We have several questions about gravity, the answers are:
The first question is, what is gravitation?
We define gravitational force as the attraction force between two objects with mass. From this, we can see that the correct option is:
"the attraction of any two objects because of their mass"
The second question is, which of the following was discovered by Newton?.
Newton concluded that the forces between objects with masses were what defined the orbits in the solar system, so the correct option here is:
"Gravity keeps the planets in their orbits."
The third question is: How the gravitational constant was first determined?
It was originally measured by Cavendish in 1978, he actually measured Earths density, and by knowing that the acceleration was roughly 9.8m/s^2, he could estimate the constant, so here the correct option is:
"by knowing that the acceleration caused by gravity is 9.8 m/s/s"
The fourth question is: The force of gravity between any two ordinary objects on the earth is?
Remember, gravity is an attractive force that depends on the mass of the objects. Here the only option that is always correct is:
"stronger if the objects are more massive"Question 5:Here the correct option is:"
For question 5 we have that the correct one is:
"The space station exerts a force on the earth toward the space station" Gravity acts on both objects, the earth and space station, just that the planet has a lot more mass than the space station, thus the force that it causes in the planet is negligible.
Question 6:
Gravity increases linearly with mass and decreases quadratically with distance, so if we double the mass and the radius, we can expect that the gravity at the surface to be near half of that one we have on Earth, then the correct option is:
"one half as much as Earth."
Question 7:
Again, force decreases with distance squared, then if you are closer to the planet, let's say, at sea level, the force will be greater than if you are on top of a mountain. The correct option is:
"The force of the earth's gravity on an object at sea level is stronger than at the top of a mountain."
Question 8.
By definition of gravitational field, the correct option is the last one:
"a region of space-time with a property at each point determined as the gravitational force on any object divided by its mass"
Question 9:
The field defines the force, thus the arrows should point in the same direction that the force acts, the correct option is:
"field vector arrows pointing in the direction of the gravitational force."
Question 10:
The correct option is 2.5 N/kg
Notice that N/kg = m/s^2
To get this, you just need to compute the 25% of Earth's gravitational acceleration.
Question 11:
The correct option is:
"the way an object with mass placed on a surface bends the surface"
Gravity is thought as a deformation in the space plane.
Question 12:
We just multiply the mass by the field:
10kg*3.5 N/kg = 35N
If you want to learn more, you can read:
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Đoạn dây dẫn thẳng có dòng điện I chạy qua, đặt trong từ trường
đều và vuông góc với các đường sức từ. Lực từ tác dụng lên đoạn dây
có phương
A straight piece of wire with a current I flowing through it is placed in a magnetic field
A straight piece of wire with a current I flowing through it is placed in a magnetic fielduniform and perpendicular to the magnetic field lines. Magnetic force acting on the string
A straight piece of wire with a current I flowing through it is placed in a magnetic fielduniform and perpendicular to the magnetic field lines. Magnetic force acting on the stringthere is a way
a 500kg Cannon fires a 5 kg Cannonball Which object experience the greatest Force? A. The cannon B. the force are equal and opposite C. not possible to determine D. The cannonball
it's because the cannon pushing the bullet to fire
hope it helps!How much work is done in holding a 20 N sack of potatoes while waiting in line at the
grocery store for 1000s ?
A. 20000J
B. 100J
C. 0.5J
D. Can’t be calculated
Answer: A
Explanation:
honestly, it sounded the best
A line in the spectrum of an element was observed to have a frequency of 5.17 X 1014 s-1. What is the wavelength of this radiation
Answer:
f = c / y where y is the wavelength lambda
y = 3.00E8 / 5.17E14/s = 5.80E-7 m = 580 millimicrons - visible yellow
To calculate the wavelength of the radiation, you can use the formula that relates the speed of light (c) to the frequency (f) and wavelength (λ) of electromagnetic waves: λ = c / f.
Where:
λ = Wavelength
c = Speed of light (approximately 3.00 x 10^8 m/s)
f = Frequency
Given that the frequency (f) is 5.17 x 10^14 s^-1, you can plug in the values and calculate the wavelength:
λ = (3.00 x 10^8 m/s) / (5.17 x 10^14 s^-1)
λ ≈ 5.80 x 10^-7 meters
So, the wavelength of the radiation is approximately 5.80 x 10^-7 meters, which is in the range of the visible light spectrum (typically measured in nanometers).
