Answer:
Determine the volume of a human body to use the mass and density of water displaced to calculate the volume of the water displaced.
Answer:
According to me the volume of a human body can me determined by means of the displacement method
Explanation:
if you immerse you body in a drum of water of a known volume, the water displaced is equal to your volume
If the mass of an object is 5 kg and the velocity is 8 m/s, what is the momentum?
Answer:
40 kg•m/s
Explanation:
momentum (p) = mass (kg) × velocity (m/s)
Question 9 of 10
Which of the following is equal to the area under a velocity-time graph?
A. Velocity
B. Displacement
C. Force
D. Accelertion
SUBMIT
Displacement is equal to the area under a velocity-time graph.
how many grams of CaCo3, will react with dil HCL to produce 75gm of Co2 ?
Answer:
100g is correct answer.
Answer:
100 grams
Explanation:
CaCO3 ➡️ CaO + CO2
pls mark brainlies!
differentiate between air pressure and liquid pressure in table .
Air pressure or atmospheric pressure is the pressure as the force exerted by the collisions of particles in the air.
The key difference between air pressure and liquid pressure is that air pressure allows the gaseous state of matter to be compressible, whereas liquid pressure makes a liquid incompressible
Answer:
Air pressureAtmospheric pressure, also known as barometric pressure, is the pressure within the atmosphere of Earth. The standard atmosphere is a unit of pressure defined as 101,325 Pa, which is equivalent to 760 mm Hg, 29.9212 inches Hg, or 14.696 psi.
Liquid pressureLiquid pressure is the increase in pressure at increasing depths in a liquid. This pressure increases because the liquid at lower depths has to support all of the water above it. We calculate liquid pressure using the equation liquid pressure = mass x acceleration due to g density x depth in fluid.
An engineering company needs to solve a design problem.
It is designing a high-speed train to transport passengers
between Boston and Atlanta.
Which statement is a criterion for this project?
O A. The train must not take more than six years to build.
B. The train must not have wheels with bearings that need
lubrication,
O C. The train must cost less than $150 million to design.
D. The train must be able to maintain a speed of 250 km/h.
The engineering company must consider the speed of the train in the design.
The correct answer is option D.
To design a high speed train to transport passengers between Boston and Atlanta, the engineering company must include the following design criterion in the project:
the speed of the train: this must be high in order to satisfy the high-speed criterion in the statement of the problem.Thus, the only statement in all the given options that considered speed of the train is option D.
"D. The train must be able to maintain a speed of 250 km/h."
Learn more here: https://brainly.com/question/16173068
Answer:
The train must provide a smooth ride for passengers between bosten and atlanta
Explanation:
the value of mass of a body is everywhere
Explanation:
The value of mass of a body is not same everywhere.
Because it depends on gravity and the gravity isn't same at every places.
Answer:
Mass is the quantity of matter contained in a body, while weight is the force by which the body is pulled to the earth's center. Mass is an intrinsic property of a body, as it remains the same everywhere in the universe. Weight is variable due to change in the magnitude of the gravitational force applied by the earth.
Help meh in this question plzzz
The Moment of Inertia of the Disc is represented by [tex]I = \frac{15}{32}\cdot M\cdot R^{2}[/tex]. (Correct answer: A)
Let suppose that the Disk is a Rigid Body whose mass is uniformly distributed. The Moment of Inertia of the element is equal to the Moment of Inertia of the entire Disk minus the Moment of Inertia of the Hole, that is to say:
[tex]I = I_{D} - I_{H}[/tex] (1)
Where:
[tex]I_{D}[/tex] - Moment of inertia of the Disk.[tex]I_{H}[/tex] - Moment of inertia of the Hole.Then, this formula is expanded as follows:
[tex]I = \frac{1}{2}\cdot M\cdot R^{2} - \frac{1}{2}\cdot m\cdot \left(\frac{1}{2}\cdot R^{2} \right)[/tex] (1b)
Dimensionally speaking, Mass is directly proportional to the square of the Radius, then we derive the following expression for the Mass removed by the Hole ([tex]m[/tex]):
[tex]\frac{m}{M} = \frac{R^{2}}{4\cdot R^{2}}[/tex]
[tex]m = \frac{1}{2}\cdot M[/tex]
And the resulting equation is:
[tex]I = \frac{1}{2}\cdot M\cdot R^{2} -\frac{1}{2}\cdot \left(\frac{1}{4}\cdot M \right) \cdot \left(\frac{1}{4}\cdot R^{2} \right)[/tex]
[tex]I = \frac{1}{2} \cdot M\cdot R^{2} - \frac{1}{32}\cdot M\cdot R^{2}[/tex]
[tex]I = \frac{15}{32}\cdot M\cdot R^{2}[/tex]
The moment of inertia of the Disc is represented by [tex]I = \frac{15}{32}\cdot M\cdot R^{2}[/tex]. (Correct answer: A)
Please see this question related to Moments of Inertia: https://brainly.com/question/15246709
Answer:
Help meh in this question
Explanation:
