Answer:
physics
kinematics
dynamics
fluid mechanisms
earth sciences
"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.
Jake drove 160 kilometres in 2 hours. What was his speed, in kmh-1
Answer:
80 kmh
Explanation:
IDK lol i just divided it by 2 because he drove 80 kilometres in one hour
Answer:
80kmph
Explanation:
speed = d/t
d= distance
t= time
s=160/2
s=80kmph
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
Figure shows three blocks that are being pulled along a smooth horizontal surface. The masses of the blocks
are shown in figure and tension force in cord connecting A and B = 120 N. The pulling force Fis:
A SZONB
C С
4kg 4kg 2kg
Fu
Smooth
(C) 125 N
(A) 50 N
(B) 100 N
(D) 200 N
Answer:
The pulling force F is 200 N
Explanation:
We note that the tension in a rope between two or three blocks is given by the relation;
Where we have;
m₁ → T₁ → m₂ → T₂ → m₃ → F
[tex]T_1 = \dfrac{m_1}{m_1 + m_2 + m_3} \times F[/tex]
[tex]T_2 = \dfrac{m_1 + m_2}{m_1 + m_2 + m_3} \times F[/tex]
m₁ = 2 kg
m₂ = 4 kg
m₃ = 4 kg
T₂ = 120 N
Therefore, by substitution, gives;
2 kg → T₁ → 4 kg → 120 N → 4 kg → F
[tex]120 \ N = \dfrac{2 \ kg + 4 \ kg}{2 \ kg+ 4 \ kg+ 4 \ kg} \times F = \dfrac{6 \ kg}{10 \ kg} \times F[/tex]
F = 120 N × (10 kg)/(6 kg) = 200 N
The pulling force F = 200 N.
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
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:
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.
Scientists measure mass with a(n)
613 kg - 3514 hg = ______________g?
Answer:
261600 grams
1 kilogram is equal to 10 hg or 1000 g
Turner’s treadmill starts with a velocity of −3.0 m/s and speeds up at regular intervals during a half-hour workout.After 33 min, the treadmill has a velocity of −6.7 m/s. What is the average acceleration of the treadmill during this period? Answer in units of m/s^2
Explanation:
Acceleration is change in velocity over change in time.
a = Δv / Δt
a = (-6.8 m/s − (-3.0 m/s)) / (33 min × 60 s/min)
a = (-3.8 m/s) / (1980 s)
a = -0.0019 m/s²
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!
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.
A gas is taken in a vessel which is then sealed. The gas is then heated. How will the
temperature, pressure and volume of the gas change?
Since the vessel is sealed, all of
them will remain the same.
А
B
The temperature will increase,
the pressure and volume will
remain the same.
The temperature and pressure
will increase, the volume will
remain the same.
The temperature, pressure and
volume will all increase.
D
I
Answer:
B
Explanation:
heating increases the temperature, increase in temperature increases number of collisions hence increases pressure,volume still remains because there is no addition
Heating increases the temperature, increase in temperature increases the number of collisions hence increasing pressure, volume still remains because there is no addition
The answer is option B.
Does increasing temperature increase the number of collisions?Due to the fact the frequency of collisions depends on the temperature, A is virtually now not steady. Instead, A will increase slightly with temperature as the extended kinetic energy of molecules at higher temperatures reasons them to move barely faster and for that reason go through more collisions consistent with unit time.
The extent of the fuel consequently turns large because the temperature of the fuel will increase. As the number of gas particles increases, the frequency of collisions with the partitions of the box ought to grow.
Learn more about kinetic energy here: https://brainly.com/question/25959744
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When the course deviation indicator (CDI) needle is centered during an omnireceiver check using a VOR test signal (VOT), the omnibearing selector (OBS) and the TO/FROM indicator should read:_______
Answer:
0° FROM or 180° TO
Explanation:
A course deviation indicator or the CDI may be defined as an avionics tool or instrument that is used in the aircraft navigation which is used to determine an aircraft's lateral position with relation to a course.
While using the VOT service, we should tune the VOT frequency of the VOR receiver. And with the CDI leveled centered, the omnibearing selector or the OBS should read as 0° with the TO/FROM indicator showing 'FROM'. Else the OBS should read as 180° with the TO/FROM indication showing 'TO.'
A stone is thrown with an initial upward velocity of 7.0 m/s and experiences negligible air resistance. If we take upward as the positive direction, what is the velocity of the stone after 0.50 s?
Answer:
2.1 m/s
Explanation:
The following data were obtained from the question:
Initial velocity (u) = 7 m/s
Time (t) = 0.50 s
Final velocity (v) =?
Since the is thrown upward, it means that the stone is going against gravity. Thus, the value of the acceleration due to gravity will be negative i.e – 9.8 m/s²
Thus, we can obtain the velocity of the stone after 0.50 s as follow:
Initial velocity (u) = 7 m/s
Time (t) = 0.50 s
Acceleration due to gravity (g) = – 9.8 m/s²
Final velocity (v) =?
v = u + gt
v = 7 + (– 9.8 × 0.5)
v = 7 – 4.9
v = 2.1 m/s
Therefore the velocity of the stone after 0.5 s is 2.1 m/s.
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:
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
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.
450 centimeters +500 millimeters = ___________ mm?
Answer:5000mm
Explanation:450cm=4500mm
4500mm+500mm=5000mm
convert 10095 mm to pm
Answer:
1.01 × 1013 picometres
Explanation:
multiply the length value by 1e+9
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."
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
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What is mean by physics, where the word derived from...what is mean by the word mean by science,from where it is derived from????
Answer:
The word physics originates from Greek word meaning nature physics is therefore a science dealing with the study of nature and various natural phenomenon.Physcis is the branch of science which deals with the study of matter,energy and the relationship between them.
Science is derived from the Greek word scientia which means knowledge science is defined as the knowledge gathered from observations and experimentations.
Explanation:
Hope it will help you. :)
0.075 L - 9 mL = _____________ L?
Does adding electrons change the mass
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)
The recommendations state that "members of the general public should not be exposed on a continuous basis to___________ electric field strengths exceeding 5 kV/m," or to magnetic fields exceeding 0.1 mT (1 gauss or 1,000 mG).
Answer:
electric field must not exceed 5000 V / m ( 5 kV/m)
Explanation:
All electrical equipment produces electric and magnetic fields that must be within the range recommended by WHO, the upper limit for the sum of all fields is
The electric field must not exceed 5000 V / m
to get an idea of the intensity produced by one of the devices that has the largest electric field in the radio with 180 V / m
Answer
why is MA always less than VR?
Answer:
[tex] \boxed{ \bold{ \boxed{ \sf{see \: below}}}}[/tex]
Explanation:
MA ( Mechanical Advantage ) is always less than VR ( Velocity Ratio ) because MA is reduced by friction but VR is not affected by friction.
Hope I helped!
Best regards! :D
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