It will change shape because the comprehensive stress layer causing it to bend slightly. Thus, thinner material like sheet metal will apparently change its shape. This is usually the reason why someone/people would peen sheet metal. In addition, Shot peening is cold working process done to metal parts for fatigue resistance. And the process is done by placing the part surface into compression.
Which elements together make up seven percent of the earths crust? calcium and iron calcium and sodium potassium and magnesium potassium and sodium
Answer:
B: calcium and sodium
Explanation:
you can see it on the pie chart, sodium and calcium make up 7%
When a pendulum swings,if it is not continuously pushed, it will stop eventually because some of its energy is changed into ____ energy?
Astronauts on our moon must function with an acceleration due to gravity of 0.170 g. If an astronaut can throw a certain wrench 12.0 m vertically upward on earth, how high could he throw it on our moon if he gives it same starting speed in both places?
Final answer:
An astronaut could theoretically throw a wrench approximately 73.5 meters high on the Moon, which is about 6 times higher than on Earth, due to the lower gravitational acceleration.
Explanation:
The question is about how high an astronaut could throw a wrench on the Moon compared to the Earth given the same starting speed. The gravitational acceleration on the Moon is 0.170 g, or approximately 1.6 m/s², which is about 1/6 of that on Earth (9.8 m/s²). Therefore, if an astronaut can throw a wrench 12.0 meters high on Earth, we can calculate how high it would go on the Moon using the ratios of the accelerations due to gravity.
First, we recognize that the maximum height reached by an object thrown vertically is inversely proportional to the local gravitational acceleration. Mathematically:
Height on Earth / Height on Moon = Acceleration due to gravity on Moon / Acceleration due to gravity on Earth
Substituting the given values:
12.0 m / Height on Moon = 1.6 m/s² / 9.8 m/s²
Solving for the height on the Moon gives:
Height on Moon = 12.0 m * (9.8 m/s² / 1.6 m/s²) = 12.0 m * 6.125 = 73.5 m
Therefore, the astronaut could throw the wrench approximately 73.5 meters high on the Moon, assuming no air resistance and the same initial throwing speed.
What combines to form bonds in compounds?
A.atoms of elements
B.molecules
C.types of minerals
D.valences
The moon lies roughly 384,000 km from earth and the sun lies 150,000,000 km away. if both have the same angular size, as seen from earth, how many times larger than the moon is the sun?
A student puts air into a balloon and ties it shut. Which action listed below will lead to a decrease in pressure inside the balloon?
A) Leaving the balloon inside a car on a hot, summer day.
B) Compressing the balloon with both hands.
C) Sticking the balloon in a freezer.
D) Taking the balloon to the top of a hill.
Answer:C) Sticking the balloon in a freezer.
Explanation:
Sticking the balloon in a freezer will cause the pressure to drop because the air inside will become colder and lead to the particles having lower kinetic energies. In, turn their rate of collisions will decrease and cause the pressure to drop. Leaving the balloon in a hot car and squeezing the balloon will cause a pressure increase and taking the balloon to the top of a hill may or may not cause a pressure increase.
Answer:
C) Sticking the balloon in a freezer.
Explanation:
When we put the balloon into the freezer then due to decrease in the temperature we can find the effect on its pressure using ideal gas Law
It is given as
[tex]PV = nRT[/tex]
so here on decreasing the temperature if volume is assumed to be constant the pressure is given as
[tex]P = \frac{nR}{V} T[/tex]
so pressure will also decrease on decreasing the temperature
so correct answer will be
C) Sticking the balloon in a freezer.
Does the sun always shine directly overhead at the equator at noon
A student pulls a rope attached to a box of books and moves the box down the hall. The student pulls with a force of 175N at an angle of 25.0º above the horizontal. The box has a mass of 35.0 kg and the coefficient of kinetic friction between the box and the floor is 0.280. Find the acceleration of the box.
1.65 m/s²
2.38 m/s²
3.72 m/s²
9.37 m/s²
Four forces act on a hot air balloon as shown below. Find the magnitude and direction of the resultant force on the balloon. Show your work and explain your answer
When jumping, a flea accelerates at an astounding 1500 m/s2 , but over only the very short distance of 0.41 mm ?
Final answer:
To compute the flea's acceleration, Newton's second law is employed, considering the vertical and horizontal forces separately, and then combining these to find the magnitude and direction using trigonometry.
