The steel one.
The steel one has more force due to the weight and mass.
An object's mass is a crucial indicator of how much stuff it contains. The gravitational pull of an object is measured by its weight. It is influenced by the object's location in addition to its mass. As a result, weight is a measurement of force.
What ball has the greater amount of force acting on it?The heavier (denser) object will fall quicker if two identically sized but made of different materials objects are present. This is because both objects will experience the same drag and buoyancy forces, but the heavier object will experience a stronger gravitational pull.
Things fall to the earth faster as a result of gravity. Acceleration is a modification of velocity, and velocity is a measurement of the direction and speed of motion. The longer an object is in free fall, the faster gravity makes it tumble toward the ground.
Therefore, solid steel ball have high mass and greater amount of force acting on it.
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When a current flows through a light bulb, it emits 30 J light energy in 2 seconds, What is the power of the bulb?
The power of the light bulb is 15 watts.
What is power ?Power in physics is defined as the rate of energy per unit time or in other words the work done by any electrical appliance per unit time. Power is expressed as -
P = E/T where E is Energy and T is the time period.
How to calculate the value of power in the question ?Given that the light bulb emits 30 J light energy in 2 seconds.
We have E = 30J and T = 2 seconds.
Therefore power(P) = Energy(E) / Time(T)
∴ P = 30 / 2 = 15 watts
Thus the power of the light bulb is 15 watts.
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Dinesh wants to launch a package over the garden wall to his friend on the other side. His plan is to set up a see-saw, put the package on one end and jump on the other end. Dinesh determines that he will land on the board with a force of 1,127 newtons, and the package weighs 322 newtons. The board he is going to use for the see-saw is 9 meters long. How close to the end of the board should Dinesh put the fulcrum?
Answer:
Dinesh should put the fulcrum 2 m from himself and 7 m from the package.
Explanation:
Let the fulcrum be x meters from Dinesh's end.
The sum of clockwise moment must balance the sum of anti-clockwise moment.
Taking a moment about the fulcrum
(Force exerted by Dinesh) × (Distance of Dinesh from the fulcrum) = (Weight of the package) × (Distance of the package from the fulcrum)
Force exerted by Dinesh = 1127 N
Distance of Dinesh from the fulcrum = x m
Weight of the package = 322 N
Distance of the package from the fulcrum = (9 - x) m
1127 × x = 322 (9 - x)
1127x = 2,898 - 322x
1127x + 322x = 2,898
1449x = 2898
x = (2898/1449) = 2 m
Hence, Dinesh should put the fulcrum 2 m from himself and 7 m from the package.
Hope this Helps!!!
At what point in a waterfall, do the drops of water contain the most gravitational potential energy?
Answer:
The water above receives energy as it falls down the short waterfall. This energy was stored as potential energy in the gravitational field of the Earth and came out of storage as the water dropped. This energy which came out of the gravitational field ended up being expressed as the kinetic energy of the water. That is, the water gains kinetic energy as it drops. An ounce of water is going faster when it hits the bottom of the waterfall than it was when it went over the top of the waterfall
Explanation:
The drops of water contain the most gravitational potential energy at the top before they start falling.
At the top of the waterfall
GravitationAt the top of the waterfall, the water drops have the most gravitational potential energy before they start falling as the water at the peak of the waterfall is higher in the Earth's gravitational field and has gravitational potential energy. The potential energy is converted to kinetic energy when it falls. As a result, energy is not created; it was always there, stored as potential energy.
Potential energy is energy that is stored and is determined by the relative positions of various pieces of a system. Kinetic energy is the energy that an item or particle has as a result of its movement.
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A TV draws 0.867 A of current when connected to a 122 V outlet. It’s resistance is 140.71.
A.)How many electrons pass through the TV per minute?
B.)How much electrical energy does the TV convert to other forms of energy
per minute?
Answer:
Explanation:
current measures charge flowing per second .
