express force f in cartesian vector form if point b is located 3 m along the rod from end c.

C. 0.5 m/s. From the graph, the change in position within 2 seconds from gate C to gate D is 1 m. Then, the velocity of the motorcycle is 0.5 m/s. Hence, option C is correct.

Position - time graph of an item describes the change in position with regard to time. The time is given in the x-axis, while the position is given in the y-axis. The position-time graph can be used to determine the object's velocity. The ratio of a moving object's distance travelled to its travel time is its velocity. The velocity unit is m/s. Being a vector quantity with magnitude and direction, velocity has both.

From the graph, the time taken by the motor cycle is 2 seconds. The distance travelled from C to D is 1 m (7 m to 8 m).

velocity = distance/ time

v = 1 m/ 2 s

= 0.5 m/s.

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Resistance decreases the flow of current in a circuit.

Explanation:

The resistance of an electrical circuit is defined as the opposition to the flow of current in that particular circuit

The sonar systems calculate the time each pulse takes to reach the seafloor and return, then translates those times into water depths, allowing us to uncover the bathymetry below us.

Multibeam sonar signals are sent out from the ship. With about 1500 sonar soundings sent out per second, multibeam “paints” the seafloor in a fanlike pattern. This creates a detailed “sound map” that shows ocean depth, bottom type, and topographic features.

Sonar, short for Sound Navigation and Ranging, is helpful for exploring and mapping the ocean because sound waves travel farther in the water than do radar and light waves.

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Answer:

Heat flows from higher to lower temperature. So when you keep hot things in normal temperature, the heat from hot object transfers to the environment until they are both on the same level. Same happens when a cold object is kept in normal room temperature, the heat from the environment transfers to the cold object until they are both equal. its all about achieving the equilibrium in a system

Answer:

For which country do we locate the most earthquakes? Japan. The whole country is in a very active seismic area, and they have the densest seismic network in the world, so they are able to record many earthquakes.

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The lever can be used to lift the heavy object by increasing the input force and decreasing the output displacement. Hence, option a is correct.

Force is an external agent acting on a body to change it from the state of rest or motion. There are various kinds of forces namely, magnetic force, frictional force, nuclear force etc.

If the force which creates a displacement to an object , then the source of force is said to be work done on the object. However, not all force result in work done.

Here, the lever have to be lift a heavy object where a greater input force has to be applied against the weight the object and output displacement must be decreased since the action must result in the work done where the object is lifting upward by a force. Thus option A is correct.

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Your question is incomplete. But your complete question probably was:

A lever is being used to try to lift a heavy object, but it is not working. Which of these actions would increase the output force the most?.

a Increase the input force and decrease the output displacement.

b .Increase the input force and increase the output displacement.

c. Decrease the input force and decrease the output displacement.

d. Decrease the input force and increase the output displacement.

Answer: An atom that gains or loses an electron becomes an ion. If it gains a negative electron, it becomes a negative ion. If it loses an electron it becomes a positive ion

Answer:

when an atom gains electrons, it gains a negative charge

Explanation:

hope I helped you

Answer:

Point number 3.

Explanation:

Volcanism can be studied to found out evidence of the internal structure of the Earth.

Answer:

Volcanism

Explanation:

8000 Joules is the amount of work required to haul up the equipment.

To calculate the work required to haul up the equipment, we need to consider two components: the work done against gravity and the work done against the weight of the rope.

The force due to gravity is given by the weight of the equipment, which is 100 N. The distance over which the force is applied is the height the equipment is being hauled, which is 40 meters. The work done against gravity can be calculated using the formula:

Work = Force × Distance

Work against gravity = 100 N × 40 m = 4000 N·m or 4000 J (Joules)

The weight of the rope can be calculated by multiplying the weight per meter (0.8 N/m) by the length of the rope (40 m):

Weight of the rope = 0.8 N/m × 40 m = 32 N

Since the rope is being hauled up, the work done against the weight of the rope is the same as the work done against gravity. Therefore, the work against the weight of the rope is also 4000 J.

