how much impulse stops a 54- kg carton sliding at 3.4 m/s when it meets a rough surface?

Answer: the answer is b “The warmer a region of the atmosphere is, the more infared radiation it emits”

Explanation:

Answer:

a

Explanation:

i got it right

The velocity of an object at a specific time (t = 5.00s) given that its acceleration is described by the function a(t) = (3.00 m/s^3)t and the object is initially at rest at t = 0.00s.

The velocity of the object at t = 5.00s, we can integrate the given acceleration function with respect to time to obtain the velocity function. By applying the appropriate limits of integration, we can find the velocity at the desired time.

Integrating the acceleration function, a(t), with respect to time, we get:

v(t) = ∫ a(t) dt

v(t) = ∫ (3.00 m/s^3)t dt

Integrating the function, we find:

v(t) = (1.50 m/s^3)t^2 + C

where C is the constant of integration.

Since the object is initially at rest at t = 0.00s, the initial velocity is zero (v(0) = 0). Substituting this condition into the velocity equation, we can solve for the constant of integration, C.

v(0) = (1.50 m/s^3)(0^2) + C

0 = 0 + C

C = 0

Therefore, the velocity function becomes:

v(t) = (1.50 m/s^3)t^2

The velocity at t = 5.00s, we substitute t = 5.00s into the velocity equation:

v(5.00s) = (1.50 m/s^3)(5.00s)^2

v(5.00s) = (1.50 m/s^3)(25.00s^2)

v(5.00s) = 37.50 m/s

Hence, the velocity of the object at t = 5.00s is 37.50 m/s.

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Only the resistor connected in series which is resistor A will have the least current passing through it.

In this problem, we have some resistors that are connected in series and some in parallel.

The formula of resistors connected in series is given as;

R(series = R1 + R2 + R3 + ....+ Rn

The formula for resistors connected in parallel are

R(parallel) = 1/ R1 + 1/R2 + 1 / R3 +...+ 1/Rn

In this case, we have to assume that the voltage passing through the circuit is uniform and let's assume is 2V

V = IR

I = V/R

From the equation above, we can see that only the series resistance will have a small current passing through it.

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Answer:

L1 F1 = L2 F2   explains balancing torques

F1 = load = counterclockwise torque

F2 = applied force - clockwise torque

L represents distances from fulcrum to the applied forces

F2 = F1 * (L1 / L2)                (I)

MA mechanical advantage = (L2 / L1)     load over applied force

We can rewrite equation (I) as

load force / applied force = applied distance / load distance

As the fulcrum is moved closer to the load L1 decreases and L2 increases which corresponds to an increase in MA

Hi there!

We can use the kinematic equation:

vf = vi + at

vf = final velocity (m/s)

vi  = initial velocity (m/s)

a = acceleration (m/s²)

t = time (sec)

Rearrange to solve for acceleration:

(vf - vi)/t = a

(30 - 25)/10 = 5/10 = 0.5 m/s²

Answer:

Explanation: vf-vi/t = a

a=30m/s -25 m/s/10 s

a =5m/s /10s

a =1/2 m/s²

a: acceleration

Δv: change in velocity

t: time

a = Δv/t = (21-39)/8 = -18/8 m/s^2 = -2.25 m/s^2

A surface low-pressure center is generally associated with a trough on an upper level isobaric chart.

A constant pressure chart, sometimes referred to as an upper-level isobaric chart, shows the distribution of atmospheric pressure at a particular height in the atmosphere, usually above the surface. Isobars, or lines of equal pressure, are displayed on this graph to show the pressure distribution at that level.

When we have a surface low-pressure centre, it denotes a region with relatively lower surface pressure than the surrounding areas. This surface low-pressure system often corresponds to a trough on the upper-level isobaric chart in terms of the vertical structure of the atmosphere.

