An object accelerates 12.0 m/s2 when a force of 6.0 newtons is applied to it. What is the mass of the object?

Answer: At least 100 billion stars, including our Sun, make up the Milky Way, a spiral galaxy with a diameter of around 100,000 light-years. In the Milky Way, where are we located? The Orion Arm, also known as the Orion Spur, is a short, incomplete arm between the Sagittarius and Perseus arms that is close to where our Sun is positioned.

Explanation:

Answer:

its air

give me thanks

Answer:

Air

Explanation:

give me a thanks its 100% right

If one ball is dropped at rest from a height of h = 65 m.  The acceleration of the two balls is: -9.8 m/s^2 for both balls.

Let's start by finding the time it takes for the two balls to meet. We know that the ball thrown upward starts from rest, so its initial velocity is 0 m/s. We can use the following kinematic equation:

y = v_i*t + (1/2)at^2

where y is the displacement (in this case, it is the distance between the two balls), v_i is the initial velocity, a is the acceleration, and t is the time. We can set y equal to the initial height of the dropped ball, which is h = 65 m. For the ball thrown upward, the initial position is y = 0.

For the dropped ball:

y = h = 65 m

v_i = 0 m/s

For the ball thrown upward:

y = 0

v_i = 0 m/s

Using the given information, we can solve for t:

h = (1/2)at^2

65 m = (1/2)*(-9.8 m/s^2)t^2

t = sqrt(65 m / (1/2(-9.8 m/s^2))) ≈ 3.64 s

So it takes about 3.64 seconds for the two balls to meet.

Now, we can find the acceleration of the two balls. For the dropped ball, the acceleration is simply the acceleration due to gravity, which is -9.8 m/s^2. For the ball thrown upward, the acceleration is also the acceleration due to gravity, but with a negative sign since it is moving in the opposite direction of gravity. Therefore, the acceleration of the two balls is:

a = -9.8 m/s^2 for both balls

This means that both balls experience the same acceleration due to gravity, regardless of their initial velocities.

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when Force (N) is 10.0 Length (m) is 0.60

when Force (N) is 8.0 Length (m) is 0.40

when Force (N) is 4.0 Length (m) is 0.20

when Force (N) is 4.0 Length (m) is 0.20

when Force (N) is 2.0 Length (m) is 0.10

chatgpt

49. To find the length of a pendulum that has a period of 2.3 seconds on the Moon, where the gravitational acceleration (g) is 1.6 N/kg, we can use the formula:

Period (T) = 2π√(Length (L) / g)

Substituting the given values:

2.3 = 2π√(L / 1.6)

To solve for L, we can rearrange the formula:

L = (2.3 / (2π))^2 * 1.6

L ≈ 0.781 meters (or 78.1 centimeters)

So, the pendulum must be approximately 0.781 meters (or 78.1 centimeters) long to have a period of 2.3 seconds on the Moon.

50. Ranking Task:

To rank the pendulums according to their periods, we need to consider both the length and mass of each pendulum.

Ranking from least to greatest period:

1. A: 10 cm long, mass = 0.25 kg

2. C: 20 cm long, mass = 0.25 kg

3. B: 10 cm long, mass = 0.35 kg

There is a tie between pendulums A and C, as they have the same length but different masses.

The power that would be generated is equal to 3500 MW.

Power can be described as the rate of doing work, Power is the work done in unit time. The SI unit of power is J/s or Watt (W). Power can be defined as a time-based quantity. The mathematical formula for power can be expressed as mentioned below.

Power = work/time

P = W/t

Given, the height, h = 50 m

The value of g = 10 N/Kg

The mass of water, m = 7 ×10⁶ Kg

The power that will be generated can be determined as:

\(P =\frac{m\times g\times h}{t}\)

\(P =\frac{7\times 10^{6}\times 10 \times 15}{1}\)

Power, P = 3500 × 10⁶ W

P = 3500 MW

Therefore, the power of 3500 megawatts would be available.

