Answer:
500 Gram in Newton is Equal to 4.9
Explanation:
The change of 1 g ( gram ) unit for a weight and mass measure equals = into 0.0098 N ( newton earth ) as per its equivalent weight and mass unit type measure often used.
One Gram is equivalent to 0.0098066500286389 Newton. Hence, to convert Gram to Newton, we just need to multiply the number by 0.0098066500286389.
Answer:
4.9 newton
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suppose that a stream of fluid flows steadily through a horizontal pipe of varying cross-sectional diameter. neglecting viscosity, where is the fluid pressure greatest? _
In a steady flow of fluid through a horizontal pipe of varying cross-sectional diameter, neglecting viscosity, the fluid pressure is greatest where the cross-sectional diameter is smallest.
According to Bernoulli's principle, which applies to an ideal fluid flowing through a pipe, the pressure of the fluid is inversely proportional to the cross-sectional area. As the cross-sectional diameter of the pipe decreases, the area decreases, resulting in an increase in fluid pressure. Conversely, when the cross-sectional diameter increases, the area increases, leading to a decrease in fluid pressure.
Therefore, in a pipe with varying cross-sectional diameter, the fluid pressure is highest at the narrowest point or the region with the smallest cross-sectional area.
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Consider a turbojet engine mounted on a stationary test stand at sea level. The inlet and exit areas are t 1.0 atm, and 800 K respectively Calculate the static thrust of the engine
a.) Thrust-31880N
b.) Thrust 32680N
c.) Thrust -31600N
d.) Thrust- 3868 N
The static thrust of the turbojet engine mounted on a stationary test stand at sea level, with inlet and exit areas at 1.0 atm and 800 K respectively, is b.) Thrust 32680N.
To calculate the static thrust of the engine, we can use the ideal rocket equation:
Thrust = mass flow rate * exhaust velocity
The mass flow rate can be calculated using the equation:
mass flow rate = air density * inlet area * inlet velocity
The exhaust velocity can be approximated as the exit area times the exit velocity.
Given that the engine is mounted on a stationary test stand at sea level, we can assume the inlet velocity is zero. Additionally, we know the inlet and exit areas, as well as the atmospheric pressure at sea level.
By calculating the mass flow rate and the exhaust velocity using the provided information and plugging them into the ideal rocket equation, we arrive at the static thrust of approximately 32680N.
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Why do water containers and gas cans often have a second, smaller cap opposite the spout through which the fluid is poured? (Select all that apply.) to allow evaporation to let air flow in as liquid is poured out To provide a second way to pour out the liquid to keep the space above the liquid at the same pressure as outside while pouring to allow the user to check the liquid level
Estimate the net force exerted on your eardrum due to the water above when you are swimming at the bottom of a pool that is 5.3 m deep? N
EXERCISE HINTS: GETTING STARTED | I'M STUCK! An airplane takes off at sea level and climbs to a height of 435 m. Estimate the net outward force on a passenger's eardrum assuming the density of air is approximately constant at 1.3 kg/m3 and that the inner ear pressure hasn't been equalized.
The net outward force on a passenger's eardrum assuming the inner ear pressure hasn't been equalized is approximately 0.05 N.
Here are the reasons why water containers and gas cans often have a second, smaller cap opposite the spout through which the fluid is poured:
To allow evaporation to let air flow in as liquid is poured out. To provide a second way to pour out the liquid. To keep the space above the liquid at the same pressure as outside while pouring. To allow the user to check the liquid level.The net force exerted on your eardrum due to the water above when you are swimming at the bottom of a pool that is 5.3 m deep can be estimated using the following formula:
F = P * A
where:
F is the force in newtons P is the pressure in pascals A is the area of the eardrum in square metersThe pressure of the water at a depth of 5.3 m is:
P = ρ * g * h
where:
ρ is the density of water in kilograms per cubic meter
g is the acceleration due to gravity in meters per second squared
h is the depth in meters
The density of water is 1,000 kg/m3 and the acceleration due to gravity is 9.8 m/s2. So, the pressure of the water at a depth of 5.3 m is:
P = (1,000 kg/m3) * (9.8 m/s2) * (5.3 m) = 52,400 Pa
The area of the eardrum is approximately 0.0001 m2. So, the force exerted on the eardrum is:
F = (52,400 Pa) * (0.0001 m2) = 5.24 N
Therefore, the net force exerted on your eardrum due to the water above when you are swimming at the bottom of a pool that is 5.3 m deep is approximately 5.24 N.