A current of .867 A means charge of .867 coulomb is flowing per second
charge flowing per minute = .867 x 60
= 52.02 coulomb
one electrons carries a charge of 1.6 x 10⁻¹⁹ Coulomb
So no of charge flowing per minute
= 52.02 / 1.6 x 10⁻¹⁹
= 32.5 x 10¹⁹ .
B )
electrical energy consumed per minute
= V X I X t , V is volt , I is current and t is time .
= 122 x .867 x 60
= 6346.44 J .
(05.03 MC)
The color of four stars is shown in the table below.
Color of Stars
Star Color
W Yellow
X White
Y Blue
Z Orange
What is the correct order of the surface temperature of the stars, starting from the highest to the lowest?
Group of answer choices
Y, Z, W, X
X, W, Z, Y
Y, X, W, Z
Z, W, X, Y
Answer:
C is correct
Explanation:
The order of the surface temperature of the stars, starting from the highest to the lowest is Y > X > W > Z.
What is Wien's displacement law ?Wien's displacement law states that, the black-body radiation curve for different temperatures will have different peaks of wavelengths and the wavelength is inversely proportional to the surface temperature.
Here,
According to Wien's displacement law,
The wavelength of the star is inversely proportional to its surface temperature.
λ [tex]\alpha[/tex] 1/T
where T is the surface temperature.
Therefore, the star with lowest wavelength will have the highest surface temperature.
Consider the wavelengths of each stars given,
The increasing order of their wavelengths can be written as,
λ(Orange) > λ(Yellow) > λ(White) > λ(Blue)
Therefore the increasing order of their surface temperatures will be,
T(Blue) > T(White) > T(Yellow) > T(Orange)
Hence,
The order of the surface temperature of the stars, starting from the highest to the lowest is Y > X > W > Z.
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A car veers off course and runs straight into a brick wall. This is an example
of which of the following?
A. long time, large force
B. long time, small force
C. short time, small force
D. short time, large force
Answer:
Short time large force
Any two differences between SI units and derived units
help me...
Answer:
SI unit
1) SI unit does not depend on other.
2) they have their own identity.
Derived unit
1) They depend upon other or fundamental unit.
2) they don't have their own identity.
What is the current when a 200Ω appliance is plugged in to the wall?
Answer:1.1 A
Explanation:
Given
Resistance of appliance [tex]R=200\ \Omega[/tex]
We know common house hold voltage in India is [tex]220\ V[/tex]
and according to ohm's law
[tex]V=IR[/tex]
So, current
[tex]I=\frac{220}{200}[/tex]
[tex]I=1.1\ A[/tex]
If several forces are exerted on a system, calculate the work done by each force, then multiply the results.
Question 4 options:
True
False
Answer:
false, each force might have a different about and a different direction
False because each force might have a different about and a different direction.
What is force?A force in physics is an effect that has the power to alter an object's motion. An object with mass can change its velocity, or accelerate, as a result of a force. An obvious way to describe force is as a push or a pull. A force is a vector quantity since it has both magnitude and direction.
The vector sum of all the forces equals the net force. In other words, the net force is the sum of all forces, it is obtained by combining all forces as vectors. The net force is the sum of the force vectors A + B + C for the situation of the three forces on the force board.
Work done due to force is given as,
Work done, W = F.S cosФ
Where F is force a vector quantity, S is displacement and Ф is angle between them.
When forces are exerted in different direction than net force is calculated using vector sum.
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Which electromagnetic radiation can be seen with the human eye?
ultraviolet rays and visible light
infrared rays, visible light, and ultraviolet rays
visible light
visible light and X-rays
Answer:
Visible light
Explanation:
Answer:
C visible light
Explanation:
Which factors affect the speed of ocean waves?
Answer:
The speed of all ocean waves is controlled by gravity, wavelength, and water depth. Most characteristics of ocean waves depend on the relationship between their wavelength and water depth. Wavelength determines the size of the orbits of water molecules within a wave, but water depth determines the shape of the orbits
Explanation:
PLEASE GIVE ME BRAINLIEST
A flowerpot that has a mass of 1.5 kg is sitting on a windowsill 30 meters from the ground. Is the energy of the flowerpot potential of kinetic?