Explanation:
The question involves calculating the direction and magnitude of the acceleration of a flea, considering both the force exerted by the flea and the force of the breeze, as well as the gravitational force. To find the acceleration, we apply Newtons second law, which states that the acceleration of an object is equal to the net force acting upon it divided by the object's mass, or № = F / m. We can break down the forces into two components: vertical and horizontal.
Vertically, the flea exerts a force downward and gravity pulls it downward, while horizontally, the breeze exerts a force. To find the acceleration in the vertical direction, add the force exerted by the flea to the weight of the flea (mass times gravitational acceleration) and divide by the flea's mass. For the acceleration in the horizontal direction, divide the force of the breeze by the mass of the flea. Since these accelerations are perpendicular, we can use Pythagorean theorem to find the resultant magnitude and trigonometry to find the overall direction of the acceleration.
When a perfume bottle is opened, some liquid changes to gas and the fragrance spreads around the room. Which sentence explains this?
a) Gases do not have a definite volume.
B)The particles of gases are closely packed.
C)The force of attraction between particles in gases is very high.
D)Gases are not matter.
Answer:
Gases do not have definite volume.
Explanation:
Solids, liquids and gas are three forms of matter. Solids have fixed shape and volume. Liquids do not have fixed shape but have fixed volume. Gases neither have fixed shape nor volume. The particles of solid are tightly packed whereas the particles of gas are very loosely packed and the force of attraction between the particles of gas is very weak.
When the perfume bottle is opened, some liquid changes to gas and fragrance spreads around the room because the particles of gas are very loosely packed and the force of attraction between the particles of gas is very weak. The gas particles do not have fixed volume and easily spread.
An airplane starts at rest and accelerates down the runway for 20 s. At the end of the runway, its velocity is 80 m/s north. What is its acceleration?
The acceleration of an airplane will be "4 m/s²".
According to the question,
The velocity is:
[tex]v_1 = 0[/tex][tex]v_2 = 80 \ m/s[/tex]The time is:
[tex]t = 20 \ seconds[/tex]As we know,
The formula of acceleration is:
→ [tex]A = \frac{Change \ in \ velocity}{Time}[/tex]
or,
→ [tex]A = \frac{v_2-v_1}{t}[/tex]
By substituting the values, we get
→ [tex]= \frac{80-0}{20}[/tex]
→ [tex]=\frac{80}{20}[/tex]
→ [tex]= 4 \ m/s^2[/tex]
So the above answer is right.
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A runner makes one lap around a 200 m track in a time of 25.0 s. What was the runner's average speed?
Why does a gun recoil when a bullet is fired?
Why does a gun recoil when a bullet is fired?
Explanation:When a bullet is fired, the gun exerts a force on the bullet through the trigger (this is action) in a particular direction. According to Newton's Third Law, we know to every action there is an equal and opposite reaction; action and reaction act on different bodies. So, the bullet will also exert an equal and opposite reaction on the gun in the opposite direction. That is why a gun recoils when a bullet is fired from it.
Hope it helps.ray4918 here to help
a circular flow of warmer fluid and cooler fluid is called a(n) _________ PLEASE HELP
What does newtons first law of motion state about objects on which forces are balanced?
A scale model of a race car is 18.2 centimeters long and 6.9 centimeters long. each centimeter on the model represents 0.3 meters on the actual car. how long is the actual car
The actual car is 5.46 meters long.
To determine the length of the actual car based on its scale model, first note the given details:
The model car is 18.2 centimeters long.Each centimeter on the model represents 0.3 meters on the actual car.We can calculate the length of the actual car using the formula:
Length of actual car = (Length of model car in cm) × (Scale factor in meters/cm)
Substituting the given values:
Length of actual car = 18.2 cm × 0.3 meters/cm = 5.46 meters
Thus, the actual car is 5.46 meters long.
Does knowing the distance between two objects give you enough information to locate the objects
No, because a single distance could
correspond to a variety of different positions of the objects.
Why are weight and mass used synonymously on earth?
Mass and weight are often used interchangeably on Earth because the force of gravity is relatively constant. However, in science, mass and weight have distinct meanings. Mass is the measure of how much matter is in an object, while weight is the measure of the force of gravity acting on an object.
Explanation:Mass and weight are often used interchangeably in everyday language, but in science, they have distinct meanings. Mass is the measure of how much matter is in an object, while weight is the measure of the force of gravity acting on an object. On Earth, weight and mass are used synonymously because the force of gravity is relatively constant across the planet. However, it is important to remember that weight can vary in different locations, whereas mass remains constant.
what is the force driving all of these transport mechanisms?
