An object of mass 2.5 kg is moving in the negative x direction at a velocity of 2.0 m/s. It experiences a force of 4 N for 3 seconds. What is the final velocity after the object has experienced the impulse?

Answer:

the wavelength is 9.8 meters

Explanation:

We can use the relationship:

Velocity = wavelenght*frequency.

Initially we have:

wavelenght = 4.9m

velocity = 9.8m/s

then:

9.8m/s =  4.9m*f

f = 9.8m/s/4.9m =  2*1/s

now, if the velocity is doubled and the frequency remains the same, we have:

2*9.8m/s = wavelenght*2*1/s

wavelenght = (2*9.8m/s)*(1/2)s = 9.8 m

Answer:

9.8

Explanation:

Answer:

PRESSURE is a force exerted by the substance per unit area on another substance.

The key difference between water pressure and air pressure is that one is made up of water and the other is made up of air. Both air pressure and water pressure are based on and follow the same physical principals.

Explanation:

The image shows the correct way of lining up vectors to add them together, that the two arrows lined up one after the other, therefore the correct answer is option B.

The quantities that contain the magnitude of the quantities along with the direction are known as the vector quantities.

Examples of vector quantities are displacement, velocity acceleration, force, etc.

Thus, the image shows the correct way of lining up vectors to add them together, that the two arrows lined up one after the other, therefore the correct answer is option B.

Learn more about the vector quantity here ,  refer to the link given below ;

https://brainly.com/question/15516363

#SPJ1

Answer:

30N

Explanation:

(a) There is only one degree of freedom in this problem since the collar can move along the shaft but cannot rotate. The constraints are that the distance between the collar and the pivot point is always equal to l, and the collar cannot move perpendicular to the shaft.

(b) The forces acting on the collar are the spring force and the gravitational force. Since the collar is sliding along a frictionless shaft, there is no frictional force. The equation of motion for the collar is given by:

m(d²x/dt²) = -k(x-l) - mg

where x is the displacement of the collar from its equilibrium position.

(c) The normal force between the collar and the shaft is perpendicular to the shaft and balances the component of the gravitational force that is perpendicular to the shaft. As the collar moves away from its equilibrium position, the spring force becomes unbalanced and the normal force changes accordingly. The normal force is given by:

N = mgcos(θ) + k(x-l)sin(θ)

where theta is the angle between the shaft and the vertical axis.

To learn more about force refer to:

brainly.com/question/13191643

#SPJ4

A ray of light is travels through air (n = 1.00) and into a Lucite block. Its velocity slows to 2.14 x 10⁸ m/s. The index of refraction for Lucite is 1.40.

An optical media's refractive index, also known as refraction index, is a dimensionless number that indicates how well the medium bends light.With wavelength, the refractive index may change. When refracted, this allows white light to separate into its component hues. It's known as dispersion. In prisms, rainbows, and as chromatic aberration in lenses, this phenomenon can be seen. A refractive index with a complex value can be used to describe how light moves through absorbent materials. The attenuation is then taken care of by the imaginary part, while refraction is handled by the real part. For the majority of materials, the refractive index varies by several percent with wavelength over the visible spectrum.

The index of refraction for Lucite can be calculated by using the equation,

n = \(\frac{c}{v}\), where c is the speed of light in a vacuum and v is the speed of light though Lucite.

So, in this case,

n =\(\frac{3 * 10^8}{2.14*10^8}\) = 1.40

To know more about  chromatic aberration, visit:

https://brainly.com/question/7550245

#SPJ1

Answer:

Someone who writes software or programs for computers is called a programmer.

Explanation:

Answer:

The pressure of liquid column is given by p=hpg, where h is depth, p is density and g is acceleration due to gravity.

Therefore, pressure of the liquid column increases with depth. The height of the blood column in a human body is more at feet than at the brain. Therefore, the blood pressure in humans is greater at the feet than the brain.