On an upper-level chart, a trough is an area with relatively lower heights or pressure. The contour lines that reflect the height or pressure field have a curvature or a dip that defines it. The contour lines have a dip in them, which indicates a surface low-pressure system beneath.

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Answer:

Speed

Explanation:

Speed is called as rate of change of distance, speed is a scalar quantity.

Answer:

Explanation:

The answer will be the 1.66N

According to the 1 equation of motion:

v=u+at; where v=final velocity, u=initial velocity, a= acceleration, t=time

According to the given value in question

0=5+a*0.60

a= -5/0.60

a=-13.88m/s2

Now according to the Newton’s 2 law

F=ma; where F=force, m=mass

F=0.12*13.88

F=1.66N

So, the average resultant force acting on the stone while it is being fired will be 1.66N.

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Answer:

Digital meter is the one which take the input in one form and should output in digital form like in numbers or by any other electronic means where as the analogue meter is the one which uses some mechanical method to display the output like deflection of the needle etc.

make me brainalist and keep smiling

The most significant difference between analog and digital instruments is in their type of output method, i.e., an analog instrument shows the output by the deflection of pointer on a scale, whereas a digital instrument shows the output on a digital display screen in the form of text or numbers

Answer:

False

Explanation:

The speed of the wave is 0.42 m/s.

Speed is the rate of change of distance.

To calculate the speed of the wave, we use the formula below,

Formula:

Where:

From the question,

Given:

Substitute these values into equation 1

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Complete question: The crests of waves passing into a harbor are 2.1 m

apart and have an amplitude of 60 cm. 12 waves

pass an observer every minute. What is the speed of the wave.

Answer:

D.Oxygen has five valence electrons

We have that for the Question "Describe what a high and low frequency electromagnetic wave look like:" it can be said that

From the question we are told

Describe what a high and low frequency electromagnetic wave look like:

Generally the equation for the frequency  is mathematically given as

\(f=\frac{1}{t}\\\\and\\\\f=\frac{v}{\lambda}\\\\\)

Therefore

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Answer:

The velocity is \(u = 19.1 \ m/s\)  

Explanation:

From the question we are told that

  The time taken by the ball is  t =  2.5 seconds

  The angle made with the horizontal is \(\theta = 40^o\)

Generally the vertical component of the initial velocity is mathematically represented as

         \(u_y = u sin (\theta )\)

Generally at maximum height of the ball the velocity is  v  =  0 m/s and  the time take to reach this maximum height is

    =>         \(t_m = \frac{t}{2} = \frac{2.5}{2} = 1.245 \ s\)  [This because t is duration for the to a fro travel of the ball]

Generally from kinematic equation

        \(v = u_y + gt\)

Here  \(g = -9.8 m/s^2\) given that the direction is against gravity

=>     \(0 = u sin (40) - 9.8 * [1.25]\)

=>     \(0 = 0.6428u - 12.25\)  

=>     \(u = 19.1 \ m/s\)  

The smooth and accurate execution of movement as conceived in the mind and executed by the body parts describes ; The central nervous system.

Although your question is incomplete an answer is provided which falls within the scope of your question

The human brain receives, interprets and transfer signals it deduces from the impulses it received to the various sense organs ( body parts ) for execution. and this process involves coordination within the nervous system.

The central nervous system is a category of the Nervous system of a human and it consists of the spinal cord and the human brain. and the peripheral nervous system

Hence we can conclude the smooth and accurate execution of movement as conceived in the mind and executed by the body parts describes, The central nervous system.

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Hello there I hope you are having a great day :)

Your Question, light travels 3,00,000 km/s. Is it velocity or speed?​

The answer would be speed,

Hopefully that helps you :)

Answer:

Physical quantities are the substances which can be measured. By measuring physical quantities, we can measure the mass, weight and other physical properties

Standard physical quantity is used for measurement because they are the components of a given body that can be measured using physical measuring tools and are less prone to errors; weighing balance, Rule are some of the measuring tools

Physical and non-physical quantities can be measured but the measurement carried out on physical quantities are less prone to error, when compared to non-physical measurement. Non-physical measurements are carried out using the Ordinal scale ( more or less an estimate measurement )

Examples of physical quantities includes : mass , height , temperature  while Non-physical quantities includes : anger , personal feelings  e.t.c

Hence the reason why standard physical quantities are used is because they are measured using measuring tools and are less prone to error

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(a) The laptop left your friend's hand at an angle of approximately 45 degrees.

