A ball is initially moving at 6 m/s up a ramp. The acceleration of the ball is -2 m/s/s down the ramp. What is the balls velocity after 10 seconds? (frame of reference + is up the ramp)

Answer:

A car driving in a straight line 20 m/s

Explanation:

ayepecks silly

Typically, the size of the temperature change is 5oF/1000 ft change in elevation going up and 5oF/1000 ft coming down.

The temperature change of rising air is determined by the dry adiabatic lapse rate, while the temperature change of sinking air is determined by the dry adiabatic lapse rate and the relative humidity of the sinking air. Typically, the size of the temperature change is 5oF/1000 ft change in elevation going up and 5oF/1000 ft coming down. It is because rising air expands and cools; sinking air is compressed and warms.In the troposphere, the temperature change due to evaporation or condensation is 5oF/1000 ft change in elevation if evaporation or condensation are not happening, and 3oF/1000 ft change in elevation if evaporation or condensation are happening.In the atmosphere, the temperature change when air moves vertically varies greatly depending on the air mass' condition. If an air mass is stable, which means it is cooler and denser than the surrounding air, the temperature change is close to zero. But if the air mass is unstable, which means it is warmer and less dense than the surrounding air, the temperature change is significant because the air mass can continue to rise due to buoyancy. The rising air will continue to expand and cool as it rises until it reaches a point where the air temperature is equal to the environment temperature.

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complete question:  Rising air expands and cools; sinking air is compressed and warms. Typically, the size of the temperature change is:

a. 5oF/1000 ft change in elevation going up, and 5oF/1000 ft coming down.

b. 5oF/1000 ft change in elevation if condensation or evaporation are not occurring; 3oF/1000 ft change in elevation if condensation or evaporation are occurring.

c. No change if evaporation of clouds is occurring, and 5oF/1000 ft change in elevation if no changes are occurring in clouds.

d.3oF/1000 ft change in elevation.

e. No temperature change occurs when air moves vertically.

About half of Americans depend on groundwater for drinking water sources. Therefore option B is correct.

Groundwater is an important source of drinking water for many Americans. It is estimated that approximately half of the population in the United States depends on groundwater as their primary source of drinking water.

This includes households that rely on private wells as well as those served by public water systems that use groundwater sources.

Groundwater is obtained by drilling wells into underground aquifers, which are natural reservoirs of water stored beneath the Earth's surface. It is a valuable resource that provides a consistent and reliable supply of water for drinking, irrigation, industrial use, and other purposes.

While groundwater is a significant water source for many Americans, it is important to note that the availability and quality of groundwater can vary depending on location.

Some areas may have abundant and accessible groundwater resources, while others may face challenges such as limited availability or contamination issues.

Overall, groundwater plays a vital role in meeting the water needs of a significant portion of the American population, making option B, "About half," the most appropriate choice.

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Your question is incomplete, but most probably your full question was,

Which best describes how many

Americans depend on groundwater

for drinking water source?

A. Very few

B. About half

C. Almost everyone

Answer:

5

Explanation:

Formula for Mass (for this question)

\(mass=\frac{Force}{Acceleration}\)

mass= 1000N/200\(m^{2}\)=5

(pls do correct me if I have any mistakes it would rlly help others!)

The focal point of the solar cooker is 6.845 cm above the base.

For a parabolic reflector, the focal point (F) lies along the axis of symmetry, and the distance from the vertex to the focal point (the focus) is given by the equation:

4f = p

Where:

f = distance of the focal point from the vertex, and

p = depth of the paraboloid.

Given that the depth of the cooker is 27.38 cm, substitute this into the equation to find the focal point:

4f = 27.38 cm

f = 27.38 cm / 4

f = 6.845 cm

Therefore, the focal point of the solar cooker is 6.845 cm above the base.

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Answer:

Test multiple times

Explanation:

the more you test the experiment the better and more accurate result you will have also having a good setup or organized data will help with making it easier to execute the experiment.

The oscillator loses 0.156% of its mechanical energy during each cycle. As the system continues to oscillate, the amplitude will continue to decrease, and the percentage of energy lost in each cycle will increase.

The amplitude of a lightly damped oscillator decreases by 3.08% during each cycle, indicating that the system is losing energy with each oscillation. The percentage of mechanical energy lost in each cycle can be calculated using the following formula:

Percentage of energy lost = \($(1 - e^{-\zeta \pi})$\)

Where ζ is the damping ratio, and e is the mathematical constant approximately equal to 2.71828. The damping ratio is a dimensionless parameter that characterizes the system's response to damping. For a lightly damped oscillator, the damping ratio is small, typically less than 1.