For the airplane taking off at sea level and climbing to a height of 435 m, the net outward force on a passenger's eardrum can be estimated using the following formula:
F = P * A
where:
F is the force in newtons
P is the pressure difference in pascals
A is the area of the eardrum in square meters
The pressure difference between sea level and a height of 435 m is:
P = ρ * g * h
where:
ρ is the density of air in kilograms per cubic meter
g is the acceleration due to gravity in meters per second squared
h is the height in meters
The density of air at sea level is 1.225 kg/m3 and the acceleration due to gravity is 9.8 m/s2. So, the pressure difference between sea level and a height of 435 m is:
P = (1.225 kg/m3) * (9.8 m/s2) * (435 m) = 5,025 Pa
The area of the eardrum is approximately 0.0001 m2. So, the force exerted on the eardrum is:
F = (5,025 Pa) * (0.0001 m2) = 0.05 N
Therefore, the net outward force on a passenger's eardrum assuming the inner ear pressure hasn't been equalized is approximately 0.05 N.
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John has done work of 1000 J while pushing a table using 300N force. find the distance covered by the table along the direction of the force.
Answer:
distance = (10/3) m or 3.33... m
Explanation:
When the direction of force and distance is the same,
Work = Force × distance
So,
1000J = 300N × distance
=> 1000J/300N = distance
=> (10/3) m = distance
=> 3.33... m = distance
A ball is thrown into the air at an angle of 50 from the horizontal with an initial velocity of 12 m/s. Calculate both of the steps in the solution: 1- The time of the ball's flight in the air 2- The maximum height the ball reaches
Answer:
\(\begin{gathered} (1)\Rightarrow t=1.8760 \\ (2)\Rightarrow h_{\max }=4.0268m \\ \end{gathered}\)Explanation: A ball is thrown into the air at an angle of 50 degrees with a horizontal, and initial velocity of 12m/s. (i) we to find the total time of the flight, and (ii) maximum height that the ball reaches
(i) Total flight time:
To find the total time, we much keep in mind that it is the time that the bill would take to reach the same height level as its starting height, the equation that will be used is as follows:
\(\begin{gathered} y(t)=y_o+v_o\sin (\theta)t-\frac{1}{2}gt^2\Rightarrow(1) \\ y_o=0 \\ v_o=12ms^{-1} \\ g=9.8ms^{-2} \end{gathered}\)By setting equation (1) equal to zero and solving for the "t" , the total flight time can be solved, it can be done as follows:
\(\begin{gathered} y_o+v_o\sin (\theta)t-\frac{1}{2}gt^2=0 \\ \therefore\rightarrow \\ 0+(12ms^{-2})\sin (50)t-\frac{1}{2}(9.8ms^{-2})t^2=0 \\ \therefore\rightarrow \\ (12ms^{-2})\sin (50)t=\frac{1}{2}(9.8ms^{-2})t^2\Rightarrow t=\frac{(2)(12ms^{-2})\sin(50)}{(9.8ms^{-2})} \\ t=\frac{(2)(12ms^{-2})(0.76604444)}{(9.8ms^{-2})}=1.8760s \\ t=1.8760 \end{gathered}\)(ii) Maximum height of the ball:
The maximum height that the ball can reach would be attained in half of the total flight time, therefore we need to simply find the y(t) at half of the total flight time, this is done as follows:
\(\begin{gathered} t_{h_{}}=\frac{t}{2}\Rightarrow t_{h_{}}=\frac{1.8760}{2}=0.938s \\ t_{h_{}}=\text{ }0.938s \\ \therefore\rightarrow \\ y(t_{h_{}}=\text{ }0.938s)=(12ms^{-2})\sin (50)(0.938s)-\frac{1}{2}(9.8ms^{-2})(0.938s)^2 \\ y(t_{h_{}}=\text{ }0.938s)=(12ms^{-2})(0.76604444)(0.938s)-\frac{1}{2}(9.8ms^{-2})(0.938s)^2 \\ y(t_{h_{}}=\text{ }0.938s)=8.623-4.5962=4.0268m \\ y(t_{h_{}}=\text{ }0.938s)=h_{\max } \\ \therefore\rightarrow \\ h_{\max }=4.0268m \end{gathered}\)The most correct notation for a comfortable room temperature would be _____° F.