Answer:

the above answer is correct hope it's help you have a great day ☺☺keep smiling be happy stay safe

Answer:

C. A quantity with magnitude and a direction.

Explanation:

A vector can be defined as a quantity with magnitude and direction. Some examples of vector quantities are velocity, position, displacement, force, torque, acceleration.

For example, given the following data;

Time, t = 18.5secs

Final velocity = 78m/s

Initial velocity = 0

Substituting into the equation;

\(a = \frac{78 - 0}{18.5}\)

\(a = \frac{78}{18.5}\)

Acceleration, a = 4.22m/s²

Therefore, the acceleration of the object is 4.22m/s² due North.

In physics, acceleration can be defined as the rate of change of the velocity of an object with respect to time.

This simply means that, acceleration is given by the subtraction of initial velocity from the final velocity all over time.

Hence, if we subtract the initial velocity from the final velocity and divide that by the time, we can calculate an object’s acceleration.

Mathematically, acceleration is given by the equation;

\(Acceleration (a) = \frac{final \; velocity - initial \; velocity}{time}\)

\(a = \frac{v - u}{t}\)

Where,

a is acceleration measured in \(ms^{-2}\)

v and u is final and initial velocity respectively, measured in \(ms^{-1}\)

t is time measured in seconds.

Answer:

C. A quantity with magnitude and a direction.

Explanation:

A physical Quantity, which has magnitude, direction and units But must follow the traingle law of vector addition

Answer:

322.6 m/s

Explanation:

Given that there are two components of position;

x= vot

y component is;

y= 1.9 - gt^2/2

When the bullet hits the ground, y=0

1.9 -gt^2/2 =0

Where g = 10ms^-2

t= √2 × 1.9/10

t= 0.62 secs

Therefore,

x= vot

vo = x/t

Where, x= 200 m

vo= 200/0.62 =

vo= 322.6 m/s

Answer:

The mechanical energy of the cardboard box, M.E. = K.E. + P.E.

Where;

P.E. = The potential energy of the cardboard box = m·g·h

K.E. = The kinetic energy of the cardboard box = (1/2)·m·v²

Where;

m = Mass of the cardboard box

g = The (constant) acceleration due to gravity ≈ 9.81 m/s²

h = The height of the cardboard box

v = The velocity of the cardboard box

At the top of the fall, where h = The height of the platform = \(h_{platform}\), and v = 0 (the box is initially at rest at the top), the M.E. is given as follows;

\(M.E._{top}\) = P.E. + K.E. = m·g·\(h_{platform}\) + (1/2) × m × 0² = m·g·\(h_{platform}\)

However, at the bottom of the fall, the height of the box, h = 0, the velocity of the box, v = 0, therefore, the total energy at the bottom, after the box comes to rest, \(M.E._{bottom}\) = 0

Therefore;

The total energy of the box at the top of the fall, .\(M.E._{top}\) = m·g·\(h_{platform}\) was more than the total energy of the box at the bottom of the fall,

\(M.E._{bottom}\) = 0

Explanation:

Answer:

There are \(9.537\times 10^{-23}\) kilograms of radioactive material after 300 seconds.

Explanation:

From Physics we know that radioactive materials decay at exponential rate, whose differential equation is:

\(\frac{dm}{dt} = -\lambda\cdot m\) (1)

Where:

\(\frac{dm}{dt}\) - Rate of change of the mass of the radioactive material, measured in kilograms per second.

\(m\) - Current mass of the radioactive material, measured in kilograms.

\(\lambda\) - Decay constant, measured in \(\frac{1}{s}\).

The solution of the differential equation is:

\(m(t) = m_{o}\cdot e^{-\lambda\cdot t}\) (2)

Where:

\(m_{o}\) - Initial mass of the radioactive material, measured in kilograms.

\(t\) - Time, measured in seconds.