Given that the amplitude of the oscillator decreases by 3.08% during each cycle, we can calculate the damping ratio as follows:

\($\zeta = \frac{\ln(1 - 0.0308)}{-\pi}$\)

ζ = 0.005

Substituting this value of ζ into the formula above gives us:

Percentage of energy lost = \($(1 - e^{-0.005\pi}) \times 100%$\)

Percentage of energy lost = 0.156%

Therefore, it is essential to minimize damping in mechanical systems to reduce energy loss and increase efficiency.

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The distance from the axis of the force applied is 2.05 m.

The distance from the axis of the force applied is calculated as follows;

The formula for torque;

τ = Fr

where;

Another formula for torque is given as;

τ = Iα

where;

τ = (mr²)α

τ = (25 kg x (0.925 m)²) x (1.84 rad/s²)

τ = 39.36 Nm

The distance is calculated as;

r = τ/F

r = ( 39.36 Nm ) / (19.2 N)

r = 2.05 m

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Answer:

1kg steam will have the maximum energy

Answer:

Attention

Explanation:

Hello there, fellow peer! The answer to question is attention. Let's say someone is the control. The behavioral expression is an element of expression, so the control will feel emotions. Subjective Experience is when someone felt the way you feel and they are trying to help you. That is a type of emotion which can lead to empathy for you. This is also not the answer. Physiological Arousal is also not the answer because this is when you can feel what someone else is feeling and you try to give them therapy.

Using the process of elimination, our answer is therefore attention.

Answer

It will stay the same!

Explanation:

If you so happen to move something from left to right, the size of it is not being shrunk or expanded in any type of way, shape, or form.

Answer:

Explanation:

The force on a charged particle moving in a magnetic field can be calculated using the formula:

F = qvBsinθ

where

F is the force on the particle

q is the charge of the particle

v is the velocity of the particle

B is the magnetic field strength

θ is the angle between the velocity and magnetic field vectors.

In this case, the charge on the particle is +3.0x10^-6C, its velocity is 300,000m/s, and the magnetic field is 1.4T. The angle between the velocity and magnetic field vectors is 90° because the particle is moving perpendicular to the magnetic field.

So, plugging in the values to the formula, we get:

F = (3.0x10^-6C)(300,000m/s)(1.4T)sin90°

F = (3.0x10^-6C)(300,000m/s)(1.4T)(1)

F = 1.26x10^-2 N

Therefore, the force on the particle is 1.26x10^-2 N to the left of the page, perpendicular to the velocity of the particle.

The statement voltage causes electric charges to move from higher to lower potential.

To understand the concept for the flow of the current we will discuss Ohm's law which states that -

The voltage is directly proportional to the current it means that the higher the voltage higher will be the flow of current.

It is given as

V ∞ I

V=IR

The voltage is the inverse of the resistance More to decrease the effect of resistance we need to increase the voltage so there can be more electric current can flow.

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The angular momentum around the center of the merry-go-round is 512.5 kg m² / s.

The product of an object's mass and its velocity is its momentum. Momentum exists in all mass-moving objects. Only the fact that it deals with rotating or spinning objects makes angular momentum different.

L= m * r² (where m is mass and r is radius)

= 50 * 2.5²

= 312.5 kg m²

Now

w = v/r (where v is speed)

= 4.1 m/s / 2.5 m

= 1.64 rev/sec

So finally

The momentum = I * w

= 312.5 * 1.64

= 512.5 kg m² / s

The merry-go-round's initial angular momentum is 0 because it is at rest. The merry-go-round and child's angular velocity is zero (pivoted) if R is the merry-go-round's radius and I is its moment of inertia. In general, the centripetal force you experience increases with the size of the circle you move in.  

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The question is incomplete complete question is given below

A little girl is going on the merry-go-round for the first time, and wants her 50 kg mother to stand next to her on the ride, 2.5 m from the merry-go-round's center. Part A If her mother's speed is 4.1 m/s when the ride is in motion, what is her angular momentum around the center of the merry-go-round ?

The mass of the car, according to the inquiry, is 897.6 kg.

Mass is the measure of the amount of matter in an object. It is measured in kilograms (kg) in the International System of Units (SI), or in pounds (lb) or ounces (oz) in the imperial and US customary systems. Mass can also be measured using density, which is the ratio of mass to volume.

