Answer: Yes, on many slate-roofed homes as temperatures change, such as cooling at night or heating during the day, thermal expansion or contraction of the slates may cause movement that in turn causes snapping, popping, or cracking noises, even bangs and clanks or clicks from the roof.
Explanation:
Answer:
because of its mealting
Explanation:
hope it helps you
A bullet of mass 20g is horizontally fired with a velocity of 150m/s from a pistol of mass 2 kg. What is the
recoil velocity of the pistol?
Answer:
m1 = 20g (= 0.02 kg)
Mass of pistol, m2 = 2 kg
Initial velocity of the bullet (u1) and pistol (u2) = 0
Final velocity of the bullet, v1 = +150m s-1
Let v be the recoil velocity of the pistol.
Total momentum of the pistol and bullet after it is fired is
= (0.02 kg x 150 m s-1) + (2 kg x v m s-1)
= (3 + 2v) kg m s-1
Total momentum after the fire = Total momentum before the fire
3 + 2v = 0
→v = -1.5 m/s
write down the freezing and boiling point of alcohol
Is feeling chilly and cold the same thing?
Answer:
The term “chills” refers to a feeling of being cold without an apparent cause. You get this feeling when your muscles repeatedly expand and contract and the vessels in your skin constrict. Chills can occur with a fever and cause shivering or shaking. Your body chills can be constant.
Explanation:
Hope this helps , also put in your own words !!
To have a change in acceleration there has to be a change in velocity.
To have ANY acceleration, there has to be a change in velocity.
Why does it takes a long time to heat a room with a high ceiling?
Answer:
High ceilings make a room feel large and open, but they can be difficult to cool and heat. Because hot air rises, the challenge becomes trying to keep the hot air where you want it and preventing if from being wasted where you don't.
Explanation:
:)
Answer:High ceilings make a room feel large and open, but they can be difficult to cool and heat. Because hot air rises, the challenge becomes trying to keep the hot air where you want it and preventing if from being wasted where you don't
Explanation:
A man is crossing a river of width 100 m on a motorboat. The velocity of the motor boat is 4 m/s eastward and the velocity of the water current is 3 m/s northward. What is the resultant velocity of the boat and how much time will it take for the man to reach the other shore of the river?
Answer:
The resultant velocity of the boat = 5 m/s
The time it will take for the man to reach the other shore of the river = 25 s
Explanation:
width of river = 100 m
The velocity of the motorboat = 4 m/s eastward
The velocity of the water current = 3 m/s northward
The resultant velocity of the boat is:
R^2 = 4^2 + 3^2
= √ (4^2) + (3^2)
= √16 + 9
=√25
= 5 m/s
The time it will take for the man to reach the other shore of the river is:
d = 100 m
v = 4 m/s
t = d / v
t = 100 / 4
t = 25 s
A motorcycle has a weight of 2000N. What is the mass of the motorcycle?
Answer:
One kilogram is equal 9.81 Newton’s. To convert Newton’s to kg you have to divide Newton’s by kg. In this scenario it would have to be 2000/9.81 which is 203.87 kg.
Answer:
204
Explanation:
Brandy has built a computer model of a weather system. She has included information about bodies of water, the Sun, and the atmosphere. Brandy decides to decrease the amount of atmospheric water vapor in her model. How will this likely affect the precipitation in her model?
A.
There will be less precipitation.
B.
There will be more precipitation.
C.
It will rain constantly.
D.
The precipitation will not change.
Answer:
there will be less precipitation because there is less water vapour
Explanation:
if a load of 24n is moved by applying an effort of 6n to the machine what is the m.a of the machine
Answer:
4N
Explanation:
[tex]mechancal \: advantage = \frac{load}{effort} \\ ma \: \: \: \: \: = \frac{24}{6} \\ mechanical \: advatage = 4 \: newton[/tex]
You pull a wagon up a 100m hill at 2m/s and get in and roll down the other side of the same
100m hill at 10m/s.
a. How much time does this entire trip take?