The total work required to haul up the equipment is the sum of the work against gravity and the work against the weight of the rope:

Total work = Work against gravity + Work against rope weight

Total work = 4000 J + 4000 J

Total work = 8000 J

Therefore, it will take 8000 Joules of work to haul up the equipme

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The resultant magnitude and direction of the vectors are as follows:

The resultant magnitude and direction of the vectors are as follows:

A. A = √(5.7² + 3.4²)

A = 6.6

θ = tan⁻¹(3.4/5.7)

θ = 30.8° from the x-axis

B. B = √{(-10)² + (-3²)}

B 10.4

θ = tan⁻¹(3/10) + 180

θ = 16.7° + 180°

θ = 196.7° from the x-axis

C. C = √{(12)² + (-20²)}

C = 23.3

θ = 360° - tan⁻¹(20/12)

θ = 300° from the x-axis

D. D = √{(-30)² + (27²)}

D = 40.4

θ = 180 - tan⁻¹(27/30)

θ = 138° from the x-axis

E. E = √{(48)² + (12²)}

E = 49.5

θ = 360° - tan⁻¹(12/48)

θ = 346° from the x-axis

In conclusion, the resultant of the vectors and direction are obtained using the resultant vector formula.

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Answer:

He should report his findings to a reputable science journal.

Answer:

11.3

Explanation:

The slope of a cold front is steeper than that of a warm front.

A warm front and a cold front are two different fronts associated with a mid-latitude low-pressure system. A cross-sectional view of these fronts can be helpful in better understanding their characteristics and structure. Let's take a look at the horizontal cross-section of these fronts:

Image showing the Horizontal Cross section of a warm front and a cold front for a mid-latitude low pressure system:

The 150 isobar is shown in bold.

The vertical structure of a warm front:

In a mid-latitude low-pressure system, a warm front represents the leading edge of a warm, moist air mass as it approaches a region of cold, dry air. In general, the warm air moves toward the cold air in the form of a low-level wedge. The warm front is associated with a gradual decrease in temperature and pressure as one moves from the warm side to the cold side of the front. The steepness of the frontal slope is gradual. The slope is gradual because the warm air rises over the cool air.

The vertical structure of a cold front:

A cold front represents the leading edge of a cold, dry air mass as it advances toward a region of warm, moist air. It is usually associated with a line of clouds, precipitation, and thunderstorms. The frontal slope is steeper than that of a warm front, with a temperature drop of several degrees Celsius per kilometer of ascent. The cold air moves in a downward motion to the ground and forces the warm air up. This motion creates clouds, precipitation, and sometimes thunderstorms. Therefore, the slope of a cold front is steeper than that of a warm front.

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Answer:

Its. Biased

Explanation:

Answer:

Antacids.

Explanation:

Magnesium hydroxide is commonly used for sicknesses and etc.

Answer:

Solid, Liquid and Gas

Explanation:

They are the 3 states or stages of Matter

Answer:

The answer is c.nutritionist

Explanation:

because they are a g

Of all the health and wellness careers,  the one has least opportunity for future job growth is nutritionist. The correct option is C.

Career is the most important phase of one's life. This helps a person financially independent by doing job or business.

Currently fitness is all over the people's mind. But the career as a nutritionist has less important or less interest.

Thus,  the one has least opportunity for future job growth is nutritionist.

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Answer:i dont think so

Explanation:

Answer: Iit will take approximately 0.916 seconds for the voltage across the capacitor to drop to 2.50 V when the capacitor and resistor are connected in parallel.

Explanation: We can use the equation for the voltage across a capacitor in a discharging RC circuit, which is:

V = V₀ * e^(-t / RC)

where V₀ is the initial voltage across the capacitor, V is the voltage across the capacitor at any time t, R is the resistance of the resistor, C is the capacitance of the capacitor, and e is the mathematical constant e (~2.718).

First, we need to find the initial voltage across the capacitor when it is fully charged in series with the battery:

V₀ = 10 V

Next, we can use the values given for R and C to calculate the time constant of the circuit:

τ = RC = 1000 kΩ * 1 μF = 1 second

Finally, we can use the equation for the voltage across the capacitor to find the time it takes for the voltage to drop to 2.50 V:

2.50 V = 10 V * e^(-t / 1 s)

Taking the natural logarithm of both sides and solving for t:

ln(2.50 V / 10 V) = -t / 1 s

t = -1 s * ln(2.50 V / 10 V) = 0.916 s (rounded to three significant figures)

Therefore, it will take approximately 0.916 seconds for the voltage across the capacitor to drop to 2.50 V when the capacitor and resistor are connected in parallel.

Answer:

The quantity of heat given to body depends on: (i) The mass of the body, (ii) The rise (or fall) in the temperature of the body, and (iii) Nature of the material of the body.

Explanation:

Hope this helps

have a great day

~Zero

At time t = 15/16, the object reaches a state of zero velocity, indicating a momentary pause in its motion. Prior to this time, the object moves in one direction, while after this time, it changes direction and moves in the opposite direction. The value t = 15/16 represents the specific moment when the object transitions from one direction to another and experiences a brief period of rest.