A) 76.44
B) 7.64
C) 764
D) 76.4
E) 7644
The most correct notation for a comfortable room temperature in Fahrenheit would be (D) 76.4°F.
The recommended comfortable temperature range for indoor spaces is typically between 68°F and 72°F (20°C to 22.2°C).
However, some people may prefer temperatures slightly above or below this range, depending on their individual preferences and the specific context.
The answer options provided do not fall within this temperature range and are not reasonable temperatures for a comfortable indoor environment. Option (A) 76.44°F and option (E) 7644°F are both too high and unrealistic for indoor temperatures, while option (B) 7.64°F and option (C) 764°F are too low and well below freezing temperature. Option (D) 76.4°F falls within the possible range of comfortable temperatures, although it may still be slightly higher than some people's ideal temperature.
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the mean of a dataset is 10 and the standard deviation is 2. what is the z-score of the data value 4
The z-score of the data value 4 is -3.
To calculate the z-score of a data value,
we use the formula z = (x - μ) / σ,
where
x is the data value,
μ is the mean of the dataset, and
σ is the standard deviation of the dataset.
In this case, the mean of the dataset is 10 and the standard deviation is 2. Therefore, when finding the z-score of the data value 4, we calculate (4 - 10) / 2 = -3.
Therefore, the z-score of the data value 4 is -3.
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Why is temperature a good criterion for searching for Earth like exoplanets?
Answer:
Liquid water is essential for life to exist. Water can occur in a liquid state only within a specific temperature range, so knowing the temperature range on a planet will help astronomers predict whether life exists on that planet.
Block B, which has a mass of 45 kg, is moving at a constant velocity across a flat surface. As shown in the diagram, it is being pulled forward by a force of 100 N. What is the magnitude of the force represented by the left-pointing arrow in the diagram?
0 N
440 N
44 N
100 N
Answer:
\(100\; {\rm N}\).
Explanation:
The block is in a translational equilibrium since the velocity of the block is constant.
Because velocity of the block is not changing, acceleration of the block would be \(0\). By Newton's Laws of Motion, the net force on this block would also be \(0\!\), meaning that forces on the block would be balanced.
Specifically, forces on this block need to be balanced in the horizontal direction. There are two forces on this block in that direction:
The \(100\; {\rm N}\) force pointing to the right, andThe force pointing to the left, which needs to be found.For these two forces to balance each other, their magnitudes need to be the same. Hence, the force pointing to the left should also have a magnitude of \(100\; {\rm N}\).
A block of mass 20 kg is acted upon by a force F=30N at an angle 530 with the horizontal in downward direction as shown. The coefficient of friction between the block and the horizontal surface is 0.2. The friction force acting on the block by the ground is (g=10m/s2)
The friction force acting on the block by the ground is approximately 35.2 N.
The block of mass 20 kg is acted upon by a force F = 30 N at an angle of 53 degrees with the horizontal in a downward direction. The coefficient of friction between the block and the horizontal surface is 0.2, and the gravitational acceleration (g) is 10 m/s^2.
To determine the friction force acting on the block, we first need to find the normal force and the horizontal component of the applied force. We can do this using trigonometry and Newton's laws.
The vertical component of the applied force is Fv = F * sin(53°), which is approximately 24 N. The weight of the block is W = mg, or 20 kg * 10 m/s^2, which equals 200 N. The normal force (N) is the sum of the vertical component of the applied force and the weight of the block, so N = 200 N - 24 N, which equals 176 N.