To know more about wavelength:
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#SPJ3
Heated air inside a hot-air balloon causes it
to rise into the sky. When
the air
cools, the
like an
balloon returns to the ground. When is the hot-air balloon behaving
air mass in
a high-pressure area? In a low-pressure area?
Answer:
There is pressure on both the in and outsides of the balloon: high inside and low outside, respectively. In terms of air mass, high pressure has greater activity and tends to move upward (balloon rises); whereas low presssure, being slower, descends (balloon descends).
Explanation:
A boat is traveling at an initial velocity of 2.7 meters per second in the positive direction. It accelerates at a rate of 0.15 meters per second squared for 12 seconds. What is the final velocity of the boat?
Answer:
[tex]\boxed {\boxed {\sf 4.5 \ m/s \ in \ the \ positive \ direction}}[/tex]
Explanation:
We are asked to find the final velocity of the boat.
We are given the initial velocity, acceleration, and time. Therefore, we will use the following kinematic equation.
[tex]v_f= v_i + at[/tex]
The initial velocity is 2.7 meters per second. The acceleration is 0.15 meters per second squared. The time is 12 seconds.
[tex]v_i[/tex]= 2.7 m/s a= 0.15 m/s²t= 12 sSubstitute the values into the formula.
[tex]v_f = 2.7 \ m/s + (0.15 \ m/s^2)(12 \ s)[/tex]
Multiply the numbers in parentheses.
[tex]v_f= 2.7 \ m/s + (0.15 \ m/s/s * 12 \ s)[/tex]
[tex]v_f = 2.7 \ m/s + (0.15 \ m/s *12)[/tex]
[tex]\v_f=2.7 \ m/s + (1.8 \ m/s)[/tex][tex]v_f=2.7 \ m/s + (1.8 \ m/s)[/tex]
Add.
[tex]v_f=4.5 \ m/s[/tex]
The final velocity of the boat is 4.5 meters per second in the positive direction.
When converted to a household measurement, 9 kilograms is approximately equal to a) 9000 grams. b) 9000 ounces. 19.8 ounces. d) 19.8 pounds.
Answer:
the answer is because Ikg gives 1000g
How much work is the adult completing
1.6j
0.6j
20j
1,500j
I NEED THIS DONE FAST
Answer:
20j
Explanation:
espero haverte
ayudado
HELPPPPPPPPP PPPP PPPPP
Answer:
I believe Beta Radiation based upon my research
Explanation:
Answer:
n
Explanation:
klljl
CAN SOMEONE HELP ME ON THIS *VIEW THE PICTURE*
need help with question #1,2,3
Answer:
i dont know
Explanation:
but i know that someone knows
What should people do to save blue whales?
Answer:
Participate in beach cleanups to reduce water pollution.
Explanation:
Answer this one and u give you more points Need this now. This question has two parts. First, answer part A. Then, answer part B. Part A: Which statement best summarizes the theme of the text? O A. Tokyo is the best city in the world. O B. It is a long way from San Francisco to Tokyo 0 C. Sometimes we have to try something new to enjoy it. O D. Many things in Japan are different from what an American is used to. Part B: Which sentence from the text best supports your answer in part A? D A. "It was July, and Todd wanted to hang out with his friends." B. He had never eaten pickled vegetables, but the taste was not bad. C. Due to being awake during the protracted flight, Todd was exhausted and slept well. D. The sushi in San Francisco was not nearly as good.
Answer: Part A its C
Part B is B
Explanation:
A sudden gust of wind exerts a force of 19.0 N for 1.20 s on a bird that had been flying at 5.00 m/s. As a result, the bird ends up moving in the opposite direction at 7.00 m/s. 1) What is the mass of the bird
Answer:
Explanation:
An impulse results in a change of momentum
FΔt = mΔV
m = FΔt / ΔV
m = F(t₁ - t₀) / (v₁ - v₀)
If the initial flight direction is the positive direction
m = -19.0(1.20 - 0.00) / (-7.00 - 5.00)
m = 1.9 kg
what is the average speed of the object during the first 4.0 seconds?
0 m/s^2
2 m/s^2
4 m/s^2
8 m/s^2
Answer:
The average speed of the given object.. is 2m/^s
công cần thiết để đoàn tàu có khối lượng m = 200 tấn tăng tốc từ 36km/h lên 54km/h là
jawaban: what is languange?
