A wooden cylinder has a density of 4 g/cm3 and a mass of 48 cm3. What is the volume of the wooden cylinder?
Answer:
Volume is 12 cm³
Explanation:
[tex]volume = \frac{mass}{density} \\ [/tex]
mass » 48 g
density » 4 g/cm³
[tex]volume = \frac{48}{4} \\ \\ = 12 \: {cm}^{3} [/tex]
What is the relation between pressure and area?
Answer:
Pressure is inversely proportional to Area ...
P = F/A
Answer:
Hence, pressure is inversely proportional to the area of contact. Additional information: In the SI unit system, the unit of force is Newton and the unit of area is square-meter. Atmospheric pressure can be defined as the pressure given by the atmosphere of earth near the surface or at sea level.
What is the acceleration of a bike that goes from rest to 40m/h in 2 second?
[tex]\\ \tt\longmapsto Acceleration=\dfrac{v-u}{t}[/tex]
[tex]\\ \tt\longmapsto Acceleration=\dfrac{40-0}{2}[/tex]
[tex]\\ \tt\longmapsto Acceleration=\dfrac{40}{2}[/tex]
[tex]\\ \tt\longmapsto Acceleration=20m/s^2[/tex]
What does the term "heat capacity" refer to? Question 2 options: The amount of heat energy needed to raise the temperature of a unit mass of a material one degree A ratio of the amount of heat a material will absorb to the amount of heat it immediately releases The amount of heat that must be applied to a solid to convert it to a liquid The amount of heat that a liquid can absorb until the particles speed up enough to become a gas
Answer:
Heat capacity is the ratio of the amount of heat energy transferred to an object to the resulting increase in its temperature. Molar heat capacity is a measure of the amount of heat necessary to raise the temperature of one mole of a pure substance by one degree K.
Explanation:
hope this helps <3
Hi hello
What is strong nuclear force ?
Answer:
Strong Nuclear Force: It is the attractive force between protons and neutrons in a nucleus.It is charge- independent and acts equally between a proton and a proton, a neutron and a neutron, and a proton and a neutron.
Answer:
In nuclear physics and particle physics, the strong interaction is one of the four known fundamental interactions, with the others being electromagnetism, the weak interaction, and gravitation
Explanation:
thank for points
do all living cells require glucose for survival
Answer:
All living cells require glucose for survival
let me know if correct
Answer:
hmmmmmmmmmmmmmm
Explanation:
I think so
What is the correct definition of speed?
A. time (hours or seconds)
B. time per distance (hours per mile or seconds per meter)
C. distance per time (miles per hour or meters per second)
Answer:
C
Explanation:
The correct definition is distance / time, although teachers like to mix you up sometimes. A question like "How many minutes per mile does it take to go 3miles in 20 minutes?" In this question, the units are upside down.
The standard answer is what is the rate of speed when when 3 miles are covered in 2 hours.
Here the answer is 3/2 = 1.5 miles / hour which is the standard way of writing speed or rate. distance / time.
velocity of car is 500 m/s and train 200 m/s when will they meet.
Answer:
If they are start traveling in opposite direction from a point then they will never meet
which unit of measure is the correct SIunit to use in measuring the mass of a boulder?
o tons
o kilograms
o pounds
o ounces
Answer:
tons
Explanation:
1) How many valence electrons are in the alkaline earth metal family? Do
they form cations or anions?
A)
1 valence electron, cations
B)
1 valence electron, anions
C)
2 valence electrons, cations
D)
2 valence electrons, anions
Answer:
Below
Explanation:
Alkaline earth metals have 2 valence electrons, which means that when they react with other elements, they will lose rather than gain their 2 electrons making them positive ions or cations.
So the correct answer to your question would be....
C) 2 valence electrons, cations
Hope this helps! Best of luck <3
A liquid has a
constant temperature
definite shape
crystal structure
definite volume
The right answer is : Definite Volume
You must be the change you wish to see in the world
1. °C= (°F-32) X 5/9. what will be the answer?
2. °F= 9/5 (°C)+32
3. °K= °C+273
4. D= m/V
Answer:
F=9/5(°C)+32
Explanation:
Let's take an example
Take 100°C.[tex]\\ \sf\longmapsto \dfrac{9}{5}(100)+32[/tex]
[tex]\\ \sf\longmapsto 9(20)+32[/tex]
[tex]\\ \sf\longmapsto 180+32[/tex]
[tex]\\ \sf\longmapsto 212°F[/tex]
would grams be a good measurement for the mass of a car?
What is the final velocity of a dragster that travels 400 meters from the start line
to the finish line in 5 seconds? *
Answer:
80m/s
Explanation:
The formula for velocity is [ v = s/t ] where s = displacement and t = time.
= 400/5
= 80m/s
Best of Luck!
two spherical objects one an insulation conductor and the other a conductor.negative charges are introduced at point A in each case .which would be the position of the charges.explain your observation.
Answer:
The charge move closer to conductor it it has any charge otherwise it remains at its place
An apple weighing 1 N falls through a distance of 1m. How much work is done
on the apple by the force of gravity?
Answer:
W = F × d
W = 1 × 1
W = 1 Joule
step by step explanation
An apple is having a force of 1 N and it travels to a distance of 1 m then the work done on the apple by the force of gravity will be equal to 1 J.
What is Work?Work is a physics term used to describe the transfer of energy that occurs when an object changes above a distance because of an external force, at least some of which is given in the vector of the dislocation. The element of the strong acting all along the path multiplied by the length of the path can be used to calculate work if the force is constant.
Mathematically, this idea is expressed as W = fd, where W is the effort and f is the force multiplied by d, the distance. Work is completed whenever the pressure is applied at an angle with regard to displacement.