How much energy does the flowerpot have?
Answer:
It is Potential and corresponding to
90
J
.
Explanation:
Potential Energy is energy stored in the system and ready (potentially) to be changed into, say, Kinetic Energy through movement.
The general expression for Gravitational Potential Energy is:
U=mgh
where:
mg is the weight; h is the height relative to a certain reference level (the ground in this case) choosen to have zero Potential Energy.
With your data we get:
U=3⋅30=90J
In a nuclear fusion reaction, the mass of the products is _____ the mass of the reactants.
Answer:
more than
Explanation:
In a nuclear fusion reaction, the mass of the products is more than the mass of the reactants.
When a ball is tossed upward, along the way
A. the amount of kinetic energy and the amount of potential energy change
B. all of its energy is lost to friction with the air, and both kinetic and potential energy are zero at the highest point of travel.
C. its potential energy decreases and reaches zero at the highest point of travel D. its total energy increases and is at a maximum at the highest point of travel
Answer:
A
Explanation:
going upward, kinetic energy decrease and potential energy increase
Answer:
A
Explanation:
As a ball is thrown into the sky, potential energy increases and kinetic energy decreases. But, the mechanical energy ( that is the sum of the potential and kinetic energy) remains the same....
Science Will give brainless and 22 points
Answer:
Mercury 0.39 AU, 36 million miles
57.9 million km
Venus 0.723 AU
67.2 million miles
108.2 million km
Earth 1 AU
93 million miles
149.6 million km
Mars 1.524 AU
141.6 million miles
227.9 million km
Jupiter 5.203 AU
483.6 million miles
778.3 million km
Saturn 9.539 AU
886.7 million miles
1,427.0 million km
Uranus 19.18 AU
1,784.0 million miles
2,871.0 million km
Neptune 30.06 AU
2,794.4 million miles
4,497.1 million km
Pluto (a dwarf planet) 39.53 AU
3,674.5 million miles
5,913 million km
Answer:
Mercury 0.39 AU, 36 million miles 57.9 million km
Venus 0.723 AU 67.2 million miles 108.2 million km
Earth 1 AU 93 million miles 149.6 million km
Mars 1.524 AU 141.6 million miles 227.9 million km
Jupiter 5.203 AU 483.6 million miles 778.3 million km
Saturn 9.539 AU 886.7 million miles 1,427.0 million km
Uranus 19.18 AU 1,784.0 million miles 2,871.0 million km
Neptune 30.06 AU 2,794.4 million miles 4,497.1 million km
Pluto (a dwarf planet) 39.53 AU 3,674.5 million miles 5,913 million km
Explanation:
A steady increase in global temperature has been recorded between 1900 and today. Before concluding that this rise in temperature is the result of the increased burning of fossil fuels since that sametime, which of the following questions would have to be answered? *
A. What is the CO2 content in one metric ton of fossil fuels?
B. Which gases are released when burning fossil fuels?
C. What, if any, temperature rise was occurring prior to 1900?
D. None of these
Answer:
C is correct
Explanation:
Somebody can tell me what answers it is?
Answer:
D
Explanation:
The color you see is the color the object reflectes. The rest of the color are absorbed by that object.
how does force do positive work on an object?
Answer:
It can do work on an object by moving it or changing it.
Explanation:
Brainliest?
Answer:
If you push on an object, thats positive work but if you pull on the object, thats negative work
Explanation:
Anand gets into an elevator and travels 50 m straight up in a time of 5 s. He then travels in the opposite direction, straight down, for 70 m in a time of 6 s. What is his average speed and velocity, respectively, over the 11 s period?
