+ 9. What force (in units of Newtons) is needed to give a 3.5 m/s" acceleration to a 1200 kg car?
​

Answer:

gravity

Explanation:

if a Venus sized object is orbiting a star and a two neptune sized objects are orbiting closely the will pull and yank on the venus sized object heating it up and the star will pull back on the other panlets heating the insides of the planet (take io as an example)

Answer:

answer is 18.6111

you can easily convert km/hr into m/s

just divide it by 3.6

Answer:

v = 17.68 m/s

Explanation:

Given that,

While standing at a crosswalk, you hear a frequency of 510 Hz from an approaching police car.

After the police car passes, its frequency is 460Hz.

We need to find the speed of the police car.

The formula is as follows :

\(v=\dfrac{v_o(f-f')}{f+f'}\)

Put all the values,

\(v=\dfrac{343(510-460)}{510+460}\\\\=17.68\ m/s\)

So, the speed of the police car is 17.68 m/s.

Given data:

* The equation of the distance traveled by the body in terms of time is,

Solution:

The distance traveled by the body in time t = 3 s is,

The distance traveled by the body in time t = 3.2 s is,

Thus, the distance traveled between t = 3 s and t = 3.2 s is,

Thus, the body falls 19.84 ft or approx 20 ft in between 3 s and 3.2 s.

Fast moving rivers of air, known as jet streams, can reach speeds of 75 to 150 miles per hour (mph).

Jet streams are narrow bands of strong winds that flow in the upper levels of the atmosphere, typically between 25,000 and 35,000 feet above the Earth's surface.

These high-speed air currents are driven by the temperature and pressure gradients in the atmosphere, particularly between warm and cold air masses.

The jet streams flow in a wavy pattern from west to east, influenced by the rotation of the Earth and atmospheric conditions. They can extend thousands of miles in length and a few hundred miles in width.

Jet streams play a crucial role in weather patterns, affecting the movement of storms and the distribution of temperature and precipitation.

Aviation and weather forecasting heavily rely on understanding and monitoring the jet streams. Their high speeds can benefit air travel by reducing flight times for planes flying with the jet stream and increase fuel efficiency.

However, flying against the jet stream can result in longer flight durations and higher fuel consumption.

In summary, jet streams are fast-moving rivers of air with speeds ranging from 75 to 150 mph. They are important atmospheric phenomena that impact weather patterns and have implications for aviation and weather forecasting.

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The electrical force acting on the charge is 3.6 N.

The electrical force experienced by a charged object in an electric field is given by the equation F = qE, where F is the force, q is the charge, and E is the electric field strength.

Plugging in the values, we have

F = (9.0 × 10^(-5) C) × (4.0 × 10^4 N/C) = 3.6 N.

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Most helpful Answer~

There are no options~

Anyway If the ball is of bad quality it will get deflated/ or strike out.

' The must reasonable thing that could happen is that the ball will bounce'

*Smile* :)  

Increasing the distance between an electromagnet and the compass will cause the observed effect of the compass to decrease in strength

The strength of the magnetic field produced by an electromagnet decreases as the distance from the electromagnet increases. This means that if the distance between the electromagnet and the compass increases, the magnetic field that the compass is experiencing will weaken.

As a result, the observed effect of the compass will decrease in strength as the distance between the electromagnet and the compass increases.

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1. Astronomical observational patterns are used to determine the history of the universe by studying the light emitted or absorbed by celestial objects. Scientists analyze the patterns in the electromagnetic spectrum, such as the distribution of wavelengths, intensity, and spectral lines, to gather information about the composition, temperature, motion, and evolution of celestial bodies.

Astronomical observational refers to the act of observing celestial objects and phenomena in the field of astronomy. It involves the use of telescopes, detectors, and other instruments to collect data and study various aspects of the universe.

2. Mount Wilson and Mount Palomar Observatories were used to observe and collect data about space due to several reasons. Firstly, the locations of these observatories provide advantages for astronomical observations.

3. The NASA Mission Statement is: "To pioneer the future in space exploration, scientific discovery, and aeronautics research." This mission statement reflects NASA's commitment to advancing human knowledge, technological innovation, and exploration beyond Earth's boundaries. NASA aims to push the boundaries of scientific understanding, develop and test new technologies, explore the cosmos, and inspire the next generation of scientists and engineers.

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Answer:

d. hoop

Explanation:
When a hoop and a cylinder of equal mass roll down a ramp with height h, the hoop will have greater speed at the bottom of the ramp.

This is due to the difference in their moment of inertia.

The moment of inertia for a hoop is I = mR^2, while for a cylinder, it is I = (1/2)mR^2.

As the hoop and cylinder roll down the ramp, they both convert their gravitational potential energy (mgh) to kinetic energy.

The total kinetic energy for a rolling object consists of translational kinetic energy (1/2)mv^2 and rotational kinetic energy (1/2)Iω^2.

