C (Celsius) is the correct symbol for the metric (SI) unit of temperature. The correct option is D.
The Celsius scale is widely used for measuring temperature in the metric system.
The symbol "°C" is used to represent degrees Celsius. It is named after the Swedish astronomer Anders Celsius, who introduced the scale in the 18th century.On the Celsius scale, the freezing point of water is defined as 0 degrees Celsius, and the boiling point of water is defined as 100 degrees Celsius at standard atmospheric pressure.The Celsius scale is an integral part of the International System of Units (SI), which is the modern metric system used for scientific and everyday measurements.In certain scientific and engineering fields, such as thermodynamics, the Kelvin scale (symbol: K) is also used as an absolute temperature scale but the SI unit of temperature is Celsius.
Thus, the correct option is D.
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Earth, has a bigger mass than the Moon .
if you'll be able to go to the moon,
what happens to your weight?
How can a person’s movement away and towards a reference point be analyzed using a position-time graph?
Answer:
Explanation:
You can plot their change in position per unit of time. By taking the slope of this graph, you can figure out the velocity at any point
DESPERATE WILL GIVE BRAINLIST
How long does it usually take for a rock to undergo a stage within the rock cycle?
A. a few days
B. from 300 to 400 years
C. about one thousand years
D. thousands to millions of years
Answer: D. thousands to millions of years
Explanation: Stages within a rock's cycle cannot happen quickly. The formation and deterioration can take thousands to millions of years to occur.
I hope this helps!
Good luck <3
What speed should a spaceship of mass 5.21 x 107kg moving around a planet
only by the gravitational force be, if the distance between them is 6.27 x 108 m
and the mass of the planet is 4.76 x 1026 kg? Estimate G as 6.67 * 10-11 N (m/kg)
A. 7.12 x 103 m/s
B. 6.23 x 103 m/s
С. 4.25 x 103 m/s
D. 7.43 105 m/s
E. 7.25 x 103 m/s
Answer: A
Explanation:
The speed of the spaceship moving around a planet only by the gravitational force is 7.12 × 10³ m/s.
What is centrifugal force?A fictitious force that moves in a circle and is directed away from the center of the circle is called centrifugal force. When measurements are taken in an inertial frame of reference, the force does not exist. It only becomes relevant when we switch from a ground/inertial reference frame to a rotating reference frame.
The centrifugal force's unit is newton.
As the gravitational force is balanced by centrifugal force is orbital motion:
Gravitational force =centrifugal force
GMm/r² = mv²/r
v² = GM/r
v = √( GM/r)
= √(6.67×10⁻¹¹ ×4.76 ×10²⁶/6.27 ×10⁸)
= 7.12 × 10³ m/s.
Hence, The speed of the spaceship is 7.12 × 10³ m/s. Hence, option (A) is correct.
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sonia has three different sized blocks of copper . she made observations and mesaurements of each block. which of her measurements would be different ?
Answer:
This question lacks options, the options are:
A.The density of each block.
B.The electrical conductivity of each block.
C.The melting point of each block.
D.The volume of each block
The answer is D. Volume of each block
Explanation:
According to this question, Sonia has three blocks of different sizes. She then made observations and measurements of each block. The physical property of a substance that depends on the size of that substance is called EXTENSIVE PROPERTIES. This include mass, height, volume, length etc.
In this case, the different measurement Sonia will record on each copper block will be the VOLUME OF EACH BLOCK. This is because the volume depends on the size of the block (extensive), hence, will have different volume measurements.
A cyclist accelerates from a set of traffic lights.
The driving force of the back tyre on the ground is 250 N.
(a)
How much work is done by this force when the cyclist travels 5 metres?
never mind i got it
Find the mass of an object on earth that weighs 39 N?