As per the given information in the question,
Force, f = 1 N
Distance, d = 1 m
Then, the work done will be,
W = fd
W = 1 × 1
W = 1 J.
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an aircraft is traveling along a runway at a velocity of 25m/s. It accelerates at a rate of 4m/s for a distance of 750m before taking off. calculate it's take-off speed.
Answer:
v = 81.394102980499 m/s
Explanation:
v = sqr(u^2 + 2as)
v - final velocity
u initial velocity
a acceleration
s displacement
(c) What are the factors of work? Also write their relation with work.
Answer:
Explanation:
Appreciation for your work.Good relationships with colleagues.Good work-life balance.Good relationships with superiors.Company's financial stability.Learning and career development.Job security.Attractive fixed salary.Good relationships with colleagues. Good work-life balance. Good relationships with superiors. Company's financial stability.
If an object is projected horizontally from a height of 5 m with an initial velocity of 7 m/s, what is the value of x^0?
x0=−9.8 m/s2
x subscript 0 baseline equals negative 9.8 m per s squared
x0=0
x subscript 0 baseline equals 0
x0=5
x subscript 0 baseline equals 5
x0=7
The horizontal displacement (x₀) of the object is 7 m.
The given parameters;
height of the object projection, h = 5 minitial horizontal velocity of the object, uₓ = 7 m/sThe vertical displacement equation of the object is given as;
h = vt + ¹/₂gt²
where;
v is the initial vertical velocity = 0
The time of motion is calculated as;
5 = 0 + (0.5 x 9.8)t²
5 = 4.9t²
[tex]t^2 = \frac{5}{4.9} \\\\t^2 = 1.02\\\\t = \sqrt{1.02} \\\\t = 1 \ s[/tex]
The horizontal displacement of the object is calculated as;
X₀ = uₓt
X₀ = 7 x 1
X₀ = 7 m
Thus, the horizontal displacement (x₀) of the object is 7 m.
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Why are there only two elements in the first period of the periodic table?(1 point)
because the first two elements both start with H and are grouped together
because the next elements have other things in common and they need to be arranged together
because only two electrons can fit in the first orbit around the nucleus, and each period on the table is organized by number of orbits
because each row increases in atomic mass by a specific number, so anything over five is in the second row
Answer:
because each row increases in atomic mass by a specific number, so anything over five is in the second row.
Why is the perfect mechine is not possible in the real life?
Answer:
Because the mechanical advantage of the machine is affected by friction and weight but velocity ratio is not. So, mechanical advantage is less than velocity rate. Thus, the machine's efficiency is less than 100% and can't be a perfect machine
Convert: 78 mg to cg
Answer:
7.8 cg
Explanation:
7.8 cg
Answer:
7.8
Explanation:
1 cg= 10 mg
divide 78 cg to 10
so your answer will be 7.8 cg
I=2cm u=12cm o=0.5cm. What is the Focal length? and find u also
Answer:
Focal length is 4 cm
Explanation:
h2 = 2 cm (Erect image)
v = - 12 cm (Erect image)
h1 = 0.5 cm
m = v/u = h2/h1
-12/u = 2/0.5
u = -3 cm
lens formula : 1/v – 1/u = 1/f
1/-12 – 1/-3 = 1/f
(-1 + 4)/12 = 1/f
F = 4 cm
Tell me that all answers plz
No spammers
Lesson: simple machine
Great answer will be brainliest answer
Answer:
a. Value of MA is always lesser than VR because mechanical advantage decreases due to the friction and weight of moving parts of the machine.
b.Efficiency of lever is never 100 or more because it will always lose some tiny (sometimes immeasurable) percentage of power due to the lever bending.
c.Because it helps to apply more torque.
d.Because the upright snip has the blades rotated 90° from the handles.
e.because some of the input work is used to overcome friction.
f.because the load arm is always longer than effort arm.
g.because the effort arm is always longer than load arm of these Lever.
h. because if the effort distance is greater than load distance there will be magnification of force and the metals could easily cut.
i. because the wheelbarrow's wheel and axle help the wheelbarrow to move without friction thus making it easier to push or pull.
What phrase describes a scientific law
What is the velocity of a rocket that
goes 75 km north in 25 seconds?
Answer:
3
Explanation:
v/s
75km/25s
v=3 km/s
Compare and Contrast the two main branches of physical science. How are they the same? How are they different?
Which terms does velocity describe?
A. speed and momentum
B. gravity and direction
C. speed and direction
Answer:
c
Explanation:
Wan and Nurul sat on a see-saw. The see-saw is imbalanced because Wan’s mass is 45 kg while Nurul’s mass is only 30 kg. Suggest how Nurul can balance the see-saw.
We have that the see-saw will be balance if a weight of [tex]x=15kg[/tex] is added to Nural's side of the see-saw
[tex]x=15kg[/tex]
From the Question we are told that
Wan’s mass is [tex]M_w=45 kg[/tex]
Nurul’s mass is [tex]M_n= 30 kg.[/tex]
Generally
The Will be balance when the weight on both sides of the see-saw are equal
[tex]M_w=M_n+x[/tex]
[tex]45=30+x[/tex]
[tex]x=45-30[/tex]
[tex]x=15kg[/tex]
In conclusion
The see-saw will be balance if a weight of [tex]x=15kg[/tex] is added to Nural's side of the see-saw
[tex]x=15kg[/tex]
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What simple machines combine to make a shovel which is a compound
machine?
A wheel and axle and lever
B. lever and pulley
C. inclined plane and wheel and axle
D. Wedge and lever