Since both objects have the same mass and height, their potential energies are equal.

However, the hoop has a larger moment of inertia, meaning more of its potential energy will be converted into rotational kinetic energy.

This leaves less energy for translational kinetic energy, resulting in a higher linear speed for the hoop at the bottom of the ramp.

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Answer:

Dead sea is full of salt.

Explanation:

The water of the Dead Sea is full of salt, which makes it much denser and heavier than freshwater. If you swim in it, you float very easily.

When salt is dissolved in water, for example sea water, dissolved salt adds to the mass of the water and makes the water denser than it would be without salt. Because objects float better on a dense surface, they float better on salt water than fresh water.

Using the concepts of capacitance, we got that   33Volt as the resulting potential difference if capacitors of values 6.0 mf and 9.0 mf are connected in series to a 30.0 v

We are given that capacitors are connected in series, so we firstly find the total capacitance of the whole connection.

When capacitors are connected in series ,then capacitance is given by

1/c=(1/c₁)+(1/c₂)

So, using this we get net total capacitance as

1/c=(1/6)+(1/9)

=>1/c= (6+4)/36

=>c=36/10

=>c=3.6mf

Now, we are given the voltage of whole connection as 30V

So, using this we find the total charge of the whole connection as q=CV

=>q=3.6×30

=>q=198mC.

Now, since capacitors are connected in series, so charge along both of the capacitors remains same.

Therefore, using C-V formula we find the voltage around 6mf capacitors

=>q=CV

=>198mC=6mF×V

=>V=33Volt.

Hence, if capacitors of values 6.0 mf and 9.0 mf are connected in series to a30.0 v power supply, then the resulting potential difference is 33Volt.

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(Complete question) is:

capacitors of values 6.0 mf and 9.0 mf are connected in series to a30.0 v power supply what is the resulting potential difference around 6.0mf capacitor?

Answer:

the universe include all galaxies in the universe

Answer:

The value of the charge is 6 c. Option c.

Explanation:

Electric Field

The electric field is defined as the force per unit charge that would experience a small positive test charge if held at some point in space.

The force F on a charge q at any point in space is equal to the product of the charge and the electric field E at that point .

\(F=q\cdot E\)

Since we know the value of the electric field E=6\ N/c and the force F=36 N experienced by a certain charge q, we can solve the above equation for q:

\(\displaystyle q=\frac{F}{E}\)

\(\displaystyle q=\frac{36\ N}{6\ N/c}\)

q=6 c

The value of the charge is 6 c. Option c.

The velocity of the canoe is  1.7 m/s.

Momentum in physics is the products of mass and velocity. Now we have to find momentum with the formula; p = mv

a) Initial momentum = (15)8 m/s + 135 = 255 Kgms-1

b) Since momentum is conserved, the total momentum after throwing the anchor is still 255 Kgms-1

c) The final velocity of the boat is obtained from;

255 Kgms-1 = (15Kg + 135 Kg) v

v = 255 Kgms-1/(15Kg + 135 Kg)

v = 1.7 m/s

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D) introduce a dielectric material between the plates, and E) decrease the separation between the plates will increase the capacitance of a parallel-plate capacitor.

The capacitance of a parallel-plate capacitor is given by the formula:

C = εA/d

where C is the capacitance, ε is the permittivity of free space, A is the area of the plates, and d is the distance between the plates.

From this formula, we can see that the capacitance is directly proportional to the area of the plates and the permittivity of free space, and inversely proportional to the distance between the plates. Therefore, the following changes will increase the capacitance of a parallel-plate capacitor:

D) Introduce a dielectric material between the plates: A dielectric material has a higher permittivity than air, which increases the capacitance of the capacitor.

E) Decrease the separation between the plates: A decrease in the distance between the plates increases the capacitance of the capacitor.

Therefore, the correct choices are D) introduce a dielectric material between the plates, and E) decrease the separation between the plates.

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The constant force that must be applied to the rope to bring the merry-go-round from rest to a speed of 1.20 rev/min in 30.0 s is 192 N.

The moment of inertia of a uniform disk is (1/2)MR^2, where M is the mass and R is the radius. The torque required to produce a given angular acceleration is equal to the moment of inertia times the angular acceleration. Using the final angular velocity and the time, we can calculate the angular acceleration. Knowing the torque, we can then calculate the force required. The force required to accelerate the disk is equal to the torque divided by the radius of the disk. Using the given values, we can solve for the force required, which is 192 N.

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Answer: ( 2nd ) ( 3 )

Explanation:

The work done in pulling the crate 1000 m at constant velocity is 300000 Joules.

Friction is a type of force that resists or prevents the relative motion of two physical objects when their surfaces come in contact.

The friction force prevents any two surfaces of objects from easily sliding over each other or slipping across one another. It depends upon the force applied to the object.