To find the velocity v(t) of the object at any time t, we differentiate the given distance function s(t) = 9 - 15t + 8t² with respect to time:

v(t) = d/dt (9 - 15t + 8t²)

Applying the power rule of differentiation, we obtain:

v(t) = -15 + 16t

Therefore, the velocity v(t) of the object at any time t is given by v(t) = -15 + 16t.

To determine when the object is at rest, we set the velocity v(t) equal to zero and solve for t:

-15 + 16t = 0

Adding 15 to both sides of the equation, we have:

16t = 15

Finally, dividing both sides by 16, we find

t = 15/16

Hence, the object is at rest when t = 15/16.

This means that at time t = 15/16, the object's velocity is zero, indicating that it is momentarily stationary. Before this time, the object is moving in one direction, and after this time, it is moving in the opposite direction. The value t = 15/16 represents the specific point in time when the direction of motion changes, and the object is at rest for an instant.

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Answer: When objects fall to the ground, gravity causes them to accelerate.

Explanation: Gravity causes an object to fall toward the ground at a faster and faster velocity the longer the object falls.

Hi there!

We can begin by calculating the impulse exerted on the soccer ball:

I = Δp = mΔv

Plug in the given values:

I = 0.45 × 20 = 9 Ns

I = Ft, so:

I/t = F

9/0.1 = 90 N

Answer:

It has to do with the polairity of said molelule. If you have vegetable oil, for example, it will not disolve in water because the oil is a non-polar compound, unlike water which is polar. The bond dipoles and differences in electronegetivity in the molecule results in this.

Answer:

The gas law formula that should be used to solve the opportunity is;

Constant temperature, initial P·V = final P·V

Explanation:

From the question we have;

The initial volume of the cylinder, v₁ = 3.0 cc

The initial pressure of the gas in the cylinder, p₁ = 0.8 atm

The initial temperature of the gas in the cylinder, T₁ = Room temperature

The final volume of the cylinder, v₂ = 1.0 cc

The final pressure of the gas in the cylinder = p₂

The final temperature of the gas in the cylinder, T₂ = Room temperature

The gas law formula that should be used to solve the opportunity is Boyle's law which states that at constant pressure the pressure, of a given mass of gas is inversely proportional to the volume of the gas

Mathematically, Boyle's law can be expressed as follows;

P ∝ V

∴ P₁·V₁ = P₂·V₂

Which gives;

Constant temperature, initial P·V = final P·V

Answer:

a) -1.25 m/s²

b) 62.5 m

Explanation:

Convert km/h to m/s:

45 km/h × (1000 m/km) × (1 h / 3600 s) = 12.5 m/s

a = Δv / Δt

a = (0 m/s − 12.5 m/s) / 10 s

a = -1.25 m/s²

Δx = ½ (v + v₀) t

Δx = ½ (0 m/s + 12.5 m/s) (10 s)

Δx = 62.5 m

The correct answer is Option(C). The proper time between two events is measured by clocks at rest in a reference frame in which the two events are separated by the distance a light signal can travel during the time interval.

The concept of proper time is a fundamental concept in special relativity. It refers to the time interval measured by an observer who is at rest relative to the events being measured. According to special relativity, the passage of time can be affected by relative motion and gravitational fields.

The proper time between two events is independent of the reference frame from which it is measured. It is a fundamental property of the events themselves. In order to measure the proper time between two events, one must use clocks that are at rest relative to the events being measured.

Option (C)  states that the two events are separated by the distance a light signal can travel during the time interval. This is the correct choice because the speed of light is a fundamental constant in special relativity and is the maximum speed at which information can propagate. Using the distance traveled by light during a time interval ensures that the measurement of proper time is consistent with the principles of special relativity.

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--The question is incomplete, the complete question is:

"The proper time between two events is measured by clocks at rest in a reference frame in which the two events:  (A). occur at the same time  (B). occur at the same coordinates  (C). are separated by the distance a light signal can travel during the time interval  (D). occur in Boston  E. satisfy none of the above"--

Due to the nature of digital signals, an MP3 download of a song sounds identical across millions of devices, provided that the devices are playing the same MP3 file and the audio equipment used to play the file is functioning properly.

This is because digital audio files like MP3s are made up of a sequence of 1s and 0s, which represent the audio waveform as a series of discrete samples. When the MP3 file is played back, the audio equipment reads the sequence of samples and converts it back into an analog signal that can be played through speakers or headphones. Since the digital information in the MP3 file is the same regardless of the device playing it, and the conversion process is deterministic and standardized, the resulting audio output should be the same across all devices. Of course, the quality of the audio output can still be influenced by factors such as the quality of the audio equipment, the environment in which the music is played, and the listener's perception of the sound.

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