Active transport includes the utilization of vitality to move particles against a main impetus or, as such, up an electrochemical angle. There are two essential types of Active transport: Primary active utilizes the vitality source (ATP) to straightforwardly ship atoms.
Further Explanation:
Force driving:
Main impetus is a term having more extensive importance than the term Force. To place it in basic words, the Cause of any wonder in nature is the Driving Force of/in that marvel. This reason can likewise be an option that is other than the Force (as saw by and large, which is mechanical power estimated in Newton or pounds).
transport mechanism:
To move substances against a focus or electrochemical angle, a cell must utilize vitality. Dynamic vehicle components do only this, consuming vitality (frequently as ATP) to keep up the correct centralizations of particles and atoms in living cells.
the two kinds of transport machanism:
The two principle kinds of transport into and out of cells incorporate aloof transport and dynamic transport.
Active transport:
Active transport is the development of particles over a film from an area of their lower focus to a locale of their higher fixation against the focus inclination. Dynamic vehicle requires cell vitality to accomplish this development.
Passive transport:
Passive transport is a development of particles and other nuclear or atomic substances crosswise over cell layers without need of vitality input. In contrast to Active transport, it doesn't require a contribution of cell vitality since it is rather determined by the propensity of the system to develop in entropy.
Subject: physics
Level: High School
Keywords: Force driving, transport mechanism, the two kinds of transport mechanism, Active transport, Passive transport.
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The force driving all of these transport mechanisms is the diffusion down the concentration gradient.
Diffusion is the process of movement of molecules under the higher-to-lower concentration gradient. Transport by diffusion of the molecule down its concentration gradient. The transport mechanism is a spontaneous process that requires no energy.
The transport mechanism is of two types that transport molecules through any biological membrane. These are active and passive transport. Passive transport is the common mechanism called diffusion, which occurs along a concentration gradient from high to low concentration. No energy is required for this process.
Hence, the force driving all of these transport mechanisms is because of diffusion down the concentration gradient.
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Assuming constant temperature, what volume would a gas occupy at 82.3 kpa if the volume is 344 cm3 at 110 kpa
Without friction, what force is needed to maintain a 1,000 kg car in uniform motion for 30 minutes?
three strategies which local municipality is implementing in addressing the issue
Having and drinking hygienic
water is human right and is vital to life. The water should be tested, treated
and filtered to remove any contaminants that can lead do sickness. Some of the
strategies in which local municipality is implementing in addressing the topic of lack of clean water are:
1. Good monitoring of the water supplies
2. Desalination – this is removal of mineral components from saline water
especially salt. The procedure is more expensive but is a way to reuse water
3. Campaign for more proficient and more wisely usage of the
water in order to make the people conscious of the fact how important the
natural resource water is.
The wavelength of red light is 650 nanometers. how much bigger is the wavelength of a water wave that measures 2 meters?
we know that
[tex] 1 [/tex] nanometer is equal to [tex] 10^{-9} [/tex] meters
so
[tex] 650\ nm [/tex]------> convert to meters
by proportion
[tex] \frac{1}{10^{-9}}\frac{nm}{m} = \frac{650}{x} \frac{nm}{m} \\ \\ x=650*10^{-9} \ nm\\ \\ x=6.5*10^{-7} \ m [/tex]
[tex] Wave\ length\ of\ red\ light = 6.5*10^{-7}\ m [/tex]
[tex] Wave\ length\ of\ a\ water = 2\ m [/tex]
To calculate how much bigger is the wavelength of a water
Divide [tex] 2\ m [/tex] by [tex] 6.5*10^{-7}\ m [/tex]
so
[tex] \frac{2}{6.5*10^{-7}} =3.08*10^{6} [/tex]
therefore
the answer is
[tex] 3.08*10^{6}\ times\ bigger [/tex]
The wavelength of the water wave is 3 x 10⁶ times bigger than that of the red light.
The wavelength of a waveform signal that is propagating in space or over a wire is measured by the separation between identical points, adjacent crests in the adjacent cycles.
Given that the wavelength of red light is 650 nanometers.
We know that 1 nanometer = 10⁻⁹meter
In order to convert 1 nanometer into meter, it should be multiplied by 10⁻⁹.
