Answer:
(i) V, (ii) F, (iii) F
Explanation:
Se comprueba la veracidad de cada proposición:
(i) Una partícula está en equilibrio cuando se encuentra en reposo.
Respuesta: Según la Primera Ley de Newton, toda partícula está en equilibrio si está en reposo o desplazándose a velocidad constante. Por ende, la proposición es verdadera.
(ii) Una partícula se encuentra en equilibrio, el observador no registra fuerza alguna sobre la partícula.
Respuesta: Según la Primera Ley de Newton, toda partícula está en equilibrio si está en reposo o desplazándose a velocidad constante.
Además, la Segunda Ley de Newton establece que la fuerza neta sobre la partícula como resultado de fuerzas externas es igual a cero. Lo cual quiere decir que una partícula puede estar en equilibrio y estar sometidas a fuerzas externas. En conclusión, la proposición es falsa.
(iii) Un cuerpo que se mueve con rapidez constante se encuentra en equilibrio.
Respuesta: Según la Primera Ley de Newton, toda partícula está en equilibrio si está en reposo o desplazándose a velocidad constante.
La rapidez es la magnitud de la velocidad, para que la velocidad sea constante debe ser constante tanto en magnitud como en dirección. La afirmación no garantiza que la dirección de la partícula sea constante. Por ende, la proposición es falsa.
A water holding tank measures 85 m long, 55 m wide, and 9 m deep. Traces of mercury have been found in the tank, with a concen- tration of 65 mg/L.
What is the total mass of mercury in the tank?
Answer in units of kg.
Answer:
Mass = 2734.875 kg
Explanation:
Given that A water holding tank measures 85 m long, 55 m wide, and 9 m deep.
The volume = 85 × 55 × 9 =
= 42075 m^3
Traces of mercury have been found in the tank, with a concen- tration of 65 mg/L.
1 m^3 = 1000 L
Convert cubic meters to litres.
42075 × 1000 = 42075000 L
From definition of density,
Density = mass ÷ volume.
Substitute the given density and the calculated density into the formula
65 = mass ÷ 42075000
Cross multiply
Mass = 65 × 42075000
Mass = 2734875000 mg
Convert mg to kg
To do that, you will divide the answer by 1000000
2734875000 ÷ 1000000
= 2734.875 kg
what instrument will we use to find liquid volume
Answer:
Volumetric cylinders (would appreciate brainliest
Explanation:
Volumetric cylinders and volumetric flasks are used to measure volume of liquids contained in them. They are calibrated for volume included in them - this is indicated by the marking "IN". The liquid has accurate volume when it reaches the corresponding marking on the scale.
please help with these tysm
a dialogue between two friends discussing about teej
"Holy cow ! Can you believe it, Lakshmi ? ! Here it is almost Shraavana again. Soon the rains will be blowing and the Teej will be biting. Let's sing, dance, and pray together while it's still so nice outside."
"OK, Priya. Great idea. Count me in. Let's go."
While participating in a blood drive at school, Keona learns that blood has a density of 1.06 g/mL. She donates one pint of blood, which is equal to 473.176 mL. What is the mass of the blood Keona donates, to the nearest hundredth of a gram?
Answer:
m≈501.57 g
Explanation:
The density formula is:
d=m/v
Let’s rearrange the formula for m. m is being divided by v. The inverse of division is multiplication, so multiply both aides by v.
d*v= m/v*v
d*v=m
The mass can be found by multiply the density and the volume.
m=d*v
The density is 1.06 grams per milliliter and the volume is 473.176 milliliters.
d= 1.06 g/mL
v= 473.176 mL
Substitute the values into the formula.
m= 1.06 g/mL * 473.176 mL
Multiply. When multiplying, the mL will cancel out.
m= 501.56656 g
Let’s round to the nearest hundredth. The 6 in the thousandth place tells us to round the 6 to a 7 in the hundredth place.
m ≈501.57 g
The mass is about 501.57 grams.
Answer:
501.57 g
Explanation:
I hope this helps
Your new pet kitten is trapped in a ten foot deep hole. You need a contraption to safely rescue your poor animal. How can I solve this problem? please give me a list of ideas thank you.
calculate the pressure if a force of 2n is applied on an area of 2mm²
Answer:
P=1 MPa
Explanation:
P=F/A
P=2N/2mm^2
P=1N/mm^2
P=1 MPa
[tex]\\ \sf\longmapsto Pressure=\dfrac{Force}{Area}[/tex]
[tex]\\ \sf\longmapsto Pressure=\dfrac{2}{0.000002}[/tex]
[tex]\\ \sf\longmapsto Pressure=1000000Pa[/tex]
A bicyclist is traveling 10 m/s with an acceleration of 6 m/s2.
