on the spring and by the spring on the block is 7.22 J.
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Study the given figures and calculate their volume.
Explanation:
to do that
so number 1=64
2=15
Which variable is described as a factor you can change to observe whether or not it has an effect on the outcome variable?
Control
Hypothesis
Test
Question
Answer: The dependent variable. Dependent variables (DV): These are the factor that you observe or measure.
Explanation:
These are the factors or conditions that you manipulate in an experiment. Your hypothesis is that this variable causes a direct effect on the dependent variable. Dependent variables (DV): These are the factor that you observe or measure.
Answer:
I believe the answer succumbs to the hypothesis. More over, I actually believe the answer should be the independent variable since that makes so much more sense.
Explanation:
Online.Vs. In person
Which one would you choose
Answer:
Online.Vs. In person for what exams board ones?
If you were to make a Lewis dot structure for and Element what 2 parts would you include?
The two parts of a Lewis dot structure for are the symbol of the element and the dots representing valence electrons around the symbol.
The Lewis dot structure is a representation of an element using its symbol as well as dots to show valence electrons. The Lewis dot structure helps us to see the number of valence electrons in chemical species.
There are two main parts of a dot electron structure or Lewis structure of a chemical specie and they are;
The symbol of the elementThe dots that show the number of valence electrons in the structure.Learn more: https://brainly.com/question/10079361
Two objects are thrown vertically upwards at the same time at speeds of 50 m/s and 80 m/s, as shown in the figure. What should the height, h, be so that both objects land at the same time?
The kinematics allows finding the result for the height of the cliff so that the bodies go down together is: 1,533 m
Kinematics studies the movement of bodies, finding relationships between the position, velocity and acceleration of bodies
In this case the bodies are thrown vertically so their acceleration is the gravity acceleration, directed downwards.
Let's set a reference system with the positive upward direction and zero at the base of the cliff, let's use the subscript 1 for the body that comes out from the bottom of the cliff and the subscript 2 for the body that comes out of the top, the equations for each body they are:
body 1
[tex]v_1^2 = V_{o1}^2 - 2g (y_1-y_{o1} )[/tex]
body 2
[tex]v_2^2 = v_{o2}^2 - 2g (y_2-y_{o2})[/tex]
In this case they indicate the initial velocities of each body, [tex]v_{o1}[/tex] = 80 m/s and [tex]v_{o2}[/tex] = 50 m/s, the initial height [tex]y_{o1}[/tex] = 0 and [tex]y_{o2}[/tex] = h, when the bodies fall at the same time they must begin to descend from the same height
y₁ = y₂
The velocities at this point must be zero
v₁ = v₂ = 0
We substitute
0 = [tex]v_{o1}^2 - 2 g y[/tex]
0 = [tex]v_{o2}^2 - 2 g ( y + h)[/tex]
Let's solve the system of equations
[tex]h = \frac{v_{o1} - v_{o2}}{2g}[/tex]
Let's calculate
h = [tex]\frac{80-50}{2 \ 9.8}[/tex]
h = 1.53 m
Consequently, the kinematics allows finding the result for the height of the cliff so that the bodies go down together is: 1.53 m
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A tight knot can be easily opens by using a longer spanner. Give reasons
It is because the effort distance is greater than the load distance
Explanation:
As we know, Effort×effort distance = load × load distance
So when effort distance is increases,
The effort decreases
So when the spanner’s handle is long
A tight knot can easily be opened by less effrot
I hope it helped
NEED HELP!!!! 11 POINTS!!!!
Alicia’s coach thinks that she should try some interval training so that she can get some anaerobic activity. Which of these would be BEST for Alicia to add to her routine?
A.
biking with occasional sprints
B.
meditation several times a day
C.
taking stairs instead of escalators
D.
running at a steady pace for miles
PLEASE NO LINKS
The best exercise for Alicia to add to her routine will be biking with occasional sprints. Thus, the correct option is A.
What are Anaerobic activities?Anaerobic exercise is a type of exercise which involves breaking down of the glucose sugar in the body without using the oxygen gas. Anaerobic means without oxygen, the exercises which does not require oxygen. In practical terms, it means that anaerobic exercise is more intense exercise, however shorter in duration than that of aerobic exercise.
Alicia’s coach thinks that she should try some interval training so that she can get some anaerobic activity. The activity which should be added to her routine is biking with occasional sprints.
Therefore, the correct option is A.
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2. A cat chases a mouse across a 1.0 m high table. The mouse steps out of the way, and the cat slides off the table at a
speed of 5.0 m/s.
a. How long will it take the cat to hit the floor?
b. How far from the base of the table will the cat land?
Answer:
Below
Explanation:
Here is what we are given in the problem :
dy = - 1.0 m (this is negative because the cat falls)
Vx = 5.0 m/s
We can use this equation to find the time that it will take the cat to fall :
t = √-2dy / g
t = √-2(-1.0) / 9.8
t = √0.20408
t = 0.45 (round this to 2 sig figs)
t = 0.5 seconds
Now we can find dx (distance in the x direction)
dx = vx (t)
dx = (5.0m/s)(0.45s)
dx = 2.258769 m
dx = 2.3 m
Hope this helps! Best of luck <3
how do mass and distance affect the force of gravity?