What universal standard is the basis of the atomic mass unit?
the oxygen-16 atom
the carbon-12 atom
the chlorine-35 atom
the proton
What effect charged objects have on uncharged objects
Answer:
Uncharged objects: In spite of what the standard says, an uncharged object will not be attracted or repelled from a charged object. Instead, the charged object will cause the uncharged object to become charged, with a positive charge on one side and a negative charge on the other side. This process is called induction.
Explanation:
Which phrase is the best definition of matter?
A. The smallest piece of a chemical compound that retains the
properties of the compound
B. A substance that can change in both volume and shape
o
C. Something that occupies a volume of space and also has mass
D. A substance that cannot be divided into smaller pieces
Answer:
C is the correct answer
please keeps as Brainly list
Why does Mila’s phone start playing music again when she plugged her phone into the battery pack ?
Answer:
cause it got charged
Explanation:
A circuit featuring multiple paths through which current can flow is best classified into which category?.
Answer:
A parallel circuit.
In a series circuit the current must flow thru the resistances in any particular branch.
In the 5.12 Lab: Design a Thermos 1 (k12) HELLPPPP PLEASEEEE!!!!
Did each thermos work as you expected it to? What would you change to improve your design?
In designing a thermos, it is important to minimize heat loses or gain by convection, conduction and radiation.
What is a thermos?A thermos is a container which is designed such that it keeps hot substances hot and cold substances cold.
A thermos can be designed to keep liquids or solids.
In designing a thermos, it is important to minimize heat loses or gain by convection, conduction and radiation.
Insulating materials are used to prevent heat loss by conduction, and convection.
And a vacuum layer is included design to minimize heat loss by radiation.
Learn more about thermos at: https://brainly.com/question/11700429
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Which one is the answer please
If one object has a greater mass than another
A. More force is required to movie it.
B. Less force is required to move it
C. The acceleration is greater
D. It has less inertia
Answer:
more force to move it
Explanation:
i would say based on mass of course itll be more.
Answer:
A
Explanation:
The heavier something is, it needs more force to push it
5x-2=3 -5 + 4y = 9 solve the system of equiations
Answer:
[tex]x=1,y=\frac{7}{2}[/tex]
Explanation:
Given the following question:
[tex]5x-2=3[/tex]
[tex]-5+4y=9[/tex]
To solve a system of equations we must start by solving the first equation for x, and then we substitute the value of x in in the second equation and then solve for y to find the value of both variables.
[tex]5x-2=3[/tex]
[tex]-5+4y=9[/tex]
[tex]-2+2=0[/tex]
[tex]3+2=5[/tex]
[tex]5x=5[/tex]
[tex]5x\div5=x[/tex]
[tex]5\div5=1[/tex]
[tex]x=1[/tex]
Substitute and solve the second equation:
[tex]x=1[/tex]
[tex]-5+4y=9[/tex]
[tex]-5+5=0[/tex]
[tex]9+5=14[/tex]
[tex]4y=14[/tex]
[tex]4y\div4=y[/tex]
[tex]\frac{14}{4} =\frac{7}{2}[/tex]
[tex]y=\frac{7}{2}[/tex]
Your answers are "x = 1, and y = 7/2."
Hope this helps.
Answer:
x=1 and y=7/2Explanation:
To solve this problem, isolate the term of x from one side of the equation.
5x-2=3 and -5+4y=9
5x-2=3First, add by 2 from both sides.
5x-2+2=3+2
Solve.
3+2=5
Rewrite the problem down.
5x=5
Divide by 5 from both sides.
5x/5=5/5
Solve.
5/5=1
x=1
-5+4y=9First, add by 5 from both sides.
-5+4y+4=9+5
Solve.
9+5=14
4y=14
Divide by 4 from both sides.
4y/4=14/4
Solve.
14/2=7
4/2=2
Rewrite as a fraction.
y=7/2
Dividing is another option.
7/2=3.5
y=7/2
Therefore, the correct answer is x=1 and y=7/2.
I hope this helps you! Let me know if my answer is wrong or not.