The kinetic and potential energies of the car can be added to get its total mechanical energy, which is 920,500 J. We know the height of the slope (1.2 m), the speed of the car (18 m/s), and that it is flying over the hill.

K = 0.5 x m x (18 m/s)²

U = m x 9.8 m/s² x 1.2 m

0.5 x m x (18 m/s)² = 920,500 J

m x 9.8 m/s² x 1.2 m = 920,500 J

Solving these two equations, we get m = 897.6 kg.

Therefore, the mass of the car is 897.6 kg.

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A satellite travels at a constant speed, its shape is a circle.

An integrated receiver and transmitter of radio signals known as a transponder, a satellite is essentially a self-contained communications system that can receive signals from Earth and retransmit those signals back to Earth.

The three primary parts of a satellite are the propulsion system, which includes the rockets that move the satellite, the power system, which includes the solar panels that supply power, and the communications system, which includes the antennae and transponders that receive and retransmit signals. To enter into the proper orbit and periodically adjust its position, a satellite needs a propulsion system of its own.

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Answer:

please help

Explanation:

Answer: 1.74

Explanation: “How do you calculate the mechanical advantage of a block and tackle pulley?To calculate the mechanical advantage, we can either divide the weight of the object being lifted by the force required to lift it or we can divide the amount of rope we have to pull by the distance the object moves."If we use the rope method the mech advantage is  33.0/16.5 = 2   now if we use the forces   MA = 225/129 =1.74 <==== this is not equal to '2' as we first found due to energy being lost to friction/deformation of rope etc.              SO I would say the truemechanical advantage = 1.74  Efficiency =  1.74/2 = 87%

(a) The initial temperature is 373.95 K.

(b) The final temperature is 546.15 K.

(c) The total internal energy change of the fluid during this process is 515.4 kJ.

(d) The process can be represented as an isochoric heating process on the P-v diagram and as an isobaric expansion process on the T-v diagram.

(a) To find the initial temperature, we can use the saturated steam tables. At a pressure of 200 kPa, the corresponding saturation temperature is 373.95 K.

(b) Since the volume doubles, the process is an isochoric (constant volume) heating process. Using the ideal gas law, we can determine the final temperature. The initial and final volumes are related by the equation V_final = 2V_initial. Since the mass remains constant, the specific volume (v) is inversely proportional to the density (ρ). Therefore, ρ_final = ρ_initial/2. Using the ideal gas law, we can calculate the final temperature to be 546.15 K.

(c) The total internal energy change can be calculated using the equation ΔU = mC_vΔT, where m is the mass of the fluid and C_v is the specific heat at constant volume. Given the mass as 0.5 kg, the specific heat of water at constant volume, and the temperature change, we can find that the total internal energy change is 515.4 kJ.

(d) On the P-v diagram, the process is represented as a vertical line at 200 kPa, indicating constant pressure. On the T-v diagram, the process is shown as an upward-sloping line, indicating an isobaric expansion process. The initial state is represented as a point on the left, and the final state is represented as a point on the right. The path between the initial and final states is a straight line connecting these two points.

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Answer:

Wright can be measured in pounds

Explanation:

Mass is the quantity of matter a body contains while weight is the measure of mass of a body. Weight is the product if mass and the acceleration due to gravity of a body.

If the mass of an object is known, we can determine the equivalent weight of such object and vice versa using the relationship W = mg

m is the mass if the object (in kg)

W is the weight

g is the acceleration due to gravity

g can be measured both on metre/seconds or lb/ft². This means that the weight of an object can be measured in both kgm/s² (Newton) and lb(pounds).

Also note that different object have different masses hence it is not always true to say that a bowling ball has the same mass as a golf ball.

Based on the explanation above, it can be concluded that Weight can be measured in pounds which gives the only correct statement.

Answer:

Weight can be measure in pounds

Explanation:

Answer:

Explanation:

Acceleration is the time rate of change, or the rate, of the velocity. Therefore, the slope y/x of a speed vs time graph would give the acceleration. If the acceleration is said to be positive, the graph would be a straight line that is at a constant increase over time.

In Plato's philosophy, Socrates believed that he should follow the laws of the state of Athens because he believed in the idea of the "philosopher-king."

Who was Socrates?

Socrates was a classical Greek philosopher, credited as one of the founders of Western philosophy. He is best known for his method of inquiry, called the Socratic method, and for his teaching style, which was dialogic and aimed at getting students to think critically and develop their own ideas.