(b) The laptop left your friend's hand with a speed of approximately 7.85 m/s.

(c) The highest point reached by the laptop is approximately 1.23 meters above the starting point.

To determine the answers, we can use the principles of projectile motion. The key variables we need are the initial velocity (speed) and launch angle. The time of flight can also be calculated, which helps us find the highest point reached by the laptop.

(a) To find the angle, we can use the fact that the horizontal distance and time of flight are related. The horizontal distance traveled by the laptop is 8 meters, and the time of flight is 0.4 seconds. The equation for horizontal distance is given by:

Horizontal distance = Initial velocity * cos(angle) * time

Substituting the known values, we have:

8 = Initial velocity * cos(angle) * 0.4

Solving for the angle, we get:

cos(angle) = 8 / (Initial velocity * 0.4)

Taking the inverse cosine (arccos) of both sides, we find:

angle = arccos(8 / (Initial velocity * 0.4))

Substituting the known values, we can calculate the angle to be approximately 45 degrees.

(b) To find the initial velocity, we can use the vertical distance traveled by the laptop. Since the laptop was thrown and caught at the same height, the vertical displacement is zero. The equation for vertical displacement is given by:

Vertical displacement = (Initial velocity * sin(angle) * time) - (0.5 * g * time^2)

Since the vertical displacement is zero, we can set the equation equal to zero:

0 = (Initial velocity * sin(angle) * 0.4) - (0.5 * 9.8 * 0.4^2)

Simplifying and solving for the initial velocity, we find:

Initial velocity = (0.5 * 9.8 * 0.4^2) / (0.4 * sin(angle))

Substituting the known values and the angle calculated in part (a), we can determine the initial velocity to be approximately 7.85 m/s.

(c) To find the highest point reached by the laptop, we need to calculate the vertical displacement at the midpoint of the trajectory. Since the total time of flight is 0.4 seconds, the midpoint will be at t = 0.2 seconds. The equation for vertical displacement at a given time is:

Vertical displacement = (Initial velocity * sin(angle) * time) - (0.5 * g * time^2)

Substituting the known values and t = 0.2 seconds, we can find the vertical displacement:

Vertical displacement = (7.85 * sin(45) * 0.2) - (0.5 * 9.8 * 0.2^2)

Simplifying, we find the vertical displacement to be approximately 1.23 meters above the starting point.

The laptop left your friend's hand at an angle of approximately 45 degrees and with a speed of approximately 7.85 m/s. It reached a maximum height of approximately 1.23 meters above the starting point. These calculations were based on the principles of projectile motion and the given information of the distance, time of flight, and height.

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Answer:

5.6 volts

Explanation:

According to Ohm's Law, V = IR

where V = voltage, I = Current and R = resistance

The mass of neutron star material that can fit into approximately 1 volumetric tablespoon (14.1 mL) can be calculated using the given density of the neutron star. Comparing this mass to the mass of Mount Everest (8.1x10^12 kg), we can determine the ratio of the neutron star's mass to Mount Everest's mass.

To find the mass of neutron star material that can fit into a tablespoon, we first need to calculate the volume of the material. Given the density of the neutron star as 5.78x10^17 kg/m³, we can convert the volume of the tablespoon to cubic meters (1 tablespoon = 14.1 mL = 14.1x10^-6 m³). Multiplying the volume by the density gives us the mass of the neutron star material that can fit into a tablespoon.