If we know that \(m_{o} = 20\,kg\), \(\lambda = 0.179\,\frac{1}{s}\) and \(t = 300\,s\), then the initial mass of the radioactive material is:

\(m(t) = (20\,kg)\cdot e^{-\left(0.179\,\frac{1}{s} \right)\cdot (300\,s)}\)

\(m(t) \approx 9.537\times 10^{-23}\,kg\)

There are \(9.537\times 10^{-23}\) kilograms of radioactive material after 300 seconds.

The  value in terms of 1m of oil is 1.25

To convert the pressure at a point from 1 meter of water to its equivalent value in meters of oil, we can use the following formula:

Pressure = height × density × gravity

Let's first find the pressure exerted by 1 meter of water.

1 g x 0.8 = 0,8

1 x g x 1m = 0.8 x g * h2

We are to solve for h2

h2 = 1 / 0.8

= 1.25

Hence tghe  value in terms of 1m of oil is 1.25

Read more on pressure here:https://brainly.com/question/28012687

#SPJ1

Answer: A gram of gold is worth about $25, so 2 grams or better would be viewed as high-grade for bulk tonnage mining.

Explanation:

i looked it up.

The current in the heating element when it is connected to 120 V is 21.67 A.

The current in the heating element can be calculated using the formula I = P/V, where I is the current in amperes, P is the power in watts, and V is the voltage in volts.
Given:
P = 2,600 W
V = 240 V
Plugging in the values into the formula, we get:
I = 2,600 W / 240 V = 10.83 A
Now, if the heating element is connected to 120 V, we can use the same formula to calculate the current:
I = P/V = 2,600 W / 120 V = 21.67 A

Learn more about heating element: https://brainly.com/question/14207701

#SPJ11

The statement "topping off when filling up your gasoline tank helps lower emissions" is FALSE.

When we fill our gasoline tanks, there is often a natural tendency to squeeze the handle for just a little bit longer to make sure that the tank is completely full, or to round up to the nearest dollar amount. This is referred to as "topping off," and it is not a good practice because it is unnecessary and can cause more harm than good.

Firstly, topping off isn't necessary because modern gas pumps are equipped with automatic shut-off valves that prevent gasoline from being dispensed once the tank is full. Topping off your tank also means you're running the risk of overfilling the gas tank, which can cause fuel spills to occur. When fuel spills occur, they can evaporate into the air and contribute to ground-level ozone formation and smog.

Furthermore, when gasoline spills onto the ground, it can also contaminate nearby water sources and harm wildlife. Finally, excess fuel can build up in the engine's evaporative emissions control system when a tank is overfilled. This can result in a malfunctioning emission control system, which can ultimately lead to increased air pollution and smog formation.

To know more about emission control system, refer to the link below:

https://brainly.com/question/28147343#

#SPJ11

Answer:In short yes in long

Explanation:yes all substances can exist in any of these three states. In addition to existing in one of the three states, matter can also undergo a change of state. A change of state occurs when matter is converted from one state to another state for example when a liquid is converted to a gas or a solid is converted to a liquid.

The first sign of carburetor ice would probably be a decrease in rpm if an aircraft had a fixed-pitch propeller and a float-type carburetor.

The temperature decrease in the carburetor as a result of gasoline evaporation and the temperature loss related to the pressure drop in the venturi is what lead to carburetor ice.

The temperature decrease in the carburetor is what leads to carburetor icing. The throttle valve will get frozen with water vapor if the temperature falls below freezing.

While initially increasing the Venturi effect, this ultimately inhibits airflow. When the outside air temperature is below 70 degrees F, carb icing most frequently happens (21 degrees C).

Engine sluggishness, loss of RPM, and loss of manifold pressure are signs of carb ice. In general, if you suspect carb ice, immediately administer carb heat or alternative air.

Hence, the first sign of carburetor ice would probably be a decrease in rpm.

