What determines the volume of a gas?o temperature and gravity
o temperature and pressure
only pressure
o only temperature
Answers
Answer:
Temperature and Pressure
Explanation:
Both temperature and pressure determine the volume of a gas in a closed container
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Answers
Answer;
The above statement is true
Human impact on one system leads to changes in more of Earth’s systems.
Explanation;
Events can occur naturally, such as an earthquake or a hurricane, or they can be caused by humans, such as an oil spill or air pollution. An event can cause changes to occur in one or more of the spheres, and/or an event can be the effect of changes in one or more of Earth's four spheres.
Human impact on one system leads to changes in more of Earth’s systems because things like carbon and methane emissions affect the environment, which affects all plant and animal life.
The statement "Human impact on one system leads to changes in more of Earth’s systems." is a true statement. This is further explained below.
What are Earth’s systems?
The Earth's five systems
- geosphere
- biosphere
- cryosphere
- hydrosphere
- atmosphere
combine to create the surroundings we know.
In conclusion, These systems are on a balance to maintain human existence, meaning that if there is a disruption to one there is a disruption to all.
Read more about Earth
Answers
Answer:
The velocity of the ball becomes half when the time period is doubled.
Explanation:
Let be the time period of the ball,
be radius and
be the velocity of the ball performing circular motion.
Now, for a circular motion, the velocity is given as:
From the above relation, we can conclude that, velocity is inversely proportional to time period if the radius is constant.
This means that if time period is increased, velocity will decrease and vice-versa.
So, if time period is doubled, the velocity will reduce by half. This can be verified mathematically also given below.
Divide by
, we get
Here, are the new and old velocities.
So, it can be concluded that if the time period is doubled, velocity is reduced by half.
at a distance of 0.2m for m the equilibrium position.
Answers
Answer:
a) 12.8 N
b) 3.2 m/s²
Explanation:
I'm guessing the period is 0.5π s.
Period of a spring in simple harmonic motion is:
T = 2π √(m/k)
Given T = 0.5π and m = 2 kg:
0.5π = 2π √(2/k)
0.25 = √(2/k)
0.0625 = 2/k
k = 32
The spring constant is 32 N/m, and the maximum displacement is 0.4 m. The maximum force can be found with Hooke's law:
F = kx
F = (32 N/m) (0.4 m)
F = 12.8 N
The acceleration can be found with Newton's second law:
∑F = ma
kx = ma
(32 N/m) (0.2 m) = (2 kg) a
a = 3.2 m/s²
Answers
Final answer:
A radiologist performs multiple tests including radiography (X-rays), MRI, CT scans, and ultrasounds to diagnose and treat various diseases and injuries.
Explanation:
A radiologist is a medical doctor specialized in diagnosing and treating diseases and injuries using medical imaging procedures. One of the key tests performed by a radiologist is a radiography, also known as X-ray. In this test, a small amount of radiation is used to produce images of the inside of the body. They also perform other tests such as Magnetic Resonance Imaging (MRI), Computed Tomography (CT) scans, and ultrasounds, depending on the nature of the patient's condition.
Learn more about Radiologist here:
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O
A. conscious and unconscious
O
B. emotional and rational
O
C. conscious and preconscious
O
D. subconscious and conscious
Answers
Answer:
conscious and unconscious
Explanation:
Answers
The weight of an object is the force it experience by the gravitational pull of the planet. The gravitational pull by earth is greater than that from moon. This leads to greater weight in earth than in moon.
What is gravitational force ?
Gravitational force is a kind of force by which an object attracts other objects into its center of mass. The force exerted between the objects depends on the mass and distance between them.
Earth exerts a gravitational pull to every objects on its surface and that's why we are standing on the ground. We experience a weight downwards due to this force.
The acceleration due to gravity in earth = 9.8 m/s²
g in moon = 1.63m/s².
then weight = m g
the weight of a 10 kg iron bar in earth is 98 N and that in moon will be 16.3 N.
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Answer:
The decrease in the downward force that a mass of iron can exert on the moon versus the force it exerts on earth is due to:
- The force of gravity on Earth is greater than the force of gravity on the moon.
Explanation:
To recognize the calculation within the statement, you must know that the Newton unit is equal to:
- Newton = (Kilogram * meter) / second ^ 2
And that the gravities of the Earth and the Moon are:
- Earth gravity = 9.807 m / s ^ 2
- Moon gravity = 1.63 m / s ^ 2
Finally, you must know the force formula (since we are talking about a descending force):
- Force = mass * acceleration (gravity is a measure of acceleration)
Since the mass in both cases is the same (10 kilograms), the variation in acceleration will provide different values of descending force, as shown below, replacing the values:
- Downward force on Earth = 10 Kg * 9,807 m / s ^ 2 = 98.07 Kg * m / s ^ 2 = 98.07 Newtons.
- Downward force on the Moon = 10 Kg * 1.63 m / s ^ 2 = 16.3 Kg * m / s ^ 2 = 16.3 Newtons.
As you can see, when it comes to force, the less acceleration (in this case less gravity), the lower the downward force will be with a mass of equal weight.