The horizontal component of the applied force is Fh = F * cos(53°), which is approximately 18 N. The friction force (Ff) can be calculated using the equation Ff = μ * N, where μ is the coefficient of friction. Therefore, Ff = 0.2 * 176 N, which equals 35.2 N.
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An optical device that reflects light ?
Answer:
Mirror
Explanation:
Define Force
Check all that apply
Answer:
Push or pull
Explanation:
Are Earthquakes by themselves dangerous? In other words, is there another factor that makes them potentially so deadly?
Answer:
Is this multiple choice?
Earthquake damage is caused by ground shaking, cracks, landslides, tsunamis, and liquefaction. Earthquake damage from fires is the most important side effect.
Earthquake-induced ruptures can begin with violent ground shaking, breaking the ground, causing landslides, and liquefying the surface. The devastating tremors of a major earthquake can be felt hundreds of kilometers away.
All areas of the Golden State are earthquake-prone. Most of us live within 30 miles of active disease. Earthquakes can shake homes from their foundations, liquefy the ground, and cause landslides.
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A wire can be broken by applying load of 200N. The force required to break another wire of the same length and same material, but double in diameter is
The force needed to break another wire of the same length and material but twice the diameter is 200N.
Because the wires are made of the same material, their modulus of elasticity must be the same.
As a result, the ratio of longitudinal stress to longitudinal strain (Young's Modulus of Elasticity) must be the same. Now, the strains in both wires must be the same before they break.
Therefore,
stress = Young's modulus × strain,
both wires must be the same.
Because the second wire has a diameter twice that of the first, its area of cross section is four times that of the first. As a result, in order to generate the same stress, the force applied to the second wire must be four times that applied to the first wire.(since stress = force/cross section area).
Thus, the force required to break the second wire is 4200=800N.
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Sammy feels an ocean breeze as he plays volleyball at the beach. Why do ocean winds or sea breezes blow toward shore during the day? Question 2 options: Air over the beach heats up, rises and is replaced by ocean air. Earth's rotation causes air to blow toward land. he energy of the ocean storms push air toward shore. Ocean air is less dense, so it rises to replace air over the land.
The heat coming from the sun warms the land more quickly than the sea. As a result of these, the air near the land warm up and rises and the cooler air from the sea moves in to replace the risen air. The correct answer is option A
There will be heat transfer from a region of higher temperature to the region of lower temperature. But in the case of land and sea breeze, the transfer of heat are the result of convectional current in nature. Because the land is a better absorber of heat and also has a lower specific heat capacity compare to sea, during the day, the heat coming from the sun warms the land more quickly than the sea. As a result of these, the air near the land warm up and rises.
The cooler air from the sea moves in to replace the risen air.
Why do ocean winds or sea breezes blow toward shore during the day ? It is because air over the beach heats up, rises and is replaced by ocean air.
Therefore, option A is correct
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which of the following is not an example of mechanical action? group of answer choices electrically charged beaters of the bells on the clavecin electrique digital sampling machines levers and hammers inside an acoustic piano rotors (tonewheels) of a telharmonium
Digital sampling machines are not an example of mechanical action.
What is mechanical action?
Mechanical action refers to the physical movement of mechanical components to produce a sound or perform a specific function. This can include a wide range of actions, such as the striking of hammers on strings in a piano, the rotation of tonewheels in a Hammond organ, or the movement of valves in a trumpet.
Mechanical action can also be found in other types of machinery and equipment, and tools such as engines, gears, and levers, where physical movement is used to perform a specific task or function.
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Function of bones in the body?
Any of the pieces of hard whitish tissue making up the skeleton in humans and other vertebrates.
The calcified material of which bones consist
20m/s at 275 degrees from the x-axis
So, the magnitude of velocity concerning:
x-axis approximately 1.74 m/s to the x-positive, andy-axis approximately -19.92 m/s (19.92 m/s to the y-negative).Introduction and Formula UsedHi! Here I will help you to solve problems related to the velocity vector. In this problem, we know that a particle moves at a certain speed with an angle (\( \sf{\theta} \)) on the x-axis. Of course, with conditions like this, velocity can be described on the x or y-axis. The result of the x-axis velocity is horizontal movement. On the other hand, the y-axis velocity is vertical movement. See the equation below to know the magnitude of velocity concerning the x and y-axis.