According to Socrates, the laws of the state were a reflection of the absolute and unchanging moral values that exist in the world. He believed that as a philosopher, it was his duty to live in accordance with these moral values, and thus to follow the laws of the state. In this way, Socrates saw himself as a servant of the divine, and believed that by following the laws, he was serving the greater good and promoting the welfare of the city.

Hence, In Plato's philosophy, Socrates believed that he should follow the laws of the state of Athens because he believed in the idea of the "philosopher-king."

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Explanation:

0.75

According to the formula, P=IV

150 = I×200

If the Prothrombin Time controls 16 seconds rather than expected 12 seconds, the next step should be to run another control or to take another test measure.

Blood clotting time is measured by the prothrombin time (PT) test. Depending on the analytical technique, the normal range for prothrombin time falls between 12 and 13 seconds. A PT of 16 seconds is over the normal range and may point to a liver condition or a blood illness. The next step should be to speak with a doctor who can interpret the findings and, if required, suggest more tests.

A blood test called the prothrombin time (PT) calculates how long it takes for your blood to clot. It assesses the intrinsic and common coagulation pathways, identifying low fibrinogen levels and factor II, V, VII, and X deficiency. PT or pro time are other names for prothrombin time.

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If a van traveled 225 miles in 5 hours, then the van could travel 315 miles in 7 hours.

A mile is a unit of length in the imperial and United States customary systems of measurement. One mile is equal to 5,280 feet, 1,760 yards, or 1.609 kilometers. The word mile is derived from the Latin mille passus, meaning "a thousand paces." The mile was historically used as a unit of measurement for roads, and was once considered a basic unit of measurement in many countries, although usage has changed over time.

To determine how far a van could travel in 7 hours, you would need to know its average speed. If the van traveled 225 miles in 5 hours, you can calculate its average speed by dividing the distance traveled by the time it took to travel that distance:

225 miles / 5 hours = 45 miles per hour

Once you know the average speed of the van, you can calculate how far it could travel in 7 hours by multiplying the speed by the time:

45 miles per hour x 7 hours = 315 miles

So the van could travel 315 miles in 7 hours.

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To determine the period of the pendulum, we can use the formula for the period of a simple pendulum, which is T = 2π√(L/g), where T is the period, L is the length of the pendulum, and g is the acceleration due to gravity.

Given that the length of the rod is 1.00 m, we can plug this value into the formula:

T = 2π√(1.00/g).

Now, we need to calculate the effective length of the pendulum, which takes into account the mass distribution of the disk and rod. The effective length, Leff, can be calculated using the formula:

Leff = L + (1/2) * r^2 * (m_disk/m_rod),

where r is the radius of the disk, m_disk is the mass of the disk, and m_rod is the mass of the rod.

Plugging in the given values, we get Leff = 1.00 + (1/2) * 0.1^2 * (0.4/0.5) = 1.00 + 0.01 * 0.8 = 1.008 m.

Now, we can substitute the effective length into the period formula: T = 2π√(1.008/g).

Since the question does not provide the value of g, we can use the approximate value of 9.8 m/s^2 for the acceleration due to gravity.

Plugging in the values, we get T = 2π√(1.008/9.8) = 2π√(0.10285714) ≈ 2π * 0.320234 ≈ 2.01 seconds.

Therefore, the period of the pendulum is approximately 2.01 seconds.

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Answer:

the nearest whole number is 5

The pressure in your tires would decrease due to the decrease in temperature. The relationship between temperature and pressure is known as the ideal gas law.

which states that pressure and temperature are directly proportional to each other. As the temperature drops, so does the pressure in the tires. The ideal gas law formula is P1/T1 = P2/T2, where P1 is the initial pressure, T1 is the initial temperature, P2 is the final pressure, and T2 is the final temperature.

Using this formula and assuming that the volume of the tires remains constant, we can calculate the final pressure in the tires. P1 is 38 psi, T1 is 25°C + 273.15 (to convert to Kelvin) = 298.15 K, T2 is 0°C + 273.15 = 273.15 K. Plugging in the values, we get P2 = (38 psi * 273.15 K) / 298.15 K = 34.9 psi. Therefore, the pressure in your tires would be approximately 34.9 psi when the temperature drops to 0°C.

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Tornados are the most destructive versions of thunderstorms. Tornadoes have high winds and general speed compared to regular thunderstorms.