As given in the problem a 6000 N crate is pulled across an icy surface. the coefficient of kinetic friction is 0.05.

The frictional force responsible for the work don

Frictional force = μMg

                         =0.05× 6000

                         = 300 N

Work done = force  × displacement

                  = 300 ×1000

                  = 300000 Joules

Thus, the work done in pulling the crate 1000 m at constant velocity would be 300000 Joules.

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a) The static friction force f, which is horizontal and parallel to the wall. It acts in the opposite direction to the force the person would experience if they were sliding downward.

b) The minimum coefficient of static friction required is:

μ = tanθ = 0.2

c)  No, the answer in part b) does not depend on the mass of the passenger.

a) The force diagram for a person on this ride, after the floor has dropped, includes the following forces:

The normal force N, which is perpendicular to the wall and the floor. It is equal in magnitude and opposite in direction to the force the person exerts on the wall due to their weight.

The gravitational force mg, which is downward and parallel to the wall.

The static friction force f, which is horizontal and parallel to the wall. It acts in the opposite direction to the force the person would experience if they were sliding downward.

b) To determine the minimum coefficient of static friction required for the person on the ride not to slide downward, we can use the following inequality:

f ≤ μN

where μ is the coefficient of static friction. The force f is equal in magnitude to the force the person would experience if they were sliding downward, which is mg sinθ, where θ is the angle between the wall and the vertical direction. The normal force N is equal in magnitude to the force the person exerts on the wall due to their weight, which is mg cosθ. Therefore, we can rewrite the inequality as:

mg sinθ ≤ μmg cosθ

Simplifying and canceling out the mass m, we get:

tanθ ≤ μ

Substituting the given values, we get:

tanθ = Δh / r = 0.5 / 2.5 = 0.2

Therefore, the minimum coefficient of static friction required is:

μ = tanθ = 0.2

c) No, the answer in part b) does not depend on the mass of the passenger. The mass cancels out in the inequality we used, so the minimum coefficient of static friction required depends only on the angle between the wall and the vertical direction.

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A common unit for measuring energy is the calorie, defined as the amount of energy required to raise one gram of water from 14.5°C to 15.5°C. In food, energy is usually measured in kilocalories, which are often referred to as dietary Calories.

Thermodynamics is the study of energy transformations, which includes two types of energy: potential energy (stored energy) and kinetic energy (energy being used). Energy transformations are inefficient, meaning that organisms must take in and expend energy to live. The law of conservation of energy states that energy cannot be created or destroyed.

Energy transformations result in an increase in entropy, which leads to randomness and is measured as a disorder in a system. Entropy is often associated with inefficiencies in energy conversions. A common unit for measuring energy is the calorie, defined as the amount of energy required to raise one gram of water from 14.5°C to 15.5°C. In food, energy is usually measured in kilocalories, which are often referred to as dietary Calories.

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The measure of central tendency that should be used to calculate the cutoff time for the final race is the median.

Option C.

The median is the middle point in a dataset—half of the data points are smaller than the median and half of the data points are larger.

To find the median: Arrange the data points from smallest to largest. If the number of data points is odd, the median is the middle data point in the list.

So from the given data of the 100 meter dash, the measure of central tendency that should be used to calculate the cutoff time for the final race is the median.

The median will help to separate half of the data points that are smaller than the cutoff time and half of the data points are larger than the cutoff time.

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Given data

*The given mass of the car is m = 1475 kg

*The maximum tension is T = 2551 N

The formula for the maximum possible acceleration of the truck is given by Newton's second law as

Substitute the known values in the above expression as

Hence, the maximum possible acceleration of the truck is a_max = 1.72 m/s^2

Based on the information, the particle is negatively charged.

Magnetic fields exert forces on other moving charge. The force a magnetic field exerts on a charge q moving with velocity v is called the Lorentz force.

It is given by F = qv × B.

To find the direction of the force, use the right-hand rule. Let the fingers of your right hand point in the direction of v. Orient the palm of your hand, so that as you curl your fingers, you can sweep them over to point into the direction of B. Your thumb points in the direction of the vector product v × B. If q is positive then this is the direction of F. If q is negative, your thumb points opposite to the direction of F.

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Answer:

It maybe 1600

Explanation:

Because it's near to 1500 in the line.

Answer:

https://www.khanacademy.org/science/physics/geometric-optics/lenses/v/convex-lenses

Explanation:

Here is a link to a video to tell you about this.

Answer:

A magnetic field is a vector field that describes the magnetic influence on moving electric charges, electric currents, and magnetic materials. A moving charge in a magnetic field experiences a force perpendicular to its own velocity and to the magnetic field.

Explanation:

Answer:

Explanation:

A magnetic field is a vector field that describes the magnetic influence on moving electric charges, electric currents, and magnetic materials. ... Magnetic fields surround magnetized materials, and are created by electric currents such as those used in electromagnets, and by electric fields varying in time.