To learn more about the carburetor ice refer;

https://brainly.com/question/14305701

#SPJ1

Answer:

To say we have a 12.0-V battery implies that its terminals have a 12.0-V likely contrast. At the point when such a battery moves charge, it puts the charge through an expected distinction of 12.0 V, and the charge is given an adjustment of potential energy equivalent to Δ U = q Δ V .

six cells

There are six cells to a 12 volt lead corrosive battery. A battery cell's greatest capacity to convey current (amps).

A 6 cell lithium particle pack has an ostensible voltage of 21.6V to 22.2V and a most extreme charge voltage of 25.2 volts

Explanation:

A goat that is being pushed by Abigail through a gate. It takes her 4 seconds and 800 J of work.

The amount of electricity Abigail produces Identity foreclosure on identity

Identity foreclosure, or having an identity but only having ideas and characteristics they have just absorbed from their parents, friends, or group, is a characteristic of adolescence. In addition to having a distinct identity and being prone to discovering it,

Identity foreclosure young individuals in this age group also have a propensity to be influenced by a variety of factors, most notably their families and environments.

In other words, young individuals at this age are still not open to explore new possibilities and concepts; instead, they are following established norms.

Combining the urgent need to delve into one's own identity with

To learn more Identity foreclosure Visit : https://brainly.com/question/14214421

#SPJ9

Explanation:

Q = energy applied

m = mass

C = specific heat

ΔT = delta T = change in temperature

The time cat will take to run 5.5km is 55.89 minutes.

according to given details,

distance = 13.1m

time = 8 s

speed = ?

distance (b) = 5.5km = 5500m

time = ?

speed = ?

So by using formula,

speed = distance / time

speed = 13.1m/8s

speed = 1.64 m/s

As now we have speed using same formula

s = d / t

t = d / s

t = 5500m / 1.64 m/s

t = 3,353.65 sec

t = 55.89 minutes

Speed is calculated as distance times speed. You need to be aware of the units for distance and time in order to calculate the units for speed. The units in this example will be metres per second (m/s), since the distance is measured in metres (m) and the time is measured in seconds (s).

To know more about time :

https://brainly.com/question/15356513

#SPJ9

The student should perform experiment 1: heat water and record its change in temperature with time.

To study the effect of adding thermal energy to a system, experiment 1 is the most suitable option.

By heating water and recording its change in temperature over time, the student can observe and analyze how the added thermal energy affects the system.

This will provide insight into the relationship between heat and temperature change.

Experiments 2, 3, and 4 are less relevant to the topic, as they involve freezing water (removing thermal energy) or closing circuits (which primarily relate to electrical energy rather than thermal energy).

For more such questions on temperature , click on:

https://brainly.com/question/26866637

#SPJ11

As a result, the combined ultimate velocity of the male and female skaters following the throw is 5.27 m/s.

The object's initial velocity can be calculated by dividing the total distance travelled by the amount of time it took the object to travel that distance. In the formula V = d/t, V is the speed, d the distance, and t the time.

Prior to the throw, the system's momentum is given by: p1 = m1v1 + m2v2.

replacing the specified values:

p1 = (82 kg)(7.4 m/s) + (48 kg)(0 m/s)

p1 = 607.6 kg m/s

Following the throw, the system's momentum is:

p2 = (82 kg)v' + (48 kg)(8.6 m/s)

where v' is the combined final speed of the male and female skaters. We may equate p1 and p2 using the conservation of momentum principle:

p1 = p2

(82 kg)(7.4 m/s) = (82 kg)v' + (48 kg)(8.6 m/s)

Simplifying and solving for v', we get:

v' = [ (82 kg)(7.4 m/s) - (48 kg)(8.6 m/s) ] / 82 kg

v' = 5.27 m/s

To know more about velocity visit:-

https://brainly.com/question/17127206

#SPJ1

The speed at which the stone hits the water is 13.6m/s and the initial height of the stone is 7.6m.