A. 10.9 m/s, 1.82 m/s
B. 10.9 m/s, −1.82 m/s
C. 21.8 m/s, 10.9 m/s
D. −10.9 m/s, 5.2 m/s
Answer:
10.9 m/s, −1.82 m/s
Explanation:
We have,
Anand gets into an elevator and travels 50 m straight up in a time of 5 s. He then travels in the opposite direction, straight down, for 70 m in a time of 6 s.
Total time of journey is 11 seconds.
Total distance is 50 m + 70 m = 120 m
Total displacement is 50 m - 70 m = -20 m
Average speed, [tex]s=\dfrac{120\ m}{11\ s}=10.9\ m/s[/tex]
Average velocity, [tex]v=\dfrac{-20\ m}{11\ s}=-1.82 \ m/s[/tex]
So, the correct option is (b) 10.9 m/s, −1.82 m/s.
A flowerpot that has a mass of 1.5 kg is sitting on a windowsill 30 meters from the ground. Is the energy of the flowerpot potential of kinetic?
How much energy does the flowerpot have?
Answer:
Potential energy
441 joules
Explanation:
The flower pot is not moving so it does not have kinetic energy. Anything that is still and a distance from the ground does have potential energy.
Amount of energy: p=mggh
p=1.5(9.8)(30)=441 joules
The flower pot's energy is measured in potential energy since it is remaining stationary and the energy is stored, the flowerpot is not moving about so it is not kinetic energy.
The formula for potential energy is:
GPE = mgh
The m stands more mass, the g stands for gravitational energy (9.8m/s^2) and the h stands for height.
Our values for the following terms are:
M = 1.5kg
G = 9.8m/s^2
H = 30 meters
Now, we can plug it into our formula to solve for the amount of potential energy.
GPE = 1.5(9.8)(30)
First, let's multiply the gravitational energy and the height.
30 x 9.8 = 294
Then, multiply the mass by the result.
1.5 x 294 = 441
Therefore, the potential energy of the flowerpot is 441J.
How much net force is needed to accelerate a 3 kilogram skateboard at 5 m/s2 this last on is a exponent use this formula net force = mass x acceleration Will MARK BRAINLLIEST
Answer:
15 N
Explanation:
What is the velocity of a wave that has a frequency of 400 Hz and a wavelength of 0.5 meters?
Answer:
4.2
Explanation:
Are you willing to do a project?
Answer:yes
Explanation: what project
The structure of a main sequence star like our sun can hold for a long time because
A. Gravitation fore is counterbalanced by thermal expansion forces
B. The immense volume of matter
C. The rotational force
Answer: B
The immense volume of matter
Explanation:
Stars are formed by cloud and dust, draw together by gravity.
But the longevity of a main sequence star lives depends on how massive it is. An enormous massive star burns faster due to its enormous material it contains and higher core temperatures caused by greater gravitational forces. While a less massive star will burn slowly and stick around the sun for a very long period. The structure of a main sequence star like our sun can therefore hold for a long time because of the immense volume of matter of star.
3. If you increase the distance between
two objects, the gravitational force
between the two objects
A)increases
B)decreases
Answer:
B
Explanation:
ASAP PLEASE!!
When tectonic plates are strained to the point that they can no longer bend, which of the following is most likely to occur?
A. Earthquake
B. Volcanic Eruption
C. Convection Current
D. Ocean Basin Formation
Plz help! Will give brainiest!
For the girl to lift this rock, she must push her end down _____ to raise the rock _____.
A. a lot; a little
B. a little; a lot
C. a little; a little
Answer:
A is the correct answer
Explanation:
mark brainliest please
Based on the law of conservation of energy hiw can we reasonably improve a machines ability to do work
How long will it take for 64 g of a radioactive material to be reduced to 2.0 g if the half-life is 0.5 hours?
Answer:
2.5 hours is the answer according to me
A lever used to lift a 200 N object 3 meters off the ground, is doing how many Joules of work?
Answer:
6000J
Explanation:
T=m.g.h
T=200.(10).(3)
T=2000.(3)=6000J
