what is the mass of 5l of fresh water (density = 1.00 g/cm3)?

If no external forces act on a moving object, it will continue moving at the same speed. This is known as Newton's First Law of Motion, also called the law of inertia.                                                                                                                                            

In the absence of any external forces, an object in motion will continue moving with a constant velocity. This means that the object will not slow down or speed up unless acted upon by an external force.
If no external forces act on a moving object, it will follow Newton's first law of motion, also known as the law of inertia. According to this law, an object in motion will continue moving at the same speed and in the same direction unless acted upon by an external force. Therefore, the correct answer to your question is option (a): the object will continue moving at the same speed. This law explains the natural tendency of objects to maintain their current state of motion, whether at rest or in motion.

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Answer:

the answer is D metal resting

Explanation:

I just think that because if you treasure can that's physical charge by dropping where you create a physical charge melting and Ice Cube might be 1 but I feel like metal resting is more likely

The bird's average speed when he flies 10 m/s for 3 s, 15 m/s for 3s and 20 m/s for 4 s is 15.5 m/s. The right option is C 15.5 m/s

Average speed can be defined as the ratio of the total distance to the total time traveled by an object.

To calculate the average speed of the bird, we use the formula below.

Formula:

From the question,

Givne:

Substitute these values into equation 1

Hence, the average velocity of the bird is 15.5 m/s.

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Answer:

It has more potential energy than before.

Explanation:

Because of its position (not moving) the energy present would now be potential. It would only be kinetic if the picture happened to suddenly fall.

The gravitational force between the two objects is 8.37×10^-11 N

Newton Law of universal gravitation states that the force of attraction or repulsion between two object is directly proportional to the product of their masses and inversely proportional to the square of the distance between them. From the law

This means that F = G×(mass1 × mass2)/(radius)²

Where G is the gravitational constant ,which is given as 6.67×10^-11 Nm²/kg² and r is the distance between them

the force between two objects with masses 112kg is F= 6.67×10^-11×112²/100²

F= 8.37×10^-11/10000

F= 8.37×10^-11 N

therefore the force of gravity between the two objects is 8.37×10^-11 N

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Answer: G

Explanation:

Answer:

The final answer is \(6.1 BTU = 6.5621*103 KJ\)

Explanation:

\(1 BTU= 252 cal\\1 BTU =252 × 4.2 kJ\\6.1 BTU = 252 × 6.1×4.2 kJ = 6562.08 kJ\\ = 6.5621 × 103 kJ\\\)

Hence, \(6.1 BTU = 6.5621 × 103 kJ\)

The advantages and disadvantages may vary depending on the specific application, material, and the expertise of the personnel conducting the magnetic particle testing.

Advantages of using the magnetic particle method of defect detection:

Sensitivity to Surface and Near-Surface Defects: Magnetic particle testing is highly sensitive to surface and near-surface defects in ferromagnetic materials. It can detect cracks, fractures, and other discontinuities that may not be easily visible to the  eye.

Rapid and Cost-Effective: Magnetic particle testing is a relatively fast and cost-effective method compared to other non-destructive testing techniques.

Real-Time Results: The method provides immediate results, allowing for real-time defect detection. This enables quick decision-making regarding the acceptability of the tested components or structures, leading to faster production cycles and reduced downtime.

Disadvantages of using the magnetic particle method of defect detection:

Limited to Ferromagnetic Materials: Magnetic particle testing is applicable only to ferromagnetic materials, such as iron, nickel, and their alloys. Non-ferromagnetic materials, such as aluminum or copper, cannot be effectively inspected using this method.

Surface Preparation Requirements: Proper surface preparation is crucial for effective magnetic particle testing. The surface must be cleaned thoroughly to remove dirt, grease, and other contaminants that can interfere with the test results. This additional step may require additional time and effort.

Limited Detection Depth: Magnetic particle testing is primarily suited for detecting surface and near-surface defects. It may not be as effective in detecting deeper or internal defects. Other non-destructive testing methods, such as ultrasonic testing or radiographic testing, may be more appropriate for inspecting components with deeper or internal flaws.

It's important to note that the advantages and disadvantages may vary depending on the specific application, material, and the expertise of the personnel conducting the magnetic particle testing.

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Answer:

friction, conduction and induction

Explanation:

Had it in class I had it correct hope this helps.

The first scientist to measure the conductivity speed of neurons was German physiologist Hermann von Helmholtz in the mid-19th century.

He used a frog sciatic nerve and a galvanometer to measure the speed of electrical signals traveling through the nerve fibers. His experiments led to the discovery of the action potential and provided evidence for the nerve impulse theory.