Answer:
3.9kg
Explanation:
From newton's second law of motion
F =ma
a = 10m/s^2
F=39N
a= F/m
a= 39/10
a= 3.9m/s^2
A box is suspended from a crane at a height of 32 m from the ground. The box has 7840 j of gravitational potential energy. What is the mass of the box
Answer:
The mass of the box is 24.97 [kg]
Explanation:
In order to solve this problem, we must use the concept of potential energy, which is defined as the product of mass by gravity by height. So we have the following equation.
[tex]E_{p} =m*g*h[/tex]
where:
Ep = potential energy [J]
m = mass [kg]
g = gravity acceleration = 9.81 [m/s^2]
h = elevation = 32 [m]
7840 = m*9.81*32
m = 24.97 [kg]
Blank is the change in position of an object
Need help with this ! ————————————
Explanation:
i think the answer is displacement
Which type of investigation is lised to compare two subiects?
Comparative
Experimental
Descriptive
A thin plastic rod of length 2.5 m is rubbed all over with wool, and acquires a charge of 75 nC, distributed uniformly over its surface. Calculate the magnitude of the electric field due to the rod at a location 7 cm from the midpoint of the rod. Do the calculation two ways, first using the exact formula for a rod of any length, and second using the approximate formula for a long rod.
Answer:
find out the le
Explanation:
During a canoe trip camper paddles distance of 406 M and 70 seconds what is the average speed of the canoe
Answer:
The average speed is 5.8 m/s
Explanation:
I just did it
Why do the positive charges in the sugar grain not move?
1. Because protons are "stuck" in the nucleus, so they don't move between atoms in a material
2.
Because they are attracted by the negative tupperware
3. Because they are repelled by the negative tupperware
4.
Because the positive charges feel no attractive force from the tupperware
what difference will you get from the flying or air filled balloon and the hydrogen filled balloon.
Answer:Since most of air is made of nitrogen and oxygen, which have heavier molecular weights than hydrogen, air is denser than the hydrogen-filled balloon (the atmosphere is denser than the hydrogen-filled balloon). This results in the balloon floating in the air!
Explanation:
what is statement can most likey be useing in the shock waves of atmoic bomb
Answer:
The initial energy emission occurs by 80% or more in the form of gamma rays but these are quickly absorbed and dispersed mostly by air in little more than a microsecond, converting gamma radiation into thermal radiation (thermal pulse ) and kinetic energy (shock wave) which are actually the two dominant effects in the initial moments of the explosion. The rest of the energy is released in the form of delayed radiation (fallout or fallout) and is not always counted when measuring the performance of the explosion.
Explanation:
High altitude explosions produce greater damage and extreme radiation flux due to lower air density (photons encounter less opposition) and consequently a higher blast wave is generated.
What part of the life cycle is our Sun in?
How is mercury obtained and separated from other nearby substances?
what are duplet and octet elements??
what is the weight of a 500 kg boulder on the moon?
Answer:
F = 810 [N]
Explanation:
To solve this problem we must use the acceleration of gravity of the moon, which according to information provided by the internet we can see that the gravitational acceleration corresponds to 1.62 [m/s^2].
The weight of a body corresponds to the product of mass by gravity, so with the following equation we can find the weight.
F =m*g
F = 500 * 1.62
F = 810 [N]
heal
Why is Mercury usedcommonly
as Thermometric substance?
Answer:
Mercury is the only one in liquid state at room temperature. It's used in thermometers because it has high coefficient of expansion.
Explanation:
Hence, the slightest change in temperature is notable when it's used in a thermometer. It also has a high boiling point which makes it very suitable to measure higher temperatures.
Hope this helps :)
Noah Formula is in airplane which is flying at constant speed in a circular course of radius 5000 m., circling O'Hare Airport prior to landing. Noah observes that the plane completes each round trip in 400 seconds. What is the speed of the airplane? What is centripetal acceleration?
Answer:
(a). The speed of the airplane is 78.53 m/s.
(b). The centripetal acceleration 1.234 m/s².