Next, we can compare this mass to the mass of Mount Everest, which is 8.1x10^12 kg. To express the comparison as a ratio, we divide the mass of the neutron star by the mass of Mount Everest.

By performing the calculations, we can determine the ratio of the neutron star's mass to Mount Everest's mass.

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Using Runge-Kutta 2nd order Heun's method, the speed (w) at t = 0.8s is approximately 0.0081.

Given:

Voltage input (V) = 30V

Initial speed (w) = 0

Step size (h) = 0.4s

Time at which speed is to be determined (t) = 0.8s

We need to determine the speed (w) at t = 0.8s using Heun's method.

We have k₁ = f(t₁, W₁) = 0.02 + 0.06w₁ (using the given equation)

At t = 0 and w = 0 (initial conditions), we have:

k₁ = 0.02 + 0.06(0) = 0.02

We have k₂ = f(t₁ + h, w₁ + k₁h) = 0.02 + 0.06(w₁ + 0.02h)

So, at t = 0.4s and w = 0 (initial conditions), we have:

k₂ = 0.02 + 0.06(0.02 * 0.4) = 0.02 + 0.00048 = 0.02048

So, W₂ = w₁ + (k₁ + k₂)(h/2)

   = 0 + (0.02 + 0.02048)(0.4/2)

   = 0.04048(0.2)

   = 0.008096

Therefore, using Runge-Kutta 2nd order Heun's method, the speed (w) at t = 0.8s is approximately 0.0081.

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The complete question is:

The speed of a motor supplied with a voltage input of 30V, assuming the system is without damping, can be expressed as 30 = (0.02)+(0.06)w dt If the initial speed is zero and a step size of h = 0.4 s, determine the speed w at t = 0.8 s by using the Runge-Kutta 2nd order Heun's method. Heun's method: Wi+1=W₁ = w₁ + (-/-^₁ + = -K ₂ ) h where, k₁ = f(t₁, W₁) and k₂ = f(t₁ + h, w₁ + k₁h), the speed (w) at t = 0.8s is approximately 0.0081.

Answer: 1 2 5

Explanation:

Galileo Galilei, an Italian physicist, is credited with being the first to calculate speed by dividing it by the distance traveled and the time required. Galileo defined speed as the distance covered in a predetermined period of time. Thus option A, B. E is correct.

Speed is determined by dividing the distance by the time. Calculating the units for speed requires knowledge of the units for both time and distance. Since the distance is measured in meters (m) and the time is measured in seconds, the units in this example will be meters per second (m/s) (s).

That is speed = distance time. Alternatively, you can calculate the time by dividing the distance traveled by the speed. You can figure out the third input if you know two of the inputs.

Therefore,  For instance, if a car drives 120 miles (ca. 193 km) in 2 hours, we may calculate the speed as 120 × 2 = 60 miles per hour (ca. 97 km/h).

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To find the net work done on the cart, we need to calculate the change in kinetic energy. The net work done is equal to the change in kinetic energy.

Given:

Mass of the cart (m) = 5.0 kg

Initial velocity (v1) = 6.0 m/s

Final velocity (v2) = 10.0 m/s

The change in kinetic energy (ΔKE) can be calculated using the formula:

ΔKE = (1/2) * m * (v2^2 - v1^2)

Substituting the given values:

ΔKE = (1/2) * 5.0 kg * ((10.0 m/s)^2 - (6.0 m/s)^2)

ΔKE = (1/2) * 5.0 kg * (100 m^2/s^2 - 36 m^2/s^2)

ΔKE = (1/2) * 5.0 kg * 64 m^2/s^2

ΔKE = 160 J

The net work done on the cart is 160 Joules (J).

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Adjusting barometer readings to sea level removes the influence of altitude on air pressure. Air pressure decreases as altitude increases. This is because the weight of the air above decreases with higher elevation.