8. How do you think the biodiversity of a large forest compares to a small forest?
Answer:
A large forest has more toes than the smaller forest
Explanation:
If the dog barks twice, but the cat doesn't, then it states that I caw can ring 5 times.
A hooligan throws a stone vertically down with an initial speed of 17 m/s from the roof of a building 51 metres above the
ground. What is the speed of the stone at impact?
Answer:
Explanation:
v² = u² + 2as
v² = 17² + 2(-9.8)(-51)
v² = 1,288.6
v = ±35.89707...
v = 36 m/s
Why did these observations persuade Galileo that the geocentric view of Ptolemy
Answer:
Such phases could only be explained if the planet Venus orbited the Sun. Ptolemy's Geocentric Model could not explain Venus's phases. Galileo was well aware that Ptolemy was mistaken.
Explanation:
Hope it helps:)
Does anyone know how to solve this?
A cord 3m long is coiled around the axle of a wheel. The cord is pulled with a constant force of 40N. When the cord leaves the axle, the wheel is rotating at 2rev/s. Determine the moment of inertia of the wheel and axle. Neglect friction.
Answer:
Explanation:
2okg
What energy transformation occurs when
gasoline burns in an automobile?
Answer:
See below:
Explanation:
Hello! I hope you are having a nice day!
There are many forms of energy transformation, the main being:
+ GPE (Gravitational Potential Energy)
+ Chemical Energy
+ Electrical Energy
+ Radiant Energy
+ Kinetic Energy.
+ Mechanical Energy
For this case, the gasoline has to power a motor in most cases to turn the wheels of the automobile, the gasoline is burnt to create energy to power the motor(s).
In this case, the motor is moved due to Mechanical Energy.
(Keep in mind that Gasoline isn't energy, although it's used to create energy.)
Cheers!
A car travels at a constant speed around a circular track whose radius is 2.5 km. The car goes once around the track in 290 s. What is the magnitude of the centripetal acceleration of the car
can anyone help me put this sentence into a scientific grammar ig : I had to put the blocks on the weigher, and wright down how much they weigh. I had to put the blocks next to the ruler to measure the height.
Answer:
I had to put the blocks on the weigher, and write down how much they weigh. I had to put the blocks next to the ruler to measure the height.
Explanation:
u would change wright to write because wright can be a name and if u change it to write that would be correct because u are actually writing something down. so it would be right because u are writing something down
My 2nd Question Asked:
If the universe is expanding, what is it expanding into?
Answer:
even more space than it already encompassed.
Explanation:
it is expanding into nothingness or it might it expanding in and of itself
Hello, I wanted an answer from a mathematician. The number 1.04 is closer to the number 1, 2, 1.25 or 1.5.
You throw an 8.75 g coin straight up into the air. The coin travels a distance of 776 cm upward.
What was the initial speed of the coin when you released it? Give your answer in units of m/s
and assume the coin is in free fall while it is in the air
Answer:
halo
Explanation:
good bye
Just Answer No Need To Explain and please no SPAM 100 POINTS!!!!
A ceiling fan operates at three speeds, using 120 V of electricity from the wall. At low speeds, it uses 0.25 A. Calculate the resistance needed to generate that current. Then in 1-2 sentences, describe how the resistance would change at medium and high speeds if larger currents are needed at those speeds. Your answer should include the calculated resistance and a sentence describing your reasoning.
Did anyone get an answer for this??
I. The resistance which is needed to generate a current of 0.25 Ampere in the ceiling fan is 480 Ohms.
II. Since current is inversely proportional to the resistance in the electrical circuit, an increase in the current (larger currents) flowing into the electrical circuit of the ceiling fan would cause the resistance to decrease in magnitude at medium and high speeds.
Given the following data:
Voltage = 120 VoltsCurrent = 0.25 AmpereTo calculate the resistance needed to generate that current, we would apply Ohm's law:
Ohm's law states that at constant temperature, the current flowing through an electrical circuit is directly proportional to the voltage (potential difference) applied across the two terminals of the electrical circuit and inversely proportional to the resistance in the electrical circuit.