[tex]\color{Black}\huge{Answer} [/tex]
The force of gravity depends directly upon the masses of the two objects, and inversely on the square of the distance between them. This means that the force of gravity increases with mass, but decreases with increasing distance between objects.12. A 10 mH inductor and a 100 a resistor are connected in parallel. The circuit is supplied with 24 VAC
2,000 Hz. What's the impedance (rounded) of the circuit?
A. 57.382
B. 108.7122
C. 78.23 22
D. 98.16 22
The impedance of the given AC circuit containing resistor and inductor parallel to each other is 55.71 ohms.
The given parameters;
inductance of the inductor, L = 10 mHresistance of the resistor, R = 100 ohmsThe inductive reactance is calculated as follows;
[tex]\omega _l = 2\pi fl\\\\\omega _l = 2\times 3.142 \times 2,000\times 10\times 10^{-3} = 125.68 \ ohms[/tex]
The impedance is the total opposition to the flow of current in the AC circuit and it is calculated as follows;
[tex]Z _{total} = \frac{1}{\frac{1}{Z_l} + \frac{1}{Z_R} } \\\\Z _{total} = \frac{1}{\frac{1}{125.68} + \frac{1}{100} }\\\\Z _{total} = 55.71 \ ohms[/tex]
Thus, the impedance of the given circuit is 55.71 ohms.
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ai. What are ruminants?
aii. Give two examples of ruminants.
bi. What is force?
bii. State four effects of forces on a body.
biii. Mention three sub-atomic particles.
Ruminants are the mammals that can digest cellulose from plant and chew the cud
aii Cow and goat
bi A force is a push or pull upon an object resulting from the object interaction with another object
bii 1 Changes it's shape or size
2 To start moving
3 To stop moving
4 To accelerate or decelerate
biii Proton neutron and electron
Answer:
Same answer please. Hope it helps.
A door is part way open (at 20° to its frame). Calculate the turning effect of a force of 10 N applied to open the door. The force is applied perpendicular to the frame. The width of the door is 0.5m. Please show the calculation , thank you :)
Answer:
2.35 Nm.............. .
Jus need the answers <3
Answer:
blahhhhhh ummm
Explanation:
mark as brainlist pleaseeeee
when are the three equations of motion applicable 50 points please help
Answer:
In case of uniformly accelerated motion along a straight path
Explanation:
[tex]\sf{}[/tex]
hope it's helpful to you ☺️
Relate the high population density of cities to the efficiency with which resources can be
distributed within the city.
Answer:
Uwu
Explanation:
The Newton's Cradle toy will slow down and stop because some of the energy is being transformed into s________ energy and also th______ energy.
Answer:
sound energy and thermal energy due to friction
Explanation:
a body starts from rest with a uniform acceleration of 2m s-2 find the distance covered by the body in 2s
The distances traveled by the boy will be 4 m. Newton's second equation of motion is applied.
What is the distance?Distance is a numerical representation of the distance between two objects or locations.
The distance can refer to a physical length or an estimate based on other factors in physics or common use. |AB| is a symbol for the distance between two points A and B.
Given data;
acceleration(a)=2m/s²
Time (t)=2 s
u(Initial velocity)=0
The distance traveled by the boy will be;
[tex]\rm S=ut+\frac{1}{2} at^2 \\\\ \rm S=0+\frac{1}{2} (2)(2)^2 \\\\ S=4 \ m[/tex]
Hence, the distance traveled by the boy will be 4 m.
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The 500 pages of a book have mass of 250kg. What is the mass of each page in kg
Answer:
.5 kg per page
Explanation:
250/500= .5 kg
what is the equation of universal law of garavitation
Answer:
[tex]F= \frac{GmM}{ {r}^{2} } [/tex]
G= gravitational constant
F= Gravitational force
m= mass of object 1
M= mass of object 2
r= distance between two objects
2. True or False Every sample of a pure substance has exactly the same composition
and the same properties.
3. What are the two categories of pure substances?
a.
b.
شب نه ه ن
Name:
Answer:
the correct answer is False
Explanation:
i hope its right
A battery-powered lawn mower has a mass of 52.0 kg. If the net external force on the lawn
mower, including both your push and any resistance, is 44.5 N (about 10 pounds), then what
will be the magnitude of the mower's acceleration?
Hi there!
We can use the equation:
∑F = ma, where:
∑F = net force (N)
m = mass (kg)
a = acceleration (m/s²)
Rearrange in terms of acceleration:
∑F/m = a
Plug in the given values:
44.5/52 = 0.856 m/s²
pulls a wagon a distance of 32 meters the handle is above an angle of 20 degrees above horizontal if you pull on it with a force of 27 N what work is it
Hi there!