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Answer:

F = M v^2 / R = M w^2 R      where w represents the angular frequency

Only 1 / R causes a reduction in centripetal force when increased

(B)   is the answer

Option B. The radius of curvature causes a reduction in centripetal force with an increase in the magnitude.

Centripetal force is a force that acts on the object that moves in a circular motion and is directed towards the center of the circular moving path. The mathematical representation of centripetal force is -

Where Fc = the centripetal force,

m = mass of the object,

v = velocity

and r = radius.

From the given explanation above, The centripetal force and radius of curvature are inversely proportional to each other,

that is, Fc = 1/r.

Therefore, an increase in the radius of curvature leads to a reduction in the centripetal force.

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The mass of the object is approximately 0.457 kg.

The mass of the object attached to the trolley can be calculated using the principle of conservation of momentum. Since the two trolleys couple together and move as a single system after the collision, the total momentum before and after the collision should be the same. Given the mass of one trolley is 0.80 kg and the initial speed is 1.1 m/s, the momentum before the collision is 0.80 kg * 1.1 m/s = 0.88 kg·m/s. After the collision, the total mass is the sum of the two trolleys, and the final speed is 0.70 m/s.

Using the momentum equation, the mass of the object can be calculated as follows:

Total momentum before collision = Total momentum after collision

0.88 kg·m/s = (0.80 kg + mass of the object) * 0.70 m/s

Solving for the mass of the object, we get:

0.88 kg·m/s = (0.80 kg + mass of the object) * 0.70 m/s

0.88 kg·m/s = 0.56 kg + 0.70 kg * mass of the object

0.88 kg·m/s - 0.56 kg = 0.70 kg * mass of the object

0.32 kg = 0.70 kg * mass of the object

Dividing both sides by 0.70 kg, we find:

mass of the object = 0.32 kg / 0.70 kg = 0.457 kg

The two trolleys collide and couple together, the total momentum before the collision is equal to the total momentum after the collision according to the principle of conservation of momentum.

The momentum of an object is defined as the product of its mass and velocity. In this case, the mass of one trolley is known (0.80 kg) and the initial speed is given (1.1 m/s), allowing us to calculate the momentum before the collision.

After the collision, the two trolleys move together at a new speed (0.70 m/s). By setting the initial momentum equal to the final momentum and solving for the unknown mass of the object, we can find its value.

In the calculation, we subtract the masses of the two trolleys from the total mass in order to isolate the mass of the object.

Dividing the difference in momentum by the product of the known mass and the new speed, we obtain the mass of the object. In this case, the mass of the object is approximately 0.457 kg.

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The average acceleration of the car over 3 seconds is -7 m/s².

Acceleration is defined as the rate of change of velocity with respect to time. Mathematically -

a = Δv/Δt

Given is a car that car slows from 36 m/s to 15 m/s over 3 seconds.

We can calculate acceleration as follows -

a = Δv/Δt

a = (15 - 36)/(3)

a = -21/3

a = - 7m/s²

Therefore, the average acceleration of the car over 3 seconds is -7 m/s².

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The mass of the the object, given that the same force acted upon it to accelerate at 2 m/s² is 34 Kg

First, we shall determine the force. This can be obtained as follow:

Force (F) = mass (m) × acceleration (a)

Force = 4 × 17

Force = 68 N

Finally, we shall determine the mass of the object that will accelerate at 2 m/s² when the force of 68 N is applied to it. Details below:

Force = mass × acceleration

68 = mass × 2

Divide both sides by 2

Mass = 68 / 2

Mass = 34 Kg

Thus, from the above calculation, we can conclude that the mass is 34 Kg

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(a) The magnitude of the gravitational force on the rock is 64.68 N and on the pebble is 5.488 x 10⁻³ N.

(b) The acceleration of each object is equal to acceleration due to gravity, = 9.8 m/s².