So, 650 nm = 650 x 10⁻⁹
650 nm = 0.65 x 10⁻⁶
The wavelength of the given water wave = 2 m
So, comparing the wavelength of the red light with that of the water wave,
2/ 0.65 x 10⁻⁶ = 3 x 10⁶
Therefore, the wavelength of the water wave is 3 x 10⁶ times bigger than that of the red light.
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what is the density of a salt solution if 50.0 ml has a mass of 57.0 g?
Density of given salt solution is 1.14 gram / milliliter
Given:
Mass of salt solution = 57 gram
Volume of salt solution = 50 milliliter
Find:
Density of a salt solution
Computation:
⇒ Density = Mass / Volume
⇒ Density of a salt solution = Mass of salt solution / Volume of salt solution
⇒ Density of a salt solution = 57 / 50
⇒ Density of a salt solution = 1.14 gram / milliliter
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What is the largest mountain free land area in europe it stretches 2000 miles?
The East European Plain is the largest mountain-free land area in Europe. It expands roughly 2000 miles and has a variety of geographic features including ice blocks reaching 2 to 3 kilometers in height.
Explanation:The largest mountain-free land area in Europe is the East European Plain, also known as the Russian Plain. This geographical feature stretches for about 2000 miles and is roughly a thousand kilometers wide. The structure of the East European Plain exhibits intriguing cells or polygons that have an average width of more than 30 kilometers.
Despite no large mountains, the Plain shows diversity with some areas like the ice blocks in the middle, which are of frozen water and reach heights of nearly 2 to 3 kilometers. This example lends an interesting insight into the geomorphological features of the area despite not being classified as a mountain.
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Why is force not on a scalar quantity??
Answer:
Explanation:
Scalar quantity is described as such quantities measured which has only magnitude but not direction.
Force when applied on any object is always denoted and comes with direction. It is always necessary to represent force is acting on which direction.
Hence force is not a scalar quantity. It is a vector quantity as it has magnitude as well as direction.
A ball is dropped from a height of 10 meters how long was the ball in the air and what is the speed when it hits the ground
A long jumper jumps at a 20-degree angle and attains a maximum altitude of 0.6 m. What is her initial speed? [10m/s] How far is her jump? [6.59m]
I need someone to explain to me how to get the answers listed above my showing a detailed step to step process.
The initial speed of the long jumper is calculated by finding the upward component of her velocity caused by her jumping at a 20-degree angle and achieving a maximum height of 0.6 m, then determining the total velocity by dividing this by the sine of the launch angle. The distance of her jump is found by applying these values in the formula for the range of a projectile. Both calculations assume no air resistance.
Explanation:In this problem, the initial speed of the jumper is determined using the physics concepts of projectile motion.
To find the initial speed, first, we compute the upward component of the velocity using the formula ਙ = √(2*g*h), where g is the acceleration due to gravity (approximately 9.81 m/s²), and h is the maximum height (in this case, 0.6 m). The upward component of the velocity comes out to be approximately 3.443 m/s.
Second, we determine the initial speed by dividing the upward component of the velocity by the sine of the angle, which in this case is 20 degrees. This gives us an initial speed of approximately 10 m/s.
The distance of the jump (or the range of the projectile) can be calculated using the formula R = (vₒ²/g) * sin(2θ), where R is the range, vₒ is the initial velocity, g is the acceleration due to gravity, and θ is the launch angle. Substituting the values, the range comes out to be approximately 6.59 m.
These answers are based on ignoring any effects of air resistance.
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A car is rounding a curve that is the arc of a circle with a radius of r . if the car has a constant speed of 10 m/s, and its acceleration is 5 m/s2 , what is the radius of the curve?
Final answer:
The radius of curvature for a car rounding a curve with a constant speed of 10 m/s and a centripetal acceleration of 5 m/s2 is calculated to be 20 meters.
Explanation:
The problem requires us to find the radius of curvature when a car is rounding a curve with a centripetal acceleration. Centripetal acceleration (a) is given by the formula a = v² / r, where v is the constant speed of the car and r is the radius of curvature. Knowing that the car has a constant speed (10 m/s) and a centripetal acceleration (5 m/s²), we can rearrange this formula to solve for the radius r as follows:
r = v² / a
Substituting the given values:
r = (10 m/s)² / (5 m/s²)
r = 100 m²/s² / 5 m/s²
r = 20 m
Therefore, the radius of curvature of the curve is 20 meters.
What happens to the gas pressure within a sealed gallon can when it is heated? when it is cooled?