29. Convert 2.922 x 10-14 to a standard number.
Since the exponent is negative, move the decimal point to the left (backward).
0.000 000 000 000 029 22
Hey any physicist or engineer around. am giving brainliest to anyone who will answer this question.
Answer:
N = 167 Newtons
R = 727 Newtons
Explanation:
i) For static equilibrium, moments about any convenient point must sum to zero.
A moment is the product of a force and a moment arm length. Only the force acting perpendicular to a moment arm passing through the pivot point makes a moment.
ii) I will ASSUME the two moment arms are 0.05m and 0.15 m
CCW moments about the fulcrum are
190 N(0.2 m) + 280 N(0.05 m) = 52 N•m
CW moments are (N)N(0.15 m + 90 N(0.3 m) = 27 + 0.15N N•m
For static equilibrium, these must be equal
27 + 0.15N = 52
0.15N = 25
N = 166.6666666...
Sum moments about N to zero
(Same as saying CW and CCW moments must balance)
190(0.2 + 0.15) + 280(0.05 + 0.15) - R(0.15) - 90(0.3 - 0.15) = 0
R = 726.6666666...
We could verify this by summing vertical forces to zero.
R - 190 - 280 - 166.666666 - 90 = 0
R = 726.6666666...
Denial cycled at 6 mph for 0.8 h. Then he jogged at 2 mph for
1.2 hours. What was Denial's average speed for the total
distance?
mph
Average speed is difined as the total distance travelled divided by the total time required to cover the distance. Mathematically, it is expressed as:
[tex]Ave. Speed = \frac{Total distance }{Total time}[/tex]
To obtain the average speed of Daniel, we shall determine the distance travelled in each case. This is illustrated below:
Case 1:Speed 1 (S₁) = 6 mph
Time 1 (t₁) = 0.8 h.
Distance 1 (D₁) =?[tex]Speed = \frac{Distance}{Time} \\\\S_{1} = \frac{D_{1}}{t_{1}} \\\\6 = \frac{D_{1}}{0.8}[/tex]
Cross multiply
D₁ = 6 × 0.8
D₁ = 4.8 mileCase 2:Speed 2 (S₂) = 2 mph
Time 2 (t₂) = 1.2 h.
Distance 2 (D₂) =?[tex]S_{2} = \frac{D_{2}}{t_{2}}\\\\2 = \frac{D_{2}}{1.2}[/tex]
Cross multiply
D₂ = 2 × 1.2
D₂ = 2.4 mileNext, we shall determine the total time. This can be obtained as follow:
Time 1 (t₁) = 0.8 h.
Time 2 (t₂) = 1.2 h.
Total time (T) =?T = t₁ + t₂
T = 0.8 + 1.2
T = 2 hNext, we shall determine the total distance. This can be obtained as follow:
Distance 1 (D₁) = 4.8 mile
Distance 2 (D₂) = 2.4 mile
Total distance (D) =?D = D₁ + D₂
D = 4.8 + 2.4
D = 7.2 mileFinally, we shall determine the average speed of Daniel. This can be obtained as follow:
Total time = 2 h
Total distance = 7.2 mile
Average speed =?[tex]Ave. speed = \frac{Total distance }{Total time} \\\\Ave. speed = \frac{7.2 }{2}[/tex]
Average speed = 3.6 mphTherefore, the average speed of Daniel is 3.6 mph
Learn more: https://brainly.com/question/680492
Two falling inflated balls of different masses
land at the same time.