How fast is the bicyclist traveling at the end of 20 seconds?
A
20 m/s
B
26 m/s
C
110 m/s
D
130 m/s
Answer:
The answer is option DExplanation:
From the question we are finding the final velocity of the bicycle
To find the final velocity given the initial velocity , acceleration and time we use the formula
v = u + at
where
v is the final velocity
u is the initial velocity
a is the acceleration
t is the time
From the question
u = 10 m/s
a = 6 m/s²
t = 20 s
Substitute the values into the above formula and solve
That's
v = 10 + 6(20)
= 10 + 120
We have the final answer as
130 m/sHope this helps you.
Answer:B
26m/s
Explanation:
What are some questions engineers should ask when researching a problem?
Who will this help?
How long will it take to get it right?
What a materials can be used to solve the problem?
How much will the project cost?
Answer:
is this a check all that apply or a single answer?
"For an object moving at a constant speed, we would expect to see a position graph with a
Explanation:
The speed of an object is given by the total distance divided by the total time taken.
The position of an object shows its location. If we draw a position- time graph for an object moving at a constant speed, it will look like the attached figure. It means that the object is moving at a steady rate. It is a straight line passing through origin.
A car is going 43m/s and travels 14 m, how
long did it take?
Answer:
Time = 0.3256 sec
Explanation:
Velocity = displacement / time
43=14/t
So the time =14/43
t=0.3256 sec
why does an object appear to be moving faster as it moves away from the axis of rotation
Answer:
I suppose that this is a problem of rotation with constant angular velocity.
This can be answered with arcs.
Suppose that we have a circle of radius R, and an angle A (A expressed in radians)
The length of that arc will be:
L = R*A
Now, a rotating object that rotates at a constant angular velocity, in a time t moves an angle A.
so if this object is moving in a circle of radius R, in the time t the distance traveled is the same that we found above.
L = R*A
Now, if the object moves away from the axis of rotation, we have that the radius of the circle R increases, then also does the value of L (the distance traveled in the time t)
Then, when the object moves away from the axis of rotation, in the same time t, the distance traveled will be higher, which means tath the tangential velocty increased (regardless the fact that the angular velocity is constant)
0.075 L - 9 mL = _____________ L?
3. What is the potential energy of a 8 Newton book sitting on a shelf that is 12 meters high?
Answer:
P = 96 J
Explanation:
Given that,
Weight of the book, W = mg = 8 N
It is placed at a height of 12 m
We need to find the potential energy of the book. The potential energy of an object is given by the formula as follows :
E = mgh
mg = Weight
[tex]E=8\ N\times 12\ m\\E=96\ J[/tex]
So, the potential energy of the book is 96 J.
Scientists measure mass with a(n)
Which of the following is true of the Celsius scale? a. 212 degrees is the boiling point of water. b. 0 degrees is absolute zero. c. 0 degrees is the freezing point of water. d. 32 degrees is the freezing point of water. Please select the best answer from the choices provided A B C D
Answer:
it is C on NCCA Quiz
Explanation:
Answer:
The correct answer is C., or ¨0 degrees is the freezing point of water¨.
613 kg - 3514 hg = ______________g?
Answer:
261600 grams
1 kilogram is equal to 10 hg or 1000 g
If the pressure of a gas is increased, then the volume will decrease because the particles of the gas will be forced more closely together.
The independent variable is
.
The dependent variable is
.
Then the independent variable is the pressure of the gas while the dependent variable is the volume of the gas as it depends on the variation in the pressure of the gas.
What is an ideal gas?It is an imaginary gas for which the volume occupies by it is negligible, this gas does not exist in a practical situation and the concept of an ideal gas is only the theoretical one,
A gas's volume will decrease as its pressure rises because the gas's particles will be pressed closer together.
As the volume of the gas depends on the fluctuation in the gas's pressure, the independent variable in this situation is the gas's pressure.
To learn more about ideal gas from here, refer to the link given below;
https://brainly.com/question/8711877
#SPJ2
Why mass is a physical quantity?