Later, other scientists built upon his work, including English physiologist Sir Charles Sherrington, who coined the term "synapse" and furthered the understanding of neural communication.

Today, measuring the conductivity speed of neurons is a fundamental technique in neuroscience research and is used to study a wide range of topics, including sensory processing, motor control, and memory formation.

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The electric field amplitude of B's radio signal once it reaches A's walkie-talkie is 0.019 V/m.

Radio waves are a kind of electromagnetic radiation. Radio waves have frequencies ranging from 30 Hz to 300 GHz. Radio waves are typically used for communication and are generated by transmitters that use antennas to broadcast radio waves into the air.Electric field amplitude of B's radio signal at A's walkie-talkieAn electromagnetic wave's electric field amplitude represents the intensity of the electric field that travels through space. Electric field amplitude is the distance between the peak and the trough of the electric field. It is measured in units of volts per meter (V/m).The electric field amplitude of B's radio signal once it reaches A's walkie-talkie is 0.019 V/m.The radio wave frequency of B's walkie-talkie is 200 MHz.The power of B's radio wmave is 3.3 W.

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Answer:

The biggest difference is that gravity is an attractive force while electromagnetism is both an attractive and repelling force. Gravity happens between two objects depending on their masses, while electromagnetism is dependent on the objects' electric charges and the distance between them.

Explanation:

Answer:

6.0 m/s vertical and 9.0 m/s horizontal

Explanation:

For the vertical component, we use the formula:

Then we solve for y:

And for the horizontal component, we use the formula:

Then we solve for x:

So the answer is " 6.0 m/s vertical and 9.0 m/s horizontal".

The magnitude of the force on the wire is 1.9 × 10⁻⁴ N. The direction of the current is 50° south of the west. 1.9×10 N⁻⁴, out of the Earth's surface is the correct option.

Length of the horizontal wire, L = 3.0 m

Current flowing through the wire, I = 6.0 A

Earth's magnetic field, B = 0.14 × 10⁻⁴ T

Angle made by the current direction with due west = 50° south of westForce on a current-carrying wire due to the Earth's magnetic field is given by the formula:

F = BILsinθ, where

L is the length of the wire, I is the current flowing through it, B is the magnetic field strength at that location and θ is the angle between the current direction and the magnetic field direction

Magnitude of the force on the wire is

F = BILsinθF = (0.14 × 10⁻⁴ T) × (6.0 A) × (3.0 m) × sin 50°F = 1.9 × 10⁻⁴ N

Earth's magnetic field is due north, the direction of the force on the wire is out of the Earth's surface. Therefore, the correct option is 1.9×10 N⁻⁴, out of the Earth's surface.

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The mass and weight of object on moon is 0.0138kg  and 0.0229kg .

Since force is a vector quantity, we must consider the direction in which it acts. There are two main types of frictional force: static force (Fst) and sliding force (Fsl). Normal forces (FN) produce these forces acting perpendicular to the direction of motion, although they act in the opposite direction to the object's motion.

It is equivalent to the weight of the object plus the extra weight. For example, pushing down on a block of wood on a table increases the normal force and thus the frictional force.

me=12Kg

ge=10

gm=10/6= 1.66

M=?

me ge =M gm

M=me ge/gm

M=120/1.66

M=0.0138kg

W=mg =0.0138 x 10kg

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The expression for the bridge output voltage (eor) when the strain gauges are connected in a full-20 bridge is given by eor = 4Gε (ε1 + ε2 - ε3 - ε4) Vdd, where Gε is the gauge factor for the bridge and is a constant.

The gain of the bridge is 4 times the gauge factor.

A force sensor was designed using a cantilever load cell and four active strain WASON.

To show that the bridge output voltage (eor) when the strain gauges are connected in a full-20 bridge, the following steps are to be followed:

Step 1: The equation for the strain gauge is given as

                                        ∆R = RGαε

Where,∆R = Change in resistance

            RG = Gauge factor

             α = Change in temperature

            ε = Change in strain

Step 2: The gauge factor, G for the strain gauge is given as

                                             G = (ΔR/R)/ε

                                                 = ∆R/(ε.R)

Step 3: Since four strain gauges are used, the resistance of the bridge, R is given as

                                                 R = 4Rg

Where, Rg is the resistance of each strain gauge.

Step 4: Let us assume that the current flows through the bridge from G1 to G2 and G3 to G4.