Velocity respect to the x-axis\( \boxed{\sf{\bold{v_x = v_i \cdot \cos(\theta)}}} \)
Velocity respect to the y-axis\( \boxed{\sf{\bold{v_y = v_i \cdot \sin(\theta)}}} \)
With the following condition:
\( \sf{v_i}\) = the initial velocity\( \sf{\theta}\) = elevation angle\( \sf{v_x}\) = the velocity respect to the x-axis\( \sf{v_y}\) = the velocity respect to the y-axisProblem SolvingWe know that:\( \sf{v_i}\) = the initial velocity = 20 m/s\( \sf{\theta}\) = elevation angle = 225°What was asked?\( \sf{v_x}\) = the velocity respect to the x-axis = ... m/s.\( \sf{v_y}\) = the velocity respect to the y-axis = ... m/s.Step by step:Find the magnitude of velocity respect to the x-axis\( \sf{v_x = v_i \cdot \cos(\theta)} \)
\( \sf{v_x = 20 \cdot \cos(275^{\circ})} \)
\( \sf{\bold{v_x \approx 1.74 \: m/s}} \)
Find the magnitude of velocity respect to the y-axis\( \sf{v_y = v_i \cdot \sin(\theta)} \)
\( \sf{v_y = 20 \cdot \sin(275^{\circ})} \)
\( \sf{\bold{v_y \approx -19.92 \: m/s}} \)
ConclusionSo, the magnitude of velocity concerning:
x-axis approximately 1.74 m/s to the x-positive, andy-axis approximately -19.92 m/s (19.92 m/s to the y-negative)slope or velocit ime graph represent
2. What is instantaneous acceleration?
3. What is unit vector?
Answer:
Please check the explanation.
Explanation:
The slope of the velocity-time graph illustrates the change in velocity with respect to change in time.
In other words, the acceleration of the object is defined by the slope of a velocity graph. The acceleration can be obtained by finding the slope at a particular time.
Hence, the slope of the velocity time graph represent represents acceleration.
2. Also the acceleration of any object, like a car or bike, at some discrete instant in time 't' is termed as instantaneous acceleration which can be determined if we may take the derivate of the given velocity function.
3. A vector that has a direction and magnitude of 1 is termed as a unit vector, often called a direction vector.
Which happens when sound waves enter a vacuum?
A. They are reflected.
B. They move slower
C. They move faster
D. They stop moving
If you start with a sample containing 10^10 nuclei that have half-life 2.5 hours, what is the activity of the sample after 5 hours?
The activity of the sample after 5 hours is 2.5 * 10^9 dps or 2.5 * 10^9 Bq
The activity of a radioactive sample refers to the rate at which its nuclei decay, and it is typically measured in units of disintegrations per second (dps) or becquerels (Bq).
To determine the activity of the sample after 5 hours, we need to consider the concept of half-life. The half-life of a radioactive substance is the time it takes for half of the nuclei in a sample to decay.
Given that the half-life of the nuclei in the sample is 2.5 hours, we can calculate the number of half-lives that occur within the 5-hour period.
Number of half-lives = (Time elapsed) / (Half-life)
Number of half-lives = 5 hours / 2.5 hours = 2
This means that within the 5-hour period, two half-lives have occurred.
Since each half-life reduces the number of nuclei by half, after one half-life, the number of nuclei remaining is (1/2) * (10^10) = 5 * 10^9 nuclei.
After two half-lives, the number of nuclei remaining is (1/2) * (5 * 10^9) = 2.5 * 10^9 nuclei.
The activity of the sample is directly proportional to the number of remaining nuclei.
Therefore, After 5 hours, the sample has an activity of 2.5 * 109 dps or 2.5 * 109 Bq.
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Movement of a body part around a central point or axis is known as:
a) Flexion
b) Extension
c) Rotation
d) Abduction
The movement of a body part around a central point or axis is known as rotation.