Explanation:
Given that,
Radius = 5000 m
Time = 400 second
We need to calculate the speed of the airplane
Using formula of speed
[tex]v=\dfrac{d}{t}[/tex]
[tex]v= \dfrac{2\pi r}{t}[/tex]
Put the value into the formula
[tex]v=\dfrac{2\times\pi\times5000}{400}[/tex]
[tex]v=78.53\ m/s[/tex]
We need to calculate the centripetal acceleration
Using formula formula
[tex]a=\dfrac{v^2}{r}[/tex]
Put the value into the formula
[tex]a=\dfrac{78.53^2}{5000}[/tex]
[tex]a=1.234\ m/s^2[/tex]
Hence, (a). The speed of the airplane is 78.53 m/s.
(b). The centripetal acceleration 1.234 m/s².
Diamonds have a score of 10 on the Mohs scale. Therefore, they are used in grinding belts to buff and smooth other materials. What physical property is demonstrated by this? brainly
Answer:
Hardness
Explanation:
It has a score of 10 on the Mohs scale of HARDNESS
what is the magnitude of the gravitational force on each mass when m1=600 kg m2=400 kg, and their centers are 6 m apart? (choices shown in image)
Edit: I didn't realize there is a simulation for this question, so I used the simulation and got 4.45 x 10^-7, if anybody needs the answer
Answer:
4.45×10¯⁷ N
Explanation:
The following data were obtained from the question:
Mass 1 (M₁) = 600 Kg
Mass 2 (M₂) = 400 Kg
Gravitational constant (G) = 6.67×10¯¹¹ Nm²Kg¯²
Sperating distance (r) = 6 m
Force (F) =.?
The gravitational force can be obtained as follow:
F = GM₁M₂ / r²
F = 6.67×10¯¹¹ × 600 × 400 / 6²
F = 1.6008×10¯⁵ / 36
F = 4.45×10¯⁷ N
Therefore, the gravitational force is 4.45×10¯⁷ N
An airplane flying due north at 90km/h is being blown due west at 50 km/h. What is the magnitude of the resultant velocity of the plane?
Answer: 103 km/hr
Explanation:
Guessed on ck-12 and it ended up being right.
Answer:
50
Explanation:
He/she guessed...Ig its 50.
Use this graph to answer.
Calculate the turtle’s velocity during the following time intervals: 0-2
Answer:
10 m/s
Explanation:
Find the displacement.
xf - xi = d
0 - (-10) = 10 m
Find the acceleration.
d = 1/2at^2
10 = 1/2a(2)^2
10 = 1/2a(4)
10 = 2a
a = 5 m/s^2
Find the velocity.
v = at
v = 5(2)
v = 10 m/s
Neglecting air resistance, if you throw a ball straight up with a speed of 20 m/s how fast will it be moving when you catch it
Find kinetic energy if that same mass is now moving at a velocity of 3 m/s
Answer:
what is the mass???
Explanation:
just take the mass(kg) and half it
then take the halved mass and multiply it by 3 m/s
In recent years, assistive technologies have been developed to give people with disabilities equal access to resources. Apex
Answer:
as businesses became aware of the demand for equal access, they began t invest in research and development to meet the desires of their costumers.
Explanation:
just took the test, still failing :D
A rock falls from rest off a high cliff. How far has the rock fallen when its speed is 39.2 meters per second?
( plss I need help lol)
The rock fell as far as 78.4 meters.
Given the following data:
Initial speed = 0 m/s (since the rock fell from rest). Final speed = 39.2 m/sWe know that the acceleration due to gravity (a) for an object is equal to 9.8 meter per seconds square.
To find how far (distance) has the rock fallen, we would use the third equation of motion;
[tex]V^2 = U^2 + 2aS[/tex]
Where:
V is the final speed. U is the initial speed. a is the acceleration. S is the distance covered.Substituting the given parameters into the formula, we have;
[tex]39.2^2 = 0^2 + 2(9.8)S\\\\1536.64 = 0 + 19.6S\\\\19.6S = 1536.64\\\\S = \frac{1536.64}{19.6}[/tex]
Distance, S = 78.4 meters.
Therefore, the rock fell as far as 78.4 meters.
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