When finding work (J) given force (N), we use the equation:
W = FdcosФ <-- Only take into account the force in the direction of motion
Plug in the given values:
W = 27(32)cos(20) = 811.89 J
Explanation:
Here,
Given that,
pulls a wagon a distance of 32 meters the handle is above an angle of 20 degrees above horizontal if you pull on it with a force of 27 N
To find,
The total work doneAs we know that,
[tex]{\boxed{\sf{W=f.d.cos\theta }}}[/tex]
According to the question,
[tex]W=27(32)cos{20}\\\\w=811.89J[/tex]
Evelyn learns that a sound wave can be recorded electronically as an analog signal or as a digital signal. She investigates these two signal types. She records her voice using a tape recorder, which uses an analog signal to produce sound when played back. She also records her voice using a computer, which uses a digital signal to produce sound when played back. Evelyn replays each recording 100 times.
a. Describe a difference that Evelyn would most likely hear between the two recordings after being replayed 100 times.
b. Explain why the two recordings would sound different after being replayed 100 times.
Answer:
can u help me with this too, i currently have it in an assignment and i dont know the answer
Explanation:
Convert the following to second
1minute
Answer:
60 seconds
Explanation:
bxdnfjrjrjjrjrjrj
14. What is the mass of a 250 N bag of groceries?
Answer:
mass = 25.5kg
Explanation:
The gravitational force equivalent, or, more commonly, g-force, is a measurement of the type of force per unit mass – typically acceleration – that causes a perception of weight, with a g-force of 1 g equal to the value of gravitational acceleration on Earth, g, of about 9.8 m/s².
Mass, m = [tex]\frac{Force}{acceleration due to gravity}[/tex]
[tex]mass,m=\frac{F}{g} = \frac{250}{9.8}= 25.5 kg[/tex]
nếu tăng khoảng cách giữa hai điểm lên 4 lần thì lực tương tác tĩnh điện giữa chúng sẽ
Answer:
điện giữa chúng s
Explanation:
Calculate the acceleration of the two masses shown in the picture above.
A. 0.77 m/s^2
B. 3.92 m/s^2
C. 8.62 m/s^2
D. 5.91 m/s^2
Hello!
We can begin by summing the forces acting on each mass. (Tension is CONSTANT because the string is both frictionless and massless).
On the 3 kg block: (Ignore forces acting in the vertical direction since there is no motion in that axis)
∑F = -M₁gsinФ + T
On the 8 kg block:
∑F = -T + M₂g
Sum the forces:
∑F = -M₁gsinФ + T -T + M₂g
∑F = -M₁gsinФ + M₂g
Divide by both masses to get the acceleration:
[tex]a = \frac{-M_1gsinФ + M_2g}{m_1+m_2}[/tex]
Plug in values: (g = 10m/s²)
[tex]a = \frac{-(3)(10)(sin30)+8(10)}{3+8} = 5.91 m/s^2[/tex]
What two things form ionic bonds
Answer:
ionic bonds are formed between cations and anions
Explanation:
A cation is formed when a metal ion loses a valence electron while an anion is formed when a non-metal gains a valence electron. They both achieve a more stable electronic configuration through this exchange.
An object is moving 45 m/s and a mass of 34 kg , What is the kinetic energy?
Answer: KE = 34.425 kJ
Explanation:
KE = (1/2) mv^2
KE = (0.5)*(34kg)(45m/s)^2
KE = (0.5)*(34kg)(2025m^2/s^2)
KE = 34425 kg*m^2/s^2
1 Joule = 1 kg*m^2/s^2
KE = 34.425 kJ
Sue and Jenny kick a soccer ball at exactly
the same time. Sue’s foot exerts a force of
52.7 N to the north. Jenny’s foot exerts a
force of 91 N to the east.
a) What is the magnitude of the resultant
force on the ball?
Answer in units of N. b) What is the direction of the resultant force
(measured from East)?
Answer in units of ◦
.
a)
Answer:
Using Pythagorean Theorem.
[tex]F_{R} = \sqrt{Fn^{2} + Fe^{2} } \\\\ F_{R} = \sqrt{52.7^{2} + 91^{2} }\\\\ F_{R} = 105.16N[/tex]
b)
Answer:
[tex]tan^{-1} \frac{opp}{adj} \\ \\ tan^{-1} \frac{52.7}{91} \\ \\ = 30.08^{o}[/tex]
The resultant force of the two forces which are acting perpendicular to each other is 105.15 N and the direction is 59.91 ° from east.
What is force?Force is an external agent acting on a body to change it from the state of motion or rest. If two forces acting on a body and both are applied in the same direction, the resultant force will be the sum of two forces in magnitude.
If the two forces are in opposite directions, then the resultant force will be the substracted value of their magnitude. If one force is to the north and other is to the east, then they are perpendicular to each other.
Hence, to find the resultant force we can use the Pythagoras theorem for right angled triangle. The hypotenuse will be the resultant force.
Resultant force = √ (52.7² + 91² )
= 105. 15 N.
The direction of the force = Tan ⁻¹ (91 / 52.7 )
= 59.91 ° from east to north.
Hence, the resultant force is 105.15 N with a direction of 59.91 ° from east.
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