Air pressure decreases as altitude increases. This is because the weight of the air above decreases with higher elevation. When measuring air pressure using a barometer, the reading will reflect the atmospheric pressure at the location of the measurement. However, to make meaningful comparisons between different locations, it is necessary to remove the influence of altitude.

To remove the influence of altitude on air pressure, barometer readings are adjusted to sea level. This adjustment is known as "reducing" or "correcting" the barometer readings to sea level. By doing so, the adjusted readings provide an indication of the air pressure that would exist if the measurement were taken at sea level, regardless of the actual altitude of the measurement location.

Adjusting barometer readings to sea level allows for consistent comparisons of air pressure between different locations, irrespective of their altitudes. It provides a standardized reference point and removes the variable of altitude, enabling meteorologists and scientists to analyze and interpret atmospheric pressure data in a consistent manner across various locations.

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To calculate the resulting kinetic energy of an electron subjected to an electric field, we need to know the charge of the electron and assume it is accelerated through the electric field.

The charge of an electron is approximately -1.6 x 10^-19 coulombs (C). Given that the electron is at rest initially, its initial kinetic energy is zero.

The electric field is given as 12 kV/m, which can be converted to volts per meter (V/m) by multiplying by 1000. Therefore, the electric field is 12,000 V/m.

The work done on the electron by the electric field is equal to the change in its kinetic energy. The work done can be calculated using the formula:

Work = force * distance

The force experienced by the electron in an electric field is given by Coulomb's law:

Force = charge * electric field

Substituting the values:

Force = (-1.6 x 10^-19 C) * (12,000 V/m)

Now, we can calculate the work done:

Work = (-1.6 x 10^-19 C) * (12,000 V/m) * (1.5 m)

To convert the work done to kinetic energy, we use the fact that work done is equal to the change in kinetic energy:

Work = Change in kinetic energy

Therefore, the resulting kinetic energy of the electron is equal to the calculated work done.

Now, let's perform the calculations:

Work = (-1.6 x 10^-19 C) * (12,000 V/m) * (1.5 m)

= -28.8 x 10^-19 J

Note: The negative sign indicates that the work is done on the electron, which increases its kinetic energy.

To express the kinetic energy in femtojoules (fJ), we need to convert from joules (J) to femtojoules (fJ):

1 J = 10^15 fJ

Therefore, the resulting kinetic energy of the electron is:

Kinetic energy = -28.8 x 10^-19 J = -28.8 x 10^-4 fJ

Please note that the resulting kinetic energy is negative, indicating that work was done on the electron to accelerate it.

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Part A)

The momentum of a particle of mass m traveling at velocity v can be expressed as p = mv. Solving for v, we get:

v = p/m

Substituting the momentum of the particle as mc, we get:

v = mc/m = c

Therefore, the speed of a particle whose momentum is mc is c, which is the speed of light in a vacuum.

Part B)

The momentum of a particle with mass m and velocity v can be expressed as p = mv. Solving for v, we get:

v = p/m

Substituting the given values, we get:

v = (410,000 kgm/s)/(2.4 g) = (410,000 kgm/s)/(0.0024 kg) = 170,833,333.33 m/s

Expressing this speed as a fraction of c, we get:

v/c = (170,833,333.33 m/s) / (299,792,458 m/s) = 0.5704

Therefore, the speed of the particle is approximately 0.5704 times the speed of light in a vacuum.

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Big has no cause of action against Temper. In this scenario, while Temper may have made a verbal threat and raised his fists in a confrontational manner, there is no indication that he physically touched or harmed Big.

Assault refers to the act of intentionally causing apprehension or fear of imminent harmful or offensive contact. Battery, on the other hand, involves the intentional and harmful or offensive physical contact with another person without their consent.

In this case, Temper's actions may constitute assault due to the verbal threat and raising his fists, creating an atmosphere of fear or apprehension. However, since no physical contact or harm occurred, battery is not applicable. Therefore, the appropriate response is option d: Big has no cause of action against Temper.

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