Initial velocity of stone =  6 ms⁻¹

At the maximum height, the final velocity, v = 0

Acceleration of the stone, g = 9.8 ms⁻²

Time taken to reach maximum height = t₁

t₁ = v - u/g

since the stone is travelling upwards, g = -9.8 m/s⁻²

t₁ = 0 - 6/-9.8

t₁ = 0.61 s

Time take to fall from maximum height, t = 2 - 0.61s

Time take to fall from maximum height = 1.39s

where u = 0 m/s

v = 0 + 9.8 * 1.39

v = 13.6 m/s

Initial height of stone = Height of bridge, H

Time taken by the stone to fall down from height, H in water, t = 2s

Initial velocity of stone = 6 ms⁻¹

Acceleration of the stone, g = 9.8 ms⁻²

H =  -6 * 2 + 9.8 * 2² /2

H = 7.6m

Therefore, the speed at which the stone hits the water is 13.6m/s and the initial height of the stone is 7.6m

Learn more about velocity and height at: https://brainly.com/question/13665920

(a) Maximum height reached by the ball is 10.1 meters, (b) the total time taken by the ball to return to the same level is 3 seconds, (c) distance from the thrower to the point where the ball returns to the same level is 72.7 meters.

Projectile motion refers to the motion of an object that is thrown or projected into the air and then moves under the influence of gravity alone.

We can use kinematic equations to solve this problem. Let's first split the velocity of the ball into its horizontal and vertical components:

vx = 28cos(30) = 24.24 m/s (horizontal component)

vy = 28sin(30) = 14 m/s (vertical component)

(a) The maximum height:

At the highest point of the ball's trajectory, the vertical component of velocity becomes zero (assuming no air resistance). We can use the kinematic equation:

vy^2 = v0y^2 + 2ayΔy

where vy = 0, v0y = 14 m/s, a = -9.8 m/s^2 (acceleration due to gravity), and Δy is the maximum height. Solving for Δy, we get:

Δy = v0y^2/2a = 14^2/(2*9.8) = 10.1 m

So the maximum height reached by the ball is 10.1 meters.

(b) The time taken by the ball to return to the same level:

The time taken by the ball to reach the maximum height can be found using the kinematic equation:

Δy = v0yt + 0.5a*t^2

where Δy = 10.1 m, v0y = 14 m/s, and a = -9.8 m/s^2. Solving for t, we get:

t = (sqrt(v0y^2 + 2aΔy))/a = (sqrt(14^2 + 2*(-9.8)*10.1))/(-9.8) = 1.5 s

The time taken by the ball to return to the same level is twice the time taken to reach the maximum height, since the ball follows a symmetric path. So the total time taken by the ball to return to the same level is 3 seconds.

(c) The distance from the thrower to the point where the ball returns to the same level:

The horizontal distance covered by the ball can be found using the kinematic equation:

x = v0x*t

where v0x = 24.24 m/s (constant velocity), and t = 3 s (total time taken). So the distance covered by the ball is:

x = v0xt = 24.243 = 72.7 m

So the distance from the thrower to the point where the ball returns to the same level is 72.7 meters.

Learn more about trajectory here:

https://brainly.com/question/28874076

#SPJ9

Answer:

\(E=1.58*10^6N/C\)

The direction is toward the negative x axis i.e the Rod

Explanation:

From the question we are told that:

Length \(L=14.0cm\)

Total charge \(q=-22.0\muC\)

Distance \(d=36cm=>0.36m\)

Generally the equation for Electric Field is mathematically given by

 \(E=\frac{kq}{d^2}\)

Since Magnitude of E is at 36cm away from center

 \(E=\frac{kq}{d^2-(L/2)^2}\)

 \(E=\frac{9*10^9*(22*10^6)}{0.36^2-(0.14m/2)^2}\)

 \(E=1.58*10^6N/C\)

Therefore with Charge Bearing the Negative sign the direction is toward the negative x axis i.e the Rod