Rotation refers to the circular movement of a body part around its axis or a fixed point. It involves the turning or twisting motion of a body segment without changing its position in space.
Flexion (a) is the movement that decreases the angle between two body parts, typically bending or decreasing the joint angle. The extension (b) is the opposite movement, increasing the angle between two body parts, typically straightening or increasing the joint angle. Abduction (d) refers to the movement of a body part away from the midline of the body.
During rotation, the body part or segment moves around an imaginary line called the axis. This axis can be within the body itself or located externally. For example, when we rotate our head from side to side, the axis of rotation is an imaginary line passing through the neck.
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For each situation determine the net force acting upon the object. For each situation, write if the forces are BALANCED or UNBALANCED.
Answer:
A: Balanced
B: Unbalanced
C: Balanced
D: Unbalanced
Describe the processes necessary for social learning to occur.
Please HELP!!!!!!!
Answer:
Social learning occurs when four processes are present: 1) Attention: The learning organism must be paying attention to the modeled behavior. If there is no attention, the behavior cannot be processed into memory. 2) Retention: The learning organism must remember the behavior that was modeled.
Explanation:
Hope this helps.
Answer:
Social learning occurs when four processes are present:
1) Attention: The learning organism must be paying attention to the modeled behavior. If there is no attention, the behavior cannot be processed into memory.
2) Retention: The learning organism must remember the behavior that was modeled. If the behavior is not retained, it cannot be replicated.
3) Reproduction: The learning organism must be capable of producing the behavior. If the behavior is too skilled or impossible for the organism to replicate, then the reproduction will be unskilled or halting.
4) Motivation: The learning organism must be motivated to perform the behavior, or motivated not to perform the behavior. If the organism is not motivated to perform the behavior, and even if the organism is able to perform the behavior and knows how, it may not.
Which of the following accounting principles prescribes that a company record its expenses incurred to generate the revenue reported?.
Answer:
Matching principle
Explanation:
Matching principle is an accounting principle for recording revenues and expenses. It requires that a business records expenses alongside revenues earned.
A 50kg skater is moving due east at a speed of 3m/s before colliding into another skater of mass 60kg moving in the opposite direction at a speed of 7m/s. After the collision, the two skaters hold on to each other. In which direction will they move? What is the speed of the two skaters?
What is the difference between potential and kinetic energy? *
1 point
A. Potential energy is energy due to motion. Kinetic energy is stored energy.
B. Potential energy is stored energy. Kinetic energy is energy due to motion.
C. Potential energy results from unbalanced forces. Kinetic energy results from balanced forces.
D. Potential energy results when there is a net force. Kinetic energy results when there is no net force.
Answer:
B
Explanation:
Potential energy is stored energy based on the position of an object.
Kinetic Energy is energy throughout motion.
A doctor is using a treadmill to assess the
strength of a patient's heart. He sets the
1,75 m long treadmill to an incline of 17 degrees.
How high is the end of the treadmill raised?
a 0.71 m
0.46 m
0.54 m
0.62 m
The answer is 0.47 m, which is closest to the option (A) 0.71 m.
How to solve this problemFirst we can use trigonometry. The height of the end of the treadmill raised is the opposite side of the right triangle, and the length of the treadmill is the hypotenuse.
The angle of inclination is the angle between the height and the hypotenuse, so we can use the sine function to find the height:
sin(17°) = opposite/hypotenuse
The length of the treadmill is 1.75 m, so:
opposite = sin(17°) x 1.75 m
opposite = 0.472 m
Therefore, the height of the end of the treadmill raised is approximately 0.47 m.
So the answer is 0.47 m, which is closest to the option (a) 0.71 m.
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definition of mass number
Answer:
The total number of protons and neutrons in a nucleus.
Explanation:
I memorized it.
Answer:
Mass number of an atom is defined as the sum of the number of protons and number of neutrons.
what will most likely happen if a sound wave moves from the air through a solid
a. it will increase wavelength
b. it will decrease in speed
c. it will increase in speed
d. it will decrease in wavelength
Answer:
C. it will increase in speed
Explanation:
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