Answer:
[tex] \boxed{ \bold{ \boxed{ \sf{see \: below}}}}[/tex]
Explanation:
Mass is a physical quantity because it can be measured directly or indirectly and consists of a magnitude and a unit.
Hope I helped!
Best regards!
Does adding electrons change the mass
Use the formula to solve for the variable of d
v=d/t
A. d = v/t
B. d = vd
C. d = vt
D. d = t/v
a is correct
Explanation:
beacuse d is directly proportional bto velocity and the time taken
Answer:
C. d=vt
Explanation:
We are given this formula:
[tex]v=\frac{d}{t}[/tex]
and asked to solve for the variable d.
In order to solve for d, we must isolate it on one side of the equation.
d is being divided by t. The inverse of division is multiplication. Multiply both sides of the equation by t.
[tex]t*v=\frac{d}{t} *t[/tex]
[tex]t*v=d[/tex]
[tex]tv=d[/tex]
[tex]d=tv[/tex]
Due to the commutative property of multiplication, we can switch the v and the t.
[tex]d=vt[/tex]
The formula solved for d is d=vt and C is the correct answer.
If two conductors are not touching but are close to each other, a large enough voltage will cause an _________________ to occur between the conductors.
Answer:
Electrical breakdown.
Explanation:
When two conductors are relatively close enough, and have a very large voltage between them, it can lead to a Dielectric breakdown. A dielectric breakdown occurs when an insulator is subjected to a high enough voltage, suddenly becomes an electrical conductor and electric current flows through it. The air between the conductors is the insulator that breaks down, leading to an electrical discharge arc to flow between the two conductors. This electrical breakdown can cause catastrophic failure of electrical equipment, and fire hazards.
convert 10095 mm to pm
Answer:
1.01 × 1013 picometres
Explanation:
multiply the length value by 1e+9
PLZ HELP ME 50 POINTS AND BRAINLEIST Which processes do you suppose are responsible for the formation of hail during a thunderstorm?
Answer:
The thing responsible is
Explanation:
Hail: When raindrops fall through a very cold region, they form hail.
Conclusion:
It is caused when raindrops move through a very cold region.
Hope this helps....
Have a nice day!!!!
Answer:
Hail forms when raindrops fall in a very cold area
Explanation:
Elements in which family are most likely to have properties associated with
metals, such as malleability and good conductivity?
Answer: As with all metals, the alkali metals are malleable, ductile, and are good conductors of heat and electricity. The alkali metals are softer than most other metals.
Alkaline earth metals
The alkaline earth elements are metallic elements found in the second group of the periodic table
Explanation:
Cutting a log of wood into pieces is a____________________ change
Answer:
physical change
Explanation:
Physical change are changes affecting the form of a chemical substance, but not its chemical composition. Examples of physical change: melting, freezing, shape, size, color...
Answer:
It is physical change
Explanation
Because it didn't change the substances
After the wood is being cut into pieces it cant still be called wood
450 centimeters +500 millimeters = ___________ mm?
Answer:5000mm
Explanation:450cm=4500mm
4500mm+500mm=5000mm
Calcula la energía cinética de un coche de 500kg de masa que se mueve a la velocidad de 100 km/h. Pasamos la velocidad a las unidades del sistema internacional.
Responder:
192,900.64 Julios
Explicación:
La energía cinética es la energía que posee un cuerpo en virtud de su movimiento. Sea la masa del cuerpo m, su velocidad v.
Energía cinética = 1/2 mv²
Parámetros dados
masa del coche = 500 kg
velocidad = 100 km / h
La velocidad debe estar en m / s según la unidad internacional estándar. Al convertir;
100 km / h = 100 * 1000/3600 m / s
100 km / h = 27,8 m / s
velocidad del cuerpo = 27,8 m / s
Necesario
Energía cinética del coche = 1/2 * 500 * 27,8²
Energía cinética del automóvil = 1/2 * 500 * 771.6
Energía cinética del automóvil = 1/2 * 385,801.28
Energía cinética del automóvil = 192,900.64 Julios
Por lo tanto, la energía cinética del automóvil es 192,900.64 julios.
How can an object's motion be predicted by using a graph?
Answer:
Explanation:
For velocity
Velocity = Gradient of displacement - Time graph
That is, velocity (speed) = distance (or displacement) / time
What is the product of frequency and time period????
Answer:
k Nishant
Explanation:
the product of the time period of the sound wave and its frequency is equal to unity