Answer:
Đương nhiên quả bóng do người thổi vào thì nặng hơn quả bóng dùng bơm bơm vì:
+ Quả bóng bơm thành phần chính là oxy, còn bóng thổi thành phần chính là CO2. CO2 đương nhiên nặng hơn oxy rồi
+ Khí do người thổi chứa rất nhiều hơi nước so với không khí nên cũng nặng hơn
+ Quả bóng xẹp đương nhiện nhẹ hơn quả bóng được bơm đẩy không khí vì không khí có khối lượng mà. Tuy nhiên sự nặng hơn này rất không đáng kể. Phải có những cân siêu chính xác và độ chia nhỏ mới thấy điều này.
Explanation:
If the toy car weighs 250g and has a kinetic energy of 2.0 J, what is its velocity
Explanation:
Kinetic energy (J) = 2j
mass= 250g
velocity=?
1kg=1000g
mass= 250/1000
mass=0.25kg
Kinetic energy (J) = ½ x mass (kg) x [velocity]² (m/s)
2=1/2 × 0.25× [velocity]²
2=0.125× [velocity]²
[velocity]² = 2/0.125
[velocity]²=16
velocity= (16)^1/2
velocity= 4 m/s
explain fundamental quantities in
physics
Answer:
fundamental quanties are mass , time, length, temperature , amount of substance and luminous intensity. All other physical quantity are derived quantity and be made from fundamental quanties.
Explanation:
hope it helps u
Answer:
The other person answered
Explanation:
Explain why selling cereal by mass rather then by volume be more fair to customers
Answer:
Simple, there could be air in the package and volume would record that, whereas mass would count the mass of the cereal and discount the air.
Two unequal masses m and 2m are attached to a thin bar of negligible mass that rotates about an axis perpendicular to the bar. When m is a distance 2d from the axis and 2m is a distance d from the axis, the moment of inertia of this combination is "I". If the masses are now interchanged, the moment of inertia will be:_______
A) 2/3 I,
B) I ,
C) 3/2 I ,
D) 2 I ,
E) 4 I
Answer:
C) 3/2 I
Explanation:
Initial condition
I = m(2d)² + 2m(d²)
I = 4md² + 2md² = 6md²
swap masses
I' = 2m(2d)² + m(d²)
I' = 8md² + md² = 9md²
I'/I = 9md²/6md² = 3/2
I' = 3/2I
The most suitable unit for expressing nuclear radius is
A) micro B) nanometre
C) fermi D) angstrom
Answer:
Fermi is used to express nuclear radius
Answer:
the most suitable unit for expressing nuclear radius is Fermi.
What is the velocity of an object that moves from 73 m to 62 m in 15 s?
Answer:
Below
Explanation:
You can use this formula to find the velocity of an object
velocity = displacement / change in time
For this problem, we need to find displacement first
To find displacement all you need to do is find the difference between the two distances!
So our displacement here would be
73 - 62 = 11 m
Now that we have displacement we can find velocity
velocity = 11 / 15
= 0.733333....
= 0.73 m/s
Hope this helps! Best of luck <3
The velocity of an object that moves from 73 m to 62 m in 15 s is 0.73 m / s.
What is velocity?When an item is moving, its velocity indicates how quickly its location is changing as seen from a specific point of view and as measured by a specific unit of time.
If a point travels a specific distance along its path in a predetermined amount of time, its average speed throughout that time is equal to the traveled distance divided by the travel time. For instance, a train traveling 100 km in two hours is moving at an average speed of 50 km/h.
Given:
The distance of the object = 73 m to 62 m,
The time taken by the object, t = 15 s,
Calculate the displacement of the object = 73 - 62 = 11 m
Calculate the velocity by the formula given below,
[tex]v = d /t[/tex]
v = 11 / 15
v = 0.73 m / s
Therefore, the velocity of an object that moves from 73 m to 62 m in 15 s is 0.73 m / s.
To know more about velocity:
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Encontrar el peso de un elefante cuya masa es de 4500kg. Recordar que la gravedad es de 9.8m/s2
la respuesta es 459.183673 kg s2 / m
Answer:
44,100 N
Explanation:
4500(9.8) = 44,100
A rocket of mass 40,000kg propelled by a force 10⁶N acquires a speed of 3000m/s. determine the power extended
Answer:
3×10⁹ W
Explanation:
Power = work / time
Power = force × distance / time
Power = force × velocity
P = Fv
P = (10⁶ N) (3000 m/s)
P = 3×10⁹ W
what are the newtons law and their formulas
Answer:
Newton's second law of motion states that the acceleration ( a) experienced by an object is directly proportional to the net force ( Fnet) experienced by the object and inversely proportional to the mass of the object. In equation form, it could be said that a = Fnet/m. The net force is the vector sum of all the individual force values.