The gravitational force exerted on each object is calculated by applying Newton's law of universal gravitation as follows;

Fg = Gm₁m₂ / R²

where;

The acceleration of each object will be constant and equal to acceleration due to gravity, the force on each object is calculated by using Newton's second law of motion.

Force on the rock;

F = mg

where;

F = 6.6 kg x 9.8 m/s²

F = 64.68 N

The force on the pebble;

F = mg

F = 5.6 x 10⁻⁴  x 9.8

F = 5.488 x 10⁻³ N

Thus, the acceleration of each object is equal to acceleration due to gravity, = 9.8 m/s².

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Speed = (distance) / (time)

Speed = (

Velocity = speed, and its direction

The velocity of the plane is 10.2 miles per second East.

(about 48 times the speed of sound)

The average acceleration of the motorcycle over the given distance is approximately 9.39 m/s².

To calculate the average acceleration of the motorcycle, we can use the formula:

Average acceleration = (final velocity - initial velocity) / time

First, let's convert the final velocity from km/h to m/s since the distance is given in meters. We know that 1 km/h is equal to 0.2778 m/s.

Converting the final velocity:

Final velocity = 78 km/h * 0.2778 m/s = 21.67 m/s

Since the motorcycle starts from rest (initial velocity is zero), the formula becomes:

Average acceleration = (21.67 m/s - 0 m/s) / time

To find the time taken to reach this velocity, we need to use the formula for average speed:

Average speed = total distance/time

Rearranging the formula:

time = total distance / average speed

Plugging in the values:

time = 50 m / 21.67 m/s ≈ 2.31 seconds

Now we can calculate the average acceleration:

Average acceleration = (21.67 m/s - 0 m/s) / 2.31 s ≈ 9.39 m/s²

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Explanation:

the average speed = (4+2+4+2)m /24 s

= 20/24

= 0.83 m/s

the displacement = 0 (back to the origin position)

»average speed is

= (4m + 2m + 4m + 2m)/24s

= 12m/24s

= 0.5m/s✅

~Physics#4

Explanation:

As pressure increases, with temperature constant, density increases. Conversely when temperature increases, with pressure constant, density decreases. Air density will decrease by about 1% for a decrease of 10 hPa in pressure or 3 °C increase in temperature.

Answer:

3000m

Explanation:

The second submarine is located 3000 meters away from the first submarine.

Wavelength is a property of waves that describes the distance between two consecutive points on the wave that are in phase with each other. In other words, it is the distance between two points on a wave that are at the same stage of their cycle, such as two consecutive crests or two consecutive troughs.

Wavelength is usually denoted by the Greek letter lambda (λ), and its unit of measurement depends on the type of wave being considered. For example, in the case of electromagnetic waves such as light, wavelength is typically measured in meters (m), while in the case of sound waves, wavelength is typically measured in units of length such as meters (m) or centimeters (cm).

Here in the question,

The speed of sound in water is approximately 1500 meters per second. We can use the speed of sound, the frequency of the signal, and the wavelength of the signal to calculate the distance between the two submarines.

First, we need to calculate the period of the signal, which is the time it takes for one complete cycle. The period can be calculated as the reciprocal of the frequency:

Period = 1 / Frequency = 1 / 512 cycles per second = 0.001953125 s

Next, we can use the time it takes for the signal to travel to the other submarine and back to calculate the round-trip time:

Round-trip time = 4.00 s

Finally, we can use the round-trip time and the speed of sound to calculate the distance between the two submarines:

Distance = (Round-trip time x Speed of sound) / 2

Distance = (4.00 s x 1500 m/s) / 2 = 3000 m

Therefore, the second submarine is located 3000 meters away from the first submarine.

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Answer:

B

Explanation:

If N increases then the Acceleration will also increase

Option C - The data points will fall along a line. This shows that as the force increases, the acceleration increases is correct.

We have a group of students conduct an experiment to study Newton's second law of motion.