Thus, the output voltage across the bridge can be given as,

                                               eor = G (ε1 + ε2 - ε3 - ε4) Vdd

Where, G is the bridge gain, ε1, ε2, ε3, and ε4 are the strains at gauge 1, gauge 2, gauge 3, and gauge 4, respectively. Vdd is the input voltage to the bridge.

Step 5: From the given problem, it is given that the bridge is connected in a full-bridge.

Thus, all the four strain gauges are active and of equal resistance.

Step 6: Hence, we can write Rg = R/4, which gives us,

                                  R = 4Rg

                                      = 4R/4

                                      = R

where, R is the resistance of the bridge.

Step 7: Substituting the value of R in the gain equation, we get,

                                 G = 4(∆R/R)/ε

                                    = 4Gε

Where, Gε is the gauge factor for the bridge. It is a constant.

Step 8: Now, substituting the value of G in the output voltage equation, we get,

                                    eor = 4Gε (ε1 + ε2 - ε3 - ε4) Vdd

Step 9: Thus, this is the expression for the bridge output voltage (eor) when the strain gauges are connected in a full-20 bridge.

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Answer:

I think this is correct

Explanation:

frequency definition is the number of complete waves produced per second so if you have 100Hz, it is 100 complete waves produced in 1 seconds, and when it says vibrates 300 times in 3 seconds, you find for 1 second

vibrations is most probably the frequency in one second

1 second -----100 vibrations

thus the frequency = 100 Hz

hope this helps!!!!!!

The melting point of a substance is the temperature at which the substance changes its phase from solid to liquid.

The freezing point is the temperature at which the substance changes its phase from liquid to solid.

The melting point of a substance is the same as the freezing point. That is when the temperature of the substance in the liquid form is increased continuously, the temperature at which the substance turns into a solid is equal to the temperature at which the substance will turn into liquid from solid if the temperature is decreased continuously, from a higher temperature.

1.3 m/s is the average speed of runner. Option D is the correct answer.

The total distance covered by the runner in one lap is equal to the distance around the two semicircles plus the distance along the two parallel lines. The distance around one semicircle is πr = π(49 m) and since there are two semicircles, the total distance around the semicircles is 2π(49 m). The distance along each parallel line is 96 m, and since there are two parallel lines, the total distance along the parallel lines is 2(96 m). Therefore, the total distance covered by the runner in one lap is:

Total distance = 2π(49 m) + 2(96 m) = 2π(49 m + 48 m) = 2π(97 m)

The time taken by the runner to complete one lap is given as 100 seconds. Therefore, her average speed is:

Average speed = Total distance / Time taken = [2π(97 m)] / (100 s) = 1.93 m/s

Rounding to two significant figures, the average speed of the runner is 1.9 m/s, which corresponds to option (D) 1.3 m/s.

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Answer:

10 joules

Explanation:

formula for kinetic energy= 1/2mv²

mass (m) given = 5kg

velocity (v) given = 2m/s

therefore, by inputting them into the formula

= 1/2(5)(2)²

= 1/2 x 5 x 2²

= 1/2 x 5 x 4

= 1/2 x 20

= 10J

You are given a set of black coordinate axes  with '(velocity) v (m/s)' on the vertical axis  and 't (s)' on the horizontal axis.

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You will get a set of black coordinate axes with "(velocity) v (m/s)" on the vertical axis and "t (s)" on the horizontal axis.

What is speed?

Speed ​​is the direction in which a body or object is moving. Speed ​​is primarily a scalar quantity. Speed is essentially a vector quantity. The rate of change of distance and the rate of change of displacement are called velocity. Speed corresponds to the specification of speed and direction of movement (e.g. 60 km/h to the north). Velocity is commonly defined as a vector value of velocity and direction of motion. Simply put, speed is how fast something is moving in one direction.

The speed of a car driving north on a freeway and the speed of a rocket launched into space can be measured by velocity.

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The correct matches are: 1. ecology - the relationship of organisms to their environment,2.  fossil fuel - ancient plants and animals, 3. chlorophyll - energy-converting pigment, 4. animals - consumers, 5. transpiration - water loss, 6. groundwater - stored in porous rock,7. habitat - the location where an organism lives, 8. respiration - use of energy in food, 9. plants - producer, and 10. rhizobium - nitrogen-fixing bacteria.

Fossil fuels are energy sources that are formed from the remains of dead plants and animals that were buried and exposed to extreme heat and pressure over millions of years. These fuels include coal, oil, and natural gas and are non-renewable resources because they take so long to form. Fossil fuels are used extensively in many industries, including transportation, electricity generation, and manufacturing, but their use is also associated with environmental problems, such as air pollution and climate change.