Explanation:
Aristotle said that if you dropped a large object and a smaller object that the larger
object would hit the ground first.
We now know that that is___
not true.
true
Answer: not true
Explanation: mass < weight
If I have 8.2 milliwatts of power and I need to convert into kilowatts my
answer should be?
Answer:
8.2 milliwatts = 8.2 x 10⁻³ watts = 8.2 x 10⁻⁶ kilowatts
Explanation:
There are 1000 milliwatts per watt and 1000 watts per kilowatt, therefore we need to move the decimal point 6 places to the left to convert mW to kW
Write the following as full (decimal) numbers with standard units metric (SI) units:
(For example, 80.2 kA = 80,200 A)
651.9 mm
71 V
910 mg
30.0 ps
22.5 fm
2.00 gigavolts
Answer:
Explanation:
651.9 mm = 0.6519 m
71 V = 71 V
910 mg = 0.000910 kg
30.0 ps = 0.000 000 000 030 0 s
22.5 fm = 0.000 000 000 000 022 5 m
2.00 gigavolts = 2 000 000 000 V
A sound that is perceived as twice as loud requires
Select one:
O a. four times the intensity,
O b. twice the intensity.
C
ten times the intensity
d. one hundred times the intensity.
Answer:
C.ten times the intensity.
A ball is rotating on a circle of radius 0.500m at a constant ratr of 200 rev/min.Find the speed and acceleration of the ball.
Answer:
Solution
verified
Verified by Toppr
The radius of the tire is r=0.500m. The speed of the stone on its outer edge is
v
t
=
T
2πr
=
(60.0s/200rev)
2π(0.500m)
=10.5m/s
and its acceleration is
a=
R
v
2
=
0.500m
(10.5m/s)
2
=219m/s
2
inward.
Explanation:
Consider the mass-on-a-spring system as shown in the figure below. The spring has a spring constant of 1.81e+3 N/m, and the block has a mass of 0.988 kg. There is a constant force of kinetic friction between the mass and the floor of 1.79 N. Starting with the spring compressed by 0.172 m from its equilibrium position, how far will the block travel once it leaves the spring? (Assume that block leaves the spring at at the spring's equilibrium position, marked x=0 in the figure.
K1Answer:
s= 6.5cm
Explanation:
Point 1: just right before the block leaves the spring
Point 2: the block has v2=0 (stops moving)
Apply Kinetic-Work Theorem:
K1 + U1 + Wother = K2 + U2
K1=0
U1= 1/2×k×x² (k= 1.81e+3 N/m and x= -0.172 m)
Wother = F×s= 1.79×s
K2=0
U2=0
=> s= 6.5cm
This is my attempt to solve. Let me know if this isn't right
If Leslie has a hang time of 0.2 seconds, what distance did she jump?
Answer:
um.......I don't know soory
A boy with a mass of 45 kg runs towards a stationary trolley with a total mass of 30 kg. The boy then jumps on the trolley and the trolley starts to move.
a) Explain why the trolley starts to
move after the boy jumps on it.
b) Calculate the magnitude of the
velocity of the trolley after the boy jumps on it.
anyone here cold helps me to solve and explain the answer... thanks in advance
Answer:
The trolley moves because a force of exertion is pushed onto it when the boy launches himself onto it. It also moves in a direction, so velocity is applied to it.
The velocity goes from stand-still to something. Also, to find velocity, I think acceleration and time are 2 constants that are needed to find velocity, which is not present in the question.
Sorry if this is not the answer you wanted.. I just gave a basic guess as to what I think the answer is. I just started to learn physics.
Explanation:
if you think that Horoscopes are Science or Pseudo-Science and give your reason
Answer:
Pseudo science
Explanation:
Astrology has not demonstrated its effectiveness in controlled studies and has no scientific validity, and is thus regarded as pseudoscience.
Um caminhão de entregas transporta produtos de tamanho e peso elevados, o que requer o uso de máquina simples para facilitar a descarga (observe a figura abaixo).
Que máquina simples é representada por essa figura?
(A) Roldanas.
(B) Alavancas.
(C) Rodas e eixos.
(D) Plano inclinado.