We have to identify which of the given options are correct.

The product of mass and acceleration of a body is called force.

According to the question, we have a table representing the force applied and the respective acceleration produced. The table is as follows-

Force           Acceleration

2N                    5 m/\(s^{2}\)

3N                   7.5 m/\(s^{2}\)

6N                   15 m/\(s^{2}\)

Let us plot the graph for the above points -

Refer to image attached. The graph is a straight line.

Clearly, it can be seen that the slope of the line is Positive. This, means that the acceleration is increasing.

Hence, Option C is correct.

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The domain theory of magnetism explains that ferromagnetic materials such as iron are composed of tiny magnetic domains that are randomly oriented in the absence of a magnetic field.

These domains have their own magnetic fields that cancel each other out. When an external magnetic field is applied to the material, the domains align themselves with the field, resulting in a net magnetic field and the material becoming magnetized.

In the case of the bar of iron being magnetized by striking it repeatedly with a hammer while pointing it parallel to the earth's magnetic field, the mechanical energy from the hammer blows causes the domains to align themselves in the same direction as the earth's magnetic field. This alignment becomes "locked in" as the domains resist changing their orientation once aligned. Therefore, the bar of iron becomes magnetized and will remain so until it is demagnetized or its magnetic domains are realigned in a different direction by another magnetic field.

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Answer:

Explanation:

Isaac Newton argued that the geometric nature of reflection and refraction of light could only be explained if light were made of particles, referred to as corpuscles, because waves do not tend to travel in straight lines.

Based on the description provided, the diagram that correctly illustrates the movement of the ball from the child's perspective is C.

Considering the child is rotating and he or she catches the ball some seconds after throwing it, it can be concluded the trajectory is closed, which means the diagram should show the ball returning to the initial point.

Based on the above, diagrams A and B are not possible because the ball is not retruning to the child.

Considering the child is moving at a constant speed and in a defined circular area, it is expected the movement resembles a circle; however as the ball will be affected by a leftward force in case the child is moving clockwise the movement will not be exactly a circle. Based on the above, the best option is diagram C.

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The average speed of the car is calculated as 0.43miles/min.

HOW TO CALCULATE AVERAGE SPEED:

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Answer:

Researchers use a wide range of technologies today to help gather data, depending on the field of study and the type of data they need to collect. Here are some examples:

   Sensors: Sensors are devices that can detect and measure physical quantities such as temperature, pressure, and motion. Researchers use sensors to collect data on the environment, human behavior, and other phenomena.

   Drones: Drones or unmanned aerial vehicles (UAVs) are aircraft that are remotely controlled or can fly autonomously. Researchers use drones to collect data from hard-to-reach or dangerous areas, such as remote forests, volcanoes, or disaster zones.

   Satellites: Satellites are spacecraft that orbit the Earth and can collect data on a wide range of environmental and climatic factors, such as temperature, rainfall, and ocean currents. Researchers use satellite data to study climate change, natural disasters, and other global phenomena.

   Imaging technologies: Imaging technologies such as magnetic resonance imaging (MRI) and computed tomography (CT) scans are used to collect detailed images of the body's internal structures. Researchers use these images to study the human brain, diagnose diseases, and develop new medical treatments.

   Social media and online platforms: Social media and online platforms provide researchers with access to large amounts of data on human behavior, opinions, and attitudes. Researchers use this data to study social trends, political movements, and public opinion.

   Wearable technology: Wearable technology such as fitness trackers and smartwatches collect data on physical activity, heart rate, and other health metrics. Researchers use this data to study human health and behavior.

These are just a few examples of the many technologies researchers use today to help gather data. The use of advanced technology has revolutionized the way researchers collect and analyze data, allowing them to make new discoveries and gain a deeper understanding of the world around us.