Rhizobium is a type of nitrogen-fixing bacteria that is found in the root nodules of leguminous plants such as peas, beans, and clover. These bacteria form a symbiotic relationship with the plant, in which the bacteria convert atmospheric nitrogen into a form that the plant can use for growth and development.

The bacteria infect the root hairs of the plant and form nodules where they reside. Inside the nodules, the bacteria receive carbohydrates from the plant in exchange for fixing nitrogen gas from the air into ammonia. The plant then uses ammonia to make amino acids and other nitrogen-containing compounds that are essential for growth. This process is known as nitrogen fixation, and it helps to replenish the soil with nitrogen, which is necessary for the growth of plants. Without the help of nitrogen-fixing bacteria like Rhizobium, many plants would not be able to survive in nitrogen-poor soils.

Therefore, The correct answers are 1. ecology - the relationship of organisms to their environment,2.  fossil fuel - ancient plants and animals, 3. chlorophyll - energy-converting pigment, 4. animals - consumers, 5. transpiration - water loss, 6. groundwater - stored in porous rock,7. habitat - the location where an organism lives, 8. respiration - use of energy in food, 9. plants - producer, and 10. rhizobium - nitrogen-fixing bacteria.

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Answer: 24 m/s

Explanation:

Answer:

411.6 Joules.

Explanation:

The potential energy (PE) of an object at a certain height is given by the formula:

PE = m * g * h

where:

m = mass of the object (in kg)

g = acceleration due to gravity (approximately 9.8 m/s^2 on Earth)

h = height of the object above a reference level (in meters)

In this case, the mass of the object is 7 kg, the height is 6 m, and the acceleration due to gravity is 9.8 m/s^2. Therefore, we can calculate the potential energy as follows:

PE = 7 kg * 9.8 m/s^2 * 6 m

PE = 411.6 Joules

Therefore, the potential energy of the object is 411.6 Joules.

Answer:

a. Hooke's law is a principle in physics that states that the force required to extend or compress a spring or elastic material is directly proportional to the displacement of its end or deformation.

b. The formula for resistance of a wire is given by:

R = (ρL)/A

where R is resistance, ρ is resistivity, L is length, and A is cross-sectional area.

Given L = 10m, A = 0.1 mm² = 0.1 x 10^-6 m², and ρ = 50 µcm = 50 x 10^-8 Ωm, we have:

R = (50 x 10^-8 x 10) / (0.1 x 10^-6)

R = 5 Ω

Therefore, the resistance of the wire is 5 Ω.

The formula for Young's modulus is given by:

Y = F L / A ΔL

where Y is Young's modulus, F is force, L is length, A is cross-sectional area, and ΔL is the change in length.

Given F = 2 kgf = 2 x 9.81 N, L = 2 m, d = 0.64 mm = 0.64 x 10^-3 m, and ΔL = 0.60 mm = 0.60 x 10^-3 m, we have:

A = πd²/4 = π(0.64 x 10^-3)²/4 = 3.21 x 10^-7 m²

Y = (2 x 9.81 x 2) / (3.21 x 10^-7 x 0.60 x 10^-3)

Y ≈ 1.24 x 10^11 N/m²

Therefore, the Young's modulus of the wire is approximately 1.24 x 10^11 N/m².

Explanation:

Answer:

Magnetization is the density of magnetic dipole moments that are induced in a magnetic material when it is placed near a magnet. ... Magnetization is also known as magnet polarization.

Answer:

Heat of the reservoir is 461.38 K or 188.1 °C

The heating load is 18.705 kW

Explanation:

COP = 8.7

working temperature \(T_{h}\) = 248 °C = 248 + 273.3 = 521.3 K

work power W = 2.15 kW

reservoir temperature \(T_{c}\) = ?

heating load Q = ?

We know that

COP = Q/W

Q = COP x W = 8.7 x 2.15 = 18.705 kW

Also,

COP = \(\frac{T_{h} }{T_{h}- T_{c} }\) = \(\frac{521.3}{521.3- T_{c} }\)

8.7 = \(\frac{521.3}{521.3- T_{c} }\)

4535.31 - 8.7\(T_{c}\)  = 521.3

4535.31 - 521.3 = 8.7\(T_{c}\)  

4014.01 = 8.7\(T_{c}\)  

\(T_{c}\)  = 4014.01/8.7 = 461.38 K

or 461.38 -273.3 = 188.1 °C

Answer:

A hypothesis is a possible explanation for a set of observations or an answer to a scientific question. A hypothesis must be testable and measurable.

Explanation:

Answer:

hypothesis is likely tobe the answer, im indian