Which vector has a y-component with a length of 1?
Answer:
C
Explanation:
Answer:
(C). c
Explanation:
What is the distance between two points on a wave called
Explanation:
Wavelength is the distance between two consecutive and equivalent points on a wave. Wavelength can be quantified by measuring the distance between two equivalent and consecutive points, such as the distance between two peaks or two troughs. The scientific symbol for wavelength is a Greek letter called lambda.
1. If d = 25 m and t = 10 s, what is v?
Answer:
velocity = displacement /time
v= d/t
v= 25/ 10
v = 2.5 m/s
Explanation:
hope this help
The first periodic table was organized by
atomic number
atomic mass
chemical name
chemical symbol
WallyGPX accelerates from 0 m/s to 8 m/s in 3 seconds. What is his acceleration? Is this acceleration higher than that of a car which accelerates from 0 to 30 m/s in 8 seconds?
My Phone is +2348181686682
Scientists have concluded that Earth is at risk of future impacts with meteoroids. What are some criteria that engineers consider when they try to design technology to detect meteoroids and prevent collisions?
Science
By using optical and radio telescopes, the meteoroids are characterized and their shape, rotation and physical composition are determined.
Scientists have considered some criteria to detect the meteoroids and prevent collisions so that earth is protected from their impact. This includes finding the position and size of the meteoroids and so the orbit of the earth could be changed and thus there is possibility for preventing collision.
By using optical and radio telescopes, the meteoroids are characterized and their shape, rotation and physical composition are determined. With the early recognition of the meteoroid movement and their position, the evacuation of people from the particular areas of possible impact can be done.
To learn more about meteoroids, click:
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Help in this and thx for answering it or if it is helpful
Hello people ~
Resolving power of telescope can be increased by increasing
(a) the wavelength
(b) the diameter of objective
(c) the diameter of eyepiece
(d) the focal length of eyepiece
Answer:
The diameter of the objective
Explanation:
Let's see how?
Resolving power be RDiameter be dWavelength be lambda[tex]\\ \rm\rightarrowtail R=\dfrac{d}{1.22\lambda}[/tex]
Hence
[tex]\\ \rm\rightarrowtail R\propto d[/tex]
So if d is more R is more4. Dr. Copus is in charge of the cognition department at the University of Wisconsin-Madison. A new drug named Mem-Reen has become available that might be able to improve people's memories. Dr. Copus puts half of her existing patients on the drug for two weeks while giving the other half of her patients a placebo (a fake drug). She then gives both groups a memory test and compares the scores. Afterwards, Dr. Copus analyzes the scores to determine if the memory drug worked. Independent Variable: _____________________________ Dependent Variable: ___________________________________ Experimental Group: _______________________________ Control Group: _________________________________________ 3 constants: ____________________________________________________________________________________________________________
Answer:
See the answer below
Explanation:
Independent variable: Type of drug (Mem-Reen or placebo)
Dependent variable: memories
Experimental group: The group that was given Mem-Reen
Control group: The group that was given placebo
Constants: Food, hours of sleep, memory test procedures.
The independent variable is an input variable that produces effects on the dependent variable. As the variable is changed, it produces different effects on the dependent variable.
The dependent variable is the actual variable that is measured during an experiment. It is the main purpose of setting-up of an experiment.
The experimental group is also referred to as the treatment group while the control group is the group that does not receive treatment at all or they receive fake treatment/placebo.
Constants are unchanging variables included in experiments. They remain unchanged both in the treatment and the control group, otherwise, the outcome of the experiment will be unreliable.
A group of students investigate the acceleration of ball through a
plastic tube. The apparatus they use is shown in Figure 3.
timer
light gate
Plan an experiment to find out how changing the height of the tube
affects the acceleration of the ball. In your answer, include the
variables that must be kept the same
Answer:
Adam is the name given in Genesis 1-5 to the first human. Beyond its use as the name of the first man, adam is also used in the Bible as a pronoun, individually as "a human" and in a collective sense as "mankind".
Dimension of Impulse in physics