Answer:

η = 0.84 = 84%

Explanation:

The efficiency of the man can be given by the following formula:

η = output/input

where,

η = efficiency of man = ?

output = potential energy gain of the block = mgh

input = work done by man = Fd

Therefore,

\(\eta = \frac{mgh}{Fd}\)

where,

m = mass of block = 225 kg

g = acceleration due to gravity = 9.81 m/s²

h = height gained by block = 1.2 m

F = force exerted by man = 315 N

d = distance covered by man = 10 m

Therefore,

\(\eta = \frac{(225\ kg)(9.81\ m/s^2)(1.2\ m)}{(315\ N)(10\ m)}\)

η = 0.84 = 84%

The volume of the life jacket with a weight of 735N and density is 985 kg/m³ and the specific gravity of the life jacket is 0.25 is 211.8 × 10⁻³  m³.

The density is defined as the mass per unit volume. According to Archimedes' principle, the fluid is displaced when the weight is immersed in the fluid.

From the given,

Weight of crew (W) = 735N
The density of crew (ρ) = 985kg/m³

specific gravity = 0.25 = 250kg/m³

the volume of the life jacket =?

W = m.g = 735N

735 / 10 = m

73.5 kg = m

The density of the crew is 985N is less than the density of water. Hence, the crew is immersed in the water and the crew needs the life jacket to survive. The volume of his head is 9/10 of his volume. The density of the crew,

985×10/9 = 1088 kg/m³.

Density = mass/volume

volume = mass/ density

           = 73.5 / 1088

           = 0.067 m³

The crew needs the lifeboat to be survived.

The volume of the life jacket:

(Crew mass + life mass) / (9×crew volume / 10 × life vests volume)=1000

(73.5 + life vests mass)×(10×life vests volume)/ (9×0.067) = 1000

(73.5 + life vests mass)×(10×life vests volume)/0.603 = 1000

(73.5 + life vests mass)×(10×life vests volume) = 1000×0.603

(73.5 + life vests mass)×(10×life vests volume) = 603

(life vests mass)×(10×life vests volume) = 603 - 73.5

                                                                = 529.5

Life. vest mass/life.vest volume = 250

life.vest mass = 250×life.vest volume

250×life.vest volume×10×life.vest volume = 529.5

2500×life.vests volume = 529.5

life.vests volume = 529.5/2500

                            = 0.2118×1000/1000

                           = 211.8 × 10⁻³ m³.

Thus, the life vests volume is 211.8× 10⁻³ m³.

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8.27 x 1013 meres is the orbital radius.

Jupiter's mass, 1.9 x 1027 kg, and the time interval, 16.9 days, are equal to 1.46 x 106 seconds. The radius is needed, thus r. Solution

The moon must be held in its orbit by a gravitational force equal to the centripetal force between Jupiter and the moon.

6.67 x 10⁻¹¹ N/m²kg

2 x 1.9 x 10/27 x 1.46 x 10'6 / 4 r = 6.85 x 102'7 G = 6.67 x 10'11 N/m2kg2 r = 8.27 x 10'7

The second-largest moon in Jupiter's orbit and the third-largest moon in the solar system is called Callisto. Of all the objects in our solar system, its surface has the most craters.

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Answer:

5.8399

Explanation

work:

176cm

1cm=0.39 in

1cm=0.39x178=178cm=70.07in

70.0787/12=5.8399

Answer:

1.78 meters

Explanation:

It's what you get when you convert it to meters in search

For work to be considered done by a physicist, it must involve the application of physics principles and concepts to solve a problem or answer a research question. This can involve theoretical work, such as mathematical modeling, or experimental work, such as designing and conducting experiments to test hypotheses.

An example of work done by a physicist would be the design and analysis of experiments to study the properties of a new material. This could involve developing a theoretical model to predict the behavior of the material, designing and building experimental apparatus, conducting experiments, and analyzing the resulting data using statistical and mathematical techniques. The physicist would use their knowledge of physics principles and concepts to interpret the data and draw conclusions about the properties of the material.

Answer:

Option D

Explanation:

11,890

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