Mathematically, Ohm's law is given by the formula;
[tex]V=IR[/tex]
Where;
V is the voltage measured in Volts.I is the current measured in Ampere.R is the resistance measured in Ohms.Making R the subject of formula, we have:
[tex]R =\frac{V}{I}[/tex]
Substituting the given parameters into the formula, we have;
[tex]R=\frac{120}{0.25}[/tex]
Resistance, R = 480 Ohms
Since current is inversely proportional to the resistance in the electrical circuit, an increase in the current (larger currents) flowing into the electrical circuit of the ceiling fan would cause the resistance to decrease in magnitude at medium and high speeds.
In conclusion, the larger the current, the lower the resistance would be at both medium and high speeds.
Read more on resistance here: https://brainly.com/question/23754122
What is the coefficient of Static Friction if It Takes 44N of force to move A Box that Weight 86N ? A, 0.78 B 0.51. C.0.78N D. 0.51N.
Answer:
1. What is the force of friction between a block of ice that
weighs 930 N and the ground if m = .12?
F fr £ µ sF N
F fr = µ kF N
F = ma
F N = 930 N
µ s = .12
F fr =µ kF N = (930)(.12) = 111.6 N = 110 N
(Table of contents)
2. What is the coefficient of static friction if it takes 34 N of
force to move a box that weighs 67 N?
F N = 67 N
µ s = ?
F fr =34 N
F fr = µ kF N
34 = µ k(67)
µ s = .507 = .51
(Table of contents)
3. A box takes 350 N to start moving when the coefficient of
static friction is .35. What is the weight of the box?
F N = ?????
µ s = .35
F fr =350 N
F fr = µ kF N
350 = (.35)F N
F N = 1000 N = 1.0 x 10 3 N
(Table of contents)
4. A car has a mass of 1020 Kg and has a coefficient of
friction between the ground and its tires of .85. What force of
friction can it exert on the ground? What is the maximum
acceleration of this car? In what minimum distance could it
stop from 27 m/s?
First find the normal force which is the weight in this
case:
F = ma = (1020 kg)(9.80 m/s/s) = 9996 N = F N
Then use the Friction formula to find the frictional
force with the ground:
F fr = = (.85)(9996 N) = 8496.6 N = 8500 N
Now we can find the acceleration. The Force of
friction is what speeds up the car, so
F = ma
8496.6 N = (1020 kg)(a)
a = 8.33 m/s/s = 8.3 m/s/s
So now we need to solve a cute linear kinematics
problem:
x = ?????
v i = 27
v f = 0
a = -8.33 m/s/s (slowing down)
t = don't care
Use vf 2 = vi 2 + 2ax:
0 2 = (27) 2 + 2(-8.33 m/s/s)s
x = 43.76 m = 44 m
(Table of contents)
5. Clarice moves a 800. gram set of weights by applying a
force of 1.2 N. What is the coefficient of friction?
m = 800. g = .800 kg (divide by 1000)
First find the normal force which is the weight in this
case:
F = ma = (.800 kg)(9.80 m/s/s) = 7.84 N = F N
Next - apply the force of friction formula:
F fr = µ kF N
1.2 N = µk (7.84 N)
µ k = .15306 = .15
(Table of contents)
Explanation:
Note that is not an answer that is guide
thanks po
hope it help ❤️
Which of these are properties of analog signals?
Analog signals are often combinations of many other analog signals.
Analog signals are quantized.
Analog signals can take on any value.
Analog signals are susceptible to noise.
Answer:
Analog signals are susceptible to noise
An object in simple harmonic motion obeys the following position versus time equation: y = (0.50 m) sin (π/2 t). What is the amplitude of vibration and its period of vibration?
Hi there!
The Amplitude is the 'A' value of the following SHM equation:
[tex]x(t) = Asin(\omega t)[/tex]
Thus, the amplitude of this object:
A = 0.50 m
The period of vibration is equivalent to:
[tex]T = \frac{2\pi}{\omega}[/tex]
In this instance:
[tex]\omega = \frac{\pi}{2}[/tex]
Therefore:
[tex]T = \frac{2\pi}{\frac{\pi}{2}} = \frac{4\pi}{\pi} = \boxed{\text{ 4 seconds.}}[/tex]
If an object moves at a constant velocity of 3 m/s, what is the force acting on the object
Answer:
Explanation:
don't know about any of the individual forces but the NET FORCE is zero.
If there were a net force, then acceleration